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Thru-Hulls & Seacocks

Results 201 - 300 of 534
Groco Fbv Bronze Full-Flow Tri-Flange Seacock - Fbv-750 - 34-Fbv750F1

Groco Fbv Bronze Full-Flow Tri-Flange Seacock - Fbv-750 - 34-Fbv750F1

Groco, Thru-Hulls & Seacocks
$113.79
Patented field reversible handle allows you to select the closed position orientation (Clockwise or Counterclockwise) that best suits the installation. Handle has square hole to accept standard ratche... More Details

Groco Fth Bronze Flush Thru-Hull With Nut - Fth-1000-W - 34-Fth1000Wf1

Groco Fth Bronze Flush Thru-Hull With Nut - Fth-1000-W - 34-Fth1000Wf1

Groco, Thru-Hulls & Seacocks
$56.22
Includes locknut. Bronze.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Fth Bronze Flush Thru-Hull With Nut - Fth-1500-W - 34-Fth1500Wf1

Groco Fth Bronze Flush Thru-Hull With Nut - Fth-1500-W - 34-Fth1500Wf1

Groco, Thru-Hulls & Seacocks
$124.33
Includes locknut. Bronze.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Fth Bronze Flush Thru-Hull With Nut - Fth-750-W - 34-Fth750Wf1

Groco Fth Bronze Flush Thru-Hull With Nut - Fth-750-W - 34-Fth750Wf1

Groco, Thru-Hulls & Seacocks
$38.59
Includes locknut. Bronze.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 1-1/2

Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 1-1/2" - Hsth-1500-W - 34-Hsth1500Wf1

Groco, Thru-Hulls & Seacocks
$127.79
Provides low pressure, low profile flow into plumbing system. Includes nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 1-1/4

Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 1-1/4" - Hsth-1250-W - 34-Hsth1250Wf1

Groco, Thru-Hulls & Seacocks
$87.89
Provides low pressure, low profile flow into plumbing system. Includes nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 1

Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 1" - Hsth-1000-W - 34-Hsth1000Wf1

Groco, Thru-Hulls & Seacocks
$49.69
Provides low pressure, low profile flow into plumbing system. Includes nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 2

Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 2" - Hsth-2000-W - 34-Hsth2000Wf1

Groco, Thru-Hulls & Seacocks
$144.59
Provides low pressure, low profile flow into plumbing system. Includes nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 3/4

Groco Hsth Bronze High Speed Standard Length Thru-Hull W/Nut 3/4" - Hsth-750-W - 34-Hsth750Wf1

Groco, Thru-Hulls & Seacocks
$31.19
Provides low pressure, low profile flow into plumbing system. Includes nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Hth Stainless Steel Hose Thru-Hull - Hth-1000-S - 34-Hth1000Sf1

Groco Hth Stainless Steel Hose Thru-Hull - Hth-1000-S - 34-Hth1000Sf1

Groco, Thru-Hulls & Seacocks
$58.19
Includes locknut. Stainless Steel.... More Details

Groco Hth Stainless Steel Hose Thru-Hull - Hth-1125-S - 34-Hth1125Sf1

Groco Hth Stainless Steel Hose Thru-Hull - Hth-1125-S - 34-Hth1125Sf1

Groco, Thru-Hulls & Seacocks
$59.59
Includes locknut. Stainless Steel.... More Details

Groco Hth Stainless Steel Hose Thru-Hull - Hth-1250-S - 34-Hth1250Sf1

Groco Hth Stainless Steel Hose Thru-Hull - Hth-1250-S - 34-Hth1250Sf1

Groco, Thru-Hulls & Seacocks
$97.89
Includes locknut. Stainless Steel.... More Details

Groco Hth Stainless Steel Hose Thru-Hull - Hth-1500-S - 34-Hth1500Sf1

Groco Hth Stainless Steel Hose Thru-Hull - Hth-1500-S - 34-Hth1500Sf1

Groco, Thru-Hulls & Seacocks
$119.09
Includes locknut. Stainless Steel.... More Details

Groco Hth Stainless Steel Hose Thru-Hull - Hth-2000-S - 34-Hth2000Sf1

Groco Hth Stainless Steel Hose Thru-Hull - Hth-2000-S - 34-Hth2000Sf1

Groco, Thru-Hulls & Seacocks
$147.49
Includes locknut. Stainless Steel.... More Details

Groco Hth Stainless Steel Hose Thru-Hull - Hth-500-S - 34-Hth500Sf1

Groco Hth Stainless Steel Hose Thru-Hull - Hth-500-S - 34-Hth500Sf1

Groco, Thru-Hulls & Seacocks
$55.29
Includes locknut. Stainless Steel.... More Details

Groco Hth Stainless Steel Hose Thru-Hull - Hth-625-S - 34-Hth625Sf1

Groco Hth Stainless Steel Hose Thru-Hull - Hth-625-S - 34-Hth625Sf1

Groco, Thru-Hulls & Seacocks
$48.19
Includes locknut. Stainless Steel.... More Details

Groco Hth Stainless Steel Hose Thru-Hull - Hth-750-S - 34-Hth750Sf1

Groco Hth Stainless Steel Hose Thru-Hull - Hth-750-S - 34-Hth750Sf1

Groco, Thru-Hulls & Seacocks
$48.19
Includes locknut. Stainless Steel.... More Details

Groco Hth1000 Bronze Hose Thru-Hull - Hth-1000 - 34-Hth1000F1

Groco Hth1000 Bronze Hose Thru-Hull - Hth-1000 - 34-Hth1000F1

Groco, Thru-Hulls & Seacocks
$63.83
Includes locknut.... More Details

Groco Hth1125 Bronze Thru-Hull - Hth-1125 - 34-Hth1125F1

Groco Hth1125 Bronze Thru-Hull - Hth-1125 - 34-Hth1125F1

Groco, Thru-Hulls & Seacocks
$71.13
Includes locknut.... More Details

Groco Hth1250 Bronze Hose Thru-Hull - Hth-1250 - 34-Hth1250F1

Groco Hth1250 Bronze Hose Thru-Hull - Hth-1250 - 34-Hth1250F1

Groco, Thru-Hulls & Seacocks
$84.17
Includes locknut.... More Details

Groco Hth1500 Bronze Hose Thru-Hull - Hth-1500 - 34-Hth1500F1

Groco Hth1500 Bronze Hose Thru-Hull - Hth-1500 - 34-Hth1500F1

Groco, Thru-Hulls & Seacocks
$101.49
Includes locknut.... More Details

Groco Hth2000 Bronze Thru-Hull - Hth-2000 - 34-Hth2000F1

Groco Hth2000 Bronze Thru-Hull - Hth-2000 - 34-Hth2000F1

Groco, Thru-Hulls & Seacocks
$132.09
Includes locknut.... More Details

Groco Hth500 Bronze Thru-Hull - Hth-500 - 34-Hth500F1

Groco Hth500 Bronze Thru-Hull - Hth-500 - 34-Hth500F1

Groco, Thru-Hulls & Seacocks
$30.45
Includes locknut.... More Details

Groco Hth625 Bronze Hose Thru-Hull - Hth-625 - 34-Hth625F1

Groco Hth625 Bronze Hose Thru-Hull - Hth-625 - 34-Hth625F1

Groco, Thru-Hulls & Seacocks
$37.59
Includes locknut.... More Details

Groco Hth750 Bronze Thru-Hull - Hth-750 - 34-Hth750F1

Groco Hth750 Bronze Thru-Hull - Hth-750 - 34-Hth750F1

Groco, Thru-Hulls & Seacocks
$46.41
Includes locknut.... More Details

Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-1000-S - 34-Hthc1000Sf1

Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-1000-S - 34-Hthc1000Sf1

Groco, Thru-Hulls & Seacocks
$96.49
Includes locknut.... More Details

Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-1250-S - 34-Hthc1250Sf1

Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-1250-S - 34-Hthc1250Sf1

Groco, Thru-Hulls & Seacocks
$153.29
Includes locknut.... More Details

Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-1500-S - 34-Hthc1500Sf1

Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-1500-S - 34-Hthc1500Sf1

Groco, Thru-Hulls & Seacocks
$270.79
Includes locknut.... More Details

Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-2000-S - 34-Hthc2000Sf1

Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-2000-S - 34-Hthc2000Sf1

Groco, Thru-Hulls & Seacocks
$249.59
Includes locknut.... More Details

Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-750-S - 34-Hthc750Sf1

Groco Hthc-S #316 Ss Hose Thru-Hull 90 Degree With Bronze Nut - Hthc-750-S - 34-Hthc750Sf1

Groco, Thru-Hulls & Seacocks
$78.19
Includes locknut.... More Details

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-1000 - 34-Ibvf1000F1

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-1000 - 34-Ibvf1000F1

Groco, Thru-Hulls & Seacocks
$97.63
Adapter eliminates dangerous thread mis-matches between thru-hulls and in-line valves and valve damage in OEM installations. Accepts a standard thru-hull fitting into the base and a standard in-line v... More Details

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-1250 - 34-Ibvf1250F1

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-1250 - 34-Ibvf1250F1

Groco, Thru-Hulls & Seacocks
$110.98
NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-1500 - 34-Ibvf1500F1

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-1500 - 34-Ibvf1500F1

Groco, Thru-Hulls & Seacocks
$143.53
Adapter eliminates dangerous thread mis-matches between thru-hulls and in-line valves and valve damage in OEM installations. Accepts a standard thru-hull fitting into the base and a standard in-line v... More Details

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-2000 - 34-Ibvf2000F1

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-2000 - 34-Ibvf2000F1

Groco, Thru-Hulls & Seacocks
$167.39
NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-2500 - 34-Ibvf2500F1

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-2500 - 34-Ibvf2500F1

Groco, Thru-Hulls & Seacocks
$303.49
Adapter eliminates dangerous thread mis-matches between thru-hulls and in-line valves and valve damage in OEM installations. Accepts a standard thru-hull fitting into the base and a standard in-line v... More Details

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-750 - 34-Ibvf750F1

Groco Ibv-F Bronze Flanged Adaptor For In-Line Ball Valve To Thru-Hull - Ibvf-750 - 34-Ibvf750F1

Groco, Thru-Hulls & Seacocks
$90.33
Adapter eliminates dangerous thread mis-matches between thru-hulls and in-line valves and valve damage in OEM installations. Accepts a standard thru-hull fitting into the base and a standard in-line v... More Details

Groco Rsc Bronze Round Hull Strainer With Access - Rsc-1000 - 34-Rsc1000F1

Groco Rsc Bronze Round Hull Strainer With Access - Rsc-1000 - 34-Rsc1000F1

Groco, Thru-Hulls & Seacocks
$115.19
Bronze. With mounting ring. Easy access to the thru-hull fitting and seacock beneath Groco hull strainer with patented access door design. No need to remove the entire strainer to clear nuisance marin... More Details

Groco Rsc Bronze Round Hull Strainer With Access - Rsc-2000 - 34-Rsc2000F1

Groco Rsc Bronze Round Hull Strainer With Access - Rsc-2000 - 34-Rsc2000F1

Groco, Thru-Hulls & Seacocks
$176.79
Bronze. With mounting ring. Easy access to the thru-hull fitting and seacock beneath Groco hull strainer with patented access door design. No need to remove the entire strainer to clear nuisance marin... More Details

Groco Sc Bronze Slotted Strainer Without Mount Ring - Sc-1000-L - 34-Sc1000Lf1

Groco Sc Bronze Slotted Strainer Without Mount Ring - Sc-1000-L - 34-Sc1000Lf1

Groco, Thru-Hulls & Seacocks
$52.09
Bronze. Uses 6 #10 fasteners.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sc Bronze Slotted Strainer Without Mount Ring - Sc-1500-L - 34-Sc1500Lf1

Groco Sc Bronze Slotted Strainer Without Mount Ring - Sc-1500-L - 34-Sc1500Lf1

Groco, Thru-Hulls & Seacocks
$89.19
Bronze. Uses 6 #10 fasteners.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sc Bronze Slotted Strainer Without Mount Ring - Sc-2500-L - 34-Sc2500Lf1

Groco Sc Bronze Slotted Strainer Without Mount Ring - Sc-2500-L - 34-Sc2500Lf1

Groco, Thru-Hulls & Seacocks
$161.79
Bronze. Uses 6 #10 fasteners.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sc1000 Bronze Slotted Strainer With Mount Ring - Sc-1000 - 34-Sc1000F1

Groco Sc1000 Bronze Slotted Strainer With Mount Ring - Sc-1000 - 34-Sc1000F1

Groco, Thru-Hulls & Seacocks
$88.66
Mount the ring permanently. Fasten the strainer to the ring and remove as often as needed. Uses 6 #10 fasteners.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sc1500 Bronze Slotted Strainer With Mount Ring - Sc-1500 - 34-Sc1500F1

Groco Sc1500 Bronze Slotted Strainer With Mount Ring - Sc-1500 - 34-Sc1500F1

Groco, Thru-Hulls & Seacocks
$188.69
Mount the ring permanently. Fasten the strainer to the ring and remove as often as needed. Uses 6 #10 fasteners.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sc1500Al Aluminum Slotted Strainer With Mount Ring - Sc1500Al - 34-Sc1500Alf1

Groco Sc1500Al Aluminum Slotted Strainer With Mount Ring - Sc1500Al - 34-Sc1500Alf1

Groco, Thru-Hulls & Seacocks
$243.89
Mount the ring permanently. Fasten the strainer to the ring and remove as often as needed. Uses 6 #10 fasteners.... More Details

Groco Sc2500 Bronze Slotted Strainer With Mount Ring - Sc-2500 - 34-Sc2500F1

Groco Sc2500 Bronze Slotted Strainer With Mount Ring - Sc-2500 - 34-Sc2500F1

Groco, Thru-Hulls & Seacocks
$235.74
Mount the ring permanently. Fasten the strainer to the ring and remove as often as needed. Uses 6 #10 fasteners.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Ssc Bronze Engine Flush Kit And Safety Seacock Conversion - Ssc-1250 - 34-Ssc1250F1

Groco Ssc Bronze Engine Flush Kit And Safety Seacock Conversion - Ssc-1250 - 34-Ssc1250F1

Groco, Thru-Hulls & Seacocks
$305.59
Allows instant emergency bilge pumping, or to simplify winterization and cooling system flushing. While the engine is running, close the seacock and remove the quick release plug. Includes service ada... More Details

Groco Ssc Bronze Engine Flush Kit And Safety Seacock Conversion - Ssc-2000 - 34-Ssc2000F1

Groco Ssc Bronze Engine Flush Kit And Safety Seacock Conversion - Ssc-2000 - 34-Ssc2000F1

Groco, Thru-Hulls & Seacocks
$408.29
Allows instant emergency bilge pumping, or to simplify winterization and cooling system flushing. While the engine is running, close the seacock and remove the quick release plug. Includes service ada... More Details

Groco Stainless Steel Thru-Hull Fitting, 1-1/2

Groco Stainless Steel Thru-Hull Fitting, 1-1/2" - Th-1500-Ws - 34-Th1500Wsf1

Groco, Thru-Hulls & Seacocks
$99.39
NPSM / NPT combination thread#316 Stainless SteelUL Listed 647B... More Details

Groco Stainless Steel Thru-Hull Fitting, 1-1/4

Groco Stainless Steel Thru-Hull Fitting, 1-1/4" - Th-1250-Ws - 34-Th1250Wsf1

Groco, Thru-Hulls & Seacocks
$94.99
NPSM / NPT combination thread#316 Stainless SteelUL Listed 647B... More Details

Groco Stainless Steel Thru-Hull Fitting, 1

Groco Stainless Steel Thru-Hull Fitting, 1" - Th-1000-Ws - 34-Th1000Wsf1

Groco, Thru-Hulls & Seacocks
$85.09
NPSM / NPT combination thread#316 Stainless SteelUL Listed 647B... More Details

Groco Stainless Steel Thru-Hull Fitting, 1/2

Groco Stainless Steel Thru-Hull Fitting, 1/2" - Th-500-Ws - 34-Th500Wsf1

Groco, Thru-Hulls & Seacocks
$31.29
NPSM / NPT combination thread#316 Stainless SteelUL Listed 647B... More Details

Groco Stainless Steel Thru-Hull Fitting, 3/4

Groco Stainless Steel Thru-Hull Fitting, 3/4" - Th-750-Ws - 34-Th750Wsf1

Groco, Thru-Hulls & Seacocks
$29.79
NPSM / NPT combination thread#316 Stainless SteelUL Listed 647B... More Details

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-1000-W - 34-Sth1000Wf1

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-1000-W - 34-Sth1000Wf1

Groco, Thru-Hulls & Seacocks
$88.76
Includes locking nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-1250-W - 34-Sth1250Wf1

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-1250-W - 34-Sth1250Wf1

Groco, Thru-Hulls & Seacocks
$127.26
Includes locking nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-1500-W - 34-Sth1500Wf1

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-1500-W - 34-Sth1500Wf1

Groco, Thru-Hulls & Seacocks
$141.96
Includes locking nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-2000-W - 34-Sth2000Wf1

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-2000-W - 34-Sth2000Wf1

Groco, Thru-Hulls & Seacocks
$245.45
Includes locking nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-2500-W - 34-Sth2500Wf1

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-2500-W - 34-Sth2500Wf1

Groco, Thru-Hulls & Seacocks
$357.19
Includes locking nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-500-W - 34-Sth500Wf1

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-500-W - 34-Sth500Wf1

Groco, Thru-Hulls & Seacocks
$51.83
Includes locking nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-750-W - 34-Sth750Wf1

Groco Sth Bronze Scoop Thru-Hull With Nut - Sth-750-W - 34-Sth750Wf1

Groco, Thru-Hulls & Seacocks
$65.08
Includes locking nut. NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-1000-W - 34-Th1000Wf1

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-1000-W - 34-Th1000Wf1

Groco, Thru-Hulls & Seacocks
$48.81
Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Inclu... More Details

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-1250-W - 34-Th1250Wf1

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-1250-W - 34-Th1250Wf1

Groco, Thru-Hulls & Seacocks
$81.36
Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Inclu... More Details

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-1500-W - 34-Th1500Wf1

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-1500-W - 34-Th1500Wf1

Groco, Thru-Hulls & Seacocks
$105.04
Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Inclu... More Details

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-2000-W - 34-Th2000Wf1

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-2000-W - 34-Th2000Wf1

Groco, Thru-Hulls & Seacocks
$158.34
Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Inclu... More Details

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-2500-W - 34-Th2500Wf1

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-2500-W - 34-Th2500Wf1

Groco, Thru-Hulls & Seacocks
$322.43
Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Inclu... More Details

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-3000-W - 34-Th3000Wf1

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-3000-W - 34-Th3000Wf1

Groco, Thru-Hulls & Seacocks
$462.95
Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Inclu... More Details

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-4000-W - 34-Th4000Wf1

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-4000-W - 34-Th4000Wf1

Groco, Thru-Hulls & Seacocks
$1,662.79
Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Inclu... More Details

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-500-W - 34-Th500Wf1

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-500-W - 34-Th500Wf1

Groco, Thru-Hulls & Seacocks
$31.08
Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Inclu... More Details

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-750-W - 34-Th750Wf1

Groco Th Bronze Standard Length Thru-Hull With Nut, Nps Thread - Th-750-W - 34-Th750Wf1

Groco, Thru-Hulls & Seacocks
$34.10
Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Inclu... More Details

warning

Groco Th2000Ws Stainless Steel Thru-Hull Fitting, 2" - Th-2000-Ws - 34-Th2000Wsf1

Groco, Thru-Hulls & Seacocks
$136.30
More Details

Groco Tht530 Thru Hull Installation Tool , Sizes 1/2

Groco Tht530 Thru Hull Installation Tool , Sizes 1/2" Through 3" - Tht-530 - 34-Tht530F1

Groco, Thru-Hulls & Seacocks
$304.59
Enables Installations GROCO thru-hull fittings by a single installer. Slide the thru-hull fitting, flanged end first, over the tool. (It will stop at the proper step.) Tie a length of monofilament to ... More Details

Groco Thxl Bronze Extra-Length Thru-Hull With Nut, Nps Thread - Thxl-1000-W - 34-Thxl1000Wf1

Groco Thxl Bronze Extra-Length Thru-Hull With Nut, Nps Thread - Thxl-1000-W - 34-Thxl1000Wf1

Groco, Thru-Hulls & Seacocks
$76.98
Extra long through hull for installations where hull thickness dictates the use of longer fitting. Locknut included.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Thxl Bronze Extra-Length Thru-Hull With Nut, Nps Thread - Thxl-1250-W - 34-Thxl1250Wf1

Groco Thxl Bronze Extra-Length Thru-Hull With Nut, Nps Thread - Thxl-1250-W - 34-Thxl1250Wf1

Groco, Thru-Hulls & Seacocks
$124.23
Extra long through hull for installations where hull thickness dictates the use of longer fitting. Locknut included.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Thxl Bronze Extra-Length Thru-Hull With Nut, Nps Thread - Thxl-1500-W - 34-Thxl1500Wf1

Groco Thxl Bronze Extra-Length Thru-Hull With Nut, Nps Thread - Thxl-1500-W - 34-Thxl1500Wf1

Groco, Thru-Hulls & Seacocks
$133.10
Extra long through hull for installations where hull thickness dictates the use of longer fitting. Locknut included.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Thxl Bronze Extra-Length Thru-Hull With Nut, Nps Thread - Thxl-2000-W - 34-Thxl2000Wf1

Groco Thxl Bronze Extra-Length Thru-Hull With Nut, Nps Thread - Thxl-2000-W - 34-Thxl2000Wf1

Groco, Thru-Hulls & Seacocks
$175.79
Extra long through hull for installations where hull thickness dictates the use of longer fitting. Locknut included.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Thxl Bronze Extra-Length Thru-Hull With Nut, Nps Thread - Thxl-750-W - 34-Thxl750Wf1

Groco Thxl Bronze Extra-Length Thru-Hull With Nut, Nps Thread - Thxl-750-W - 34-Thxl750Wf1

Groco, Thru-Hulls & Seacocks
$60.70
Extra long through hull for installations where hull thickness dictates the use of longer fitting. Locknut included.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Groco Thxl1000Ws Stainless Steel Extra Long Thru-Hull Fittings, 1

Groco Thxl1000Ws Stainless Steel Extra Long Thru-Hull Fittings, 1" - Thxl-1000-Ws - 34-Thxl1000Wsf1

Groco, Thru-Hulls & Seacocks
$90.79
Extra long NPSM / NPT combination thread#316 Stainless Steel... More Details

Groco Thxl1250Ws Stainless Steel Extra Long Thru-Hull Fittings, 1-1/4

Groco Thxl1250Ws Stainless Steel Extra Long Thru-Hull Fittings, 1-1/4" - Thxl-1250-Ws - 34-Thxl1250Wsf1

Groco, Thru-Hulls & Seacocks
$110.79
Extra long NPSM / NPT combination thread#316 Stainless Steel... More Details

Groco Thxl1500Ws Stainless Steel Extra Long Thru-Hull Fittings, 1-1/2

Groco Thxl1500Ws Stainless Steel Extra Long Thru-Hull Fittings, 1-1/2" - Thxl-1500-Ws - 34-Thxl1500Wsf1

Groco, Thru-Hulls & Seacocks
$112.19
Extra long NPSM / NPT combination thread#316 Stainless Steel... More Details

Groco Thxl2000Ws Stainless Steel Extra Long Thru-Hull Fittings, 2

Groco Thxl2000Ws Stainless Steel Extra Long Thru-Hull Fittings, 2" - Thxl-2000-Ws - 34-Thxl2000Wsf1

Groco, Thru-Hulls & Seacocks
$121.99
Extra long NPSM / NPT combination thread#316 Stainless Steel... More Details

Groco Thxl750Ws Stainless Steel Extra Long Thru-Hull Fittings, 3/4

Groco Thxl750Ws Stainless Steel Extra Long Thru-Hull Fittings, 3/4" - Thxl-750-Ws - 34-Thxl750Wsf1

Groco, Thru-Hulls & Seacocks
$83.79
Extra long NPSM / NPT combination thread#316 Stainless Steel... More Details

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I50 Speed Pk W/Retrc Thru-Hull - T70583 - 152-T70583F1

Raymarine, Thru-Hulls & Seacocks
$914.29
More Details

warning

I50 Tridata W/Thru-Hull Trans - T70582 - 152-T70582F1

Raymarine, Thru-Hulls & Seacocks
$1,371.49
More Details

In-Line Strainer, 1/2

In-Line Strainer, 1/2" Hose - 36400-0000 - 6-364000000F1

Jabsco, Thru-Hulls & Seacocks
$64.39
Prevents dirt and other particles from entering pump intake. Cuts down on repairs. Transparent housing for quick inspection, 50 mesh stainless steel filtering screen.... More Details

Jabsco 462000000 Pumpguard Coarse Mesh In Line Strainer, 3/4

Jabsco 462000000 Pumpguard Coarse Mesh In Line Strainer, 3/4" Hose Barb In/Out, Straight - 46200-0000 - 6-462000000F1

Jabsco, Thru-Hulls & Seacocks
$66.79
This compact pre filter prevents particles jamming valves and causing pump breakdowns - we've given it a screw off, transparent housing for easy inspection and quick, in place cleaning.... More Details

Jabsco 464000002 Pumpguard Fine Mesh In Line Strainer, 1/2

Jabsco 464000002 Pumpguard Fine Mesh In Line Strainer, 1/2" Hose Barb In/Out, Straight - 46400-0002 - 6-464000002F1

Jabsco, Thru-Hulls & Seacocks
$61.59
This compact pre filter prevents particles jamming valves and causing pump breakdowns - we've given it a screw off, transparent housing for easy inspection and quick, in place cleaning.... More Details

Jabsco 464000711 Strainer Only For 6 Gpm - 46400-0711 - 6-464000711F1

Jabsco 464000711 Strainer Only For 6 Gpm - 46400-0711 - 6-464000711F1

Jabsco, Thru-Hulls & Seacocks
$75.59
Strainer Only for 6 GPM... More Details

Jabsco Pumpgard In-Line Strainer - 36200-1000 - 6-362001000F1

Jabsco Pumpgard In-Line Strainer - 36200-1000 - 6-362001000F1

Jabsco, Thru-Hulls & Seacocks
$61.79
Prevents dirt and other particles from entering pump intake. Cuts down on repairs. Transparent housing for quick inspection, 50 mesh stainless steel filtering screen.... More Details

Jabsco Pumpgard In-Line Strainer - 36400-1000 - 6-364001000F1

Jabsco Pumpgard In-Line Strainer - 36400-1000 - 6-364001000F1

Jabsco, Thru-Hulls & Seacocks
$64.39
Prevents dirt and other particles from entering pump intake. Cuts down on repairs. Transparent housing for quick inspection, 50 mesh stainless steel filtering screen.... More Details

Johnson Pump 092465202Cn Pumprotector™ Inline Inlet Strainer - 09-24652-02-Cn - 189-092465202Cnf1

Johnson Pump 092465202Cn Pumprotector™ Inline Inlet Strainer - 09-24652-02-Cn - 189-092465202Cnf1

Johnson Pump/Mayfair, Thru-Hulls & Seacocks
$50.29
Strainer features a transparent cover for simple inspection, a wide variety of KlickTite™ port connectors for simple installation and removal, and high quality materials for simple maintenance. The co... More Details

Johnson Pump 092465302Cn Pumprotector™ Inlet Strainer - 09-24653-02-Cn - 189-092465302Cnf1

Johnson Pump 092465302Cn Pumprotector™ Inlet Strainer - 09-24653-02-Cn - 189-092465302Cnf1

Johnson Pump/Mayfair, Thru-Hulls & Seacocks
$66.39
Strainer features a transparent cover for simple inspection, a wide variety of KlickTite™ port connectors for simple installation and removal, and high quality materials for simple maintenance. The co... More Details

Johnson Pump 54033Pk Thru-Hull Nut - 54033Pk - 189-54033Pkf1

Johnson Pump 54033Pk Thru-Hull Nut - 54033Pk - 189-54033Pkf1

Johnson Pump/Mayfair, Thru-Hulls & Seacocks
$17.89
Replacement Thru-Hull Nut... More Details

Johnson Pump 54234Pk Straight Aerator Thru-Hull Assembly - 54234Pk - 189-54234Pkf1

Johnson Pump 54234Pk Straight Aerator Thru-Hull Assembly - 54234Pk - 189-54234Pkf1

Johnson Pump/Mayfair, Thru-Hulls & Seacocks
$23.99
Replacement Straight Aerator Thru-hull... More Details

Johnson Pump 54236Pk 90° Aerator Thru-Hull Assembly - 54236Pk - 189-54236Pkf1

Johnson Pump 54236Pk 90° Aerator Thru-Hull Assembly - 54236Pk - 189-54236Pkf1

Johnson Pump/Mayfair, Thru-Hulls & Seacocks
$28.49
Replacement 90° Aerator Thru-hull Assembly... More Details

Johnson Pump 75035 3/4

Johnson Pump 75035 3/4" 90° White Thru-Hull - 75035-00 - 189-7503500F1

Johnson Pump/Mayfair, Thru-Hulls & Seacocks
$27.79
Fittings are molded of tough acetal resin so they will not rust, corrode, discolor nor are they susceptible to electrolysis. White. Skin pack.... More Details

Johnson Pump 90191 Aerator Head - Overall Length 13-3/4

Johnson Pump 90191 Aerator Head - Overall Length 13-3/4" Thru-Hull, One Shut Off Valve - 90191-00 - 189-9019100F1

Johnson Pump/Mayfair, Thru-Hulls & Seacocks
$59.49
Johnson Pump 90191 Aerator Head - Overall Length 13-3/4" Thru-Hull, One Shut Off Valve.... More Details

Johnson Pump 90331 Aerator Head - Overall Length 12-3/4

Johnson Pump 90331 Aerator Head - Overall Length 12-3/4", 3/4" Thru-Hull, One Shut Off Valve - 90331 - 189-90331F1

Johnson Pump/Mayfair, Thru-Hulls & Seacocks
$75.49
Johnson Pump 90331 Aerator Head - Overall Length 12-3/4", 3/4" Thru-Hull, One Shut Off Valve.... More Details

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Lowrance 00014887001 9-Pin Shoot-Thru Hull Pod Med/High Chirp With Remote Temp - 000-14887-001 - 149-00014887001F1

Lowrance, Thru-Hulls & Seacocks
$169.19
Pod Type Transducer... More Details

No image found Marine Hardware Bronze Tri-Angle Seacock, 1-1/2

Marine Hardware Bronze Tri-Angle Seacock, 1-1/2" Pipe - Seac1.500-B - 369-Seac1500Bf1

Marine Hardware Inc (Canada Only), Thru-Hulls & Seacocks
$651.89
Same precision specifications as Marine Hardware ball valves. Triangular flange machined smooth for flush-fit hull mounting. Includes ground screw, mounting boss and drain. Cathodic protection require... More Details

No image found Marine Hardware Bronze Tri-Angle Seacock, 1-1/4

Marine Hardware Bronze Tri-Angle Seacock, 1-1/4" Pipe - Seac1.250-B - 369-Seac1250Bf1

Marine Hardware Inc (Canada Only), Thru-Hulls & Seacocks
$378.19
Same precision specifications as Marine Hardware ball valves. Triangular flange machined smooth for flush-fit hull mounting. Includes ground screw, mounting boss and drain. Cathodic protection require... More Details

No image found Marine Hardware Bronze Tri-Angle Seacock, 1

Marine Hardware Bronze Tri-Angle Seacock, 1" Pipe - Seac1.000-B - 369-Seac1000Bf1

Marine Hardware Inc (Canada Only), Thru-Hulls & Seacocks
$339.89
Same precision specifications as Marine Hardware ball valves. Triangular flange machined smooth for flush-fit hull mounting. Includes ground screw, mounting boss and drain. Cathodic protection require... More Details

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Northern Marine Canada
Our products are shipped from Canada!
Parts Warehouse:
Toronto, Ontario, Canada
Head Office:
Kingston, Ontario

About Us

Northern Marine is a Canadian supplier of premium marine and RV parts and accessories from top industry brands. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.

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