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Premium Marine Quality Parts

Results 301 - 338 of 338
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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. Includes nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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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 the eye and place it into the already-cut hole in the hull of the boat. Apply caulking to the flange of the fitting, and pull the fitting through the hole and against the hull from inside the boat. Thread the mono-filament through the locknut or seacock. With the fitting pulled firmly against the hull the locknut or the seacock may be screwed onto the fitting.

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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.

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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.

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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.

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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.

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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.

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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

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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

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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

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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

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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

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Groco Tp1500 Bronze Tail Piece, Nps Thread - Tp-1500 - 34-Tp1500F1

Groco, Miscellaneous
$90.19

TP tail pieces are threaded with NPS (straight) female pipe thread, and are for use with GROCO SV series seacocks or with any product with straight male pipe thread.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Tp750 Bronze Tail Piece, Nps Thread - Tp-750 - 34-Tp750F1

Groco, Miscellaneous
$79.99

TP tail pieces are threaded with NPS (straight) female pipe thread, and are for use with GROCO SV series seacocks or with any product with straight male pipe thread.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Tpc1000 Bronze Tail Piece 90°, Nps Thread - Tpc-1000 - 34-Tpc1000F1

Groco, Miscellaneous
$86.39

TPC series tail pieces are threaded with NPS (straight) female pipe thread, and are for use with GROCO SV series seacocks or with any product with straight male pipe thread. TPS series 90° tail pieces are comprised of two pieces. The swivel may be rotated in any direction to facilitate hook-up; then the nut is tightened.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Tpc1250 Bronze Tail Piece 90°, Nps Thread - Tpc-1250 - 34-Tpc1250F1

Groco, Miscellaneous
$101.49

TPC series tail pieces are threaded with NPS (straight) female pipe thread, and are for use with GROCO SV series seacocks or with any product with straight male pipe thread. TPS series 90° tail pieces are comprised of two pieces. The swivel may be rotated in any direction to facilitate hook-up; then the nut is tightened.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Tpc1500 Bronze Tail Piece 90°, Nps Thread - Tpc-1500 - 34-Tpc1500F1

Groco, Miscellaneous
$126.19

TPC series tail pieces are threaded with NPS (straight) female pipe thread, and are for use with GROCO SV series seacocks or with any product with straight male pipe thread. TPS series 90° tail pieces are comprised of two pieces. The swivel may be rotated in any direction to facilitate hook-up; then the nut is tightened.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Tpc750 Bronze Tail Piece 90°, Nps Thread - Tpc-750 - 34-Tpc750F1

Groco, Miscellaneous
$82.29

TPC series tail pieces are threaded with NPS (straight) female pipe thread, and are for use with GROCO SV series seacocks or with any product with straight male pipe thread. TPS series 90° tail pieces are comprised of two pieces. The swivel may be rotated in any direction to facilitate hook-up; then the nut is tightened.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Ts-350-T 4-Way Tank Selector Kit - Ts-350-T - 34-Ts350Tf1

Groco, Miscellaneous
$365.79

TS-350-T Tank Selector Kit utilizes FV-450-X full flow valve mounted on a stainless steel mount bracket and plumbed with (2) 1/2" straight brass hose barbs and (1) 7/16" 90-degree brass hose barb. Two labels are provided to match installation (port/starboard tanks or fore/aft tanks). Handle can be relocated in 90-degree increments to align plumbing. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Twv Bronze 3-Way Full Flow Valve - Twv-1500 - 34-Twv1500F1

Groco, Hoses, Clamps & Fittings
$378.29

Handle points to the direction of flow and rotates a full 180 degrees. Center position is "off". Mount foot included, full flow. Stainless steel handle & hardware. PTFE seats and seals. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Twv Bronze 3-Way Full Flow Valve - Twv-500 - 34-Twv500F1

Groco, Hoses, Clamps & Fittings
$74.37

Handle points to the direction of flow and rotates a full 180 degrees. Center position is "off". Mount foot included, full flow. Stainless steel handle & hardware. PTFE seats and seals. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Twv Bronze 3-Way Full Flow Valve - Twv-750 - 34-Twv750F1

Groco, Hoses, Clamps & Fittings
$93.04

Handle points to the direction of flow and rotates a full 180 degrees. Center position is "off". Mount foot included, full flow. Stainless steel handle & hardware. PTFE seats and seals. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco U-Lube3 Ulube Grease, 3 Oz. - Ulube-3 - 34-Ulube3F1

Groco, Filters, Oils & Lubricants
$43.99

Ball valves (in-line valve or flanged seacocks) that are "exercised" frequently operate more easily and are likely to remain free of marine growth. The task of regularly opening and closing valves, however, is often neglected because valves are difficult to reach, or because owners just don't feel like it. Consequently, valves are left in one position for months or even seasons, and when the time comes to open or close the valve, the build-up of barnacles and calcium makes it extremely difficult or impossible.

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Groco Wsa1001 Stainless Basket - Wsa1001 - 34-Wsa1001F1

Groco, Miscellaneous
$54.44

Stainless Basket

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Groco Wsb1000P Salt-Water Pump Strainer With Non-Metallic Basket - Wsb-1000-P - 34-Wsb1000Pf1

Groco, Cooling & Water Pump
$139.89

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting bracket included.

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Groco Wsb1000P Salt-Water Pump Strainer With Stainless Steel Basket - Wsb-1000 - 34-Wsb1000F1

Groco, Cooling & Water Pump
$135.89

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting bracket included.

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Groco Wsb1250P Salt-Water Pump Strainer With Stainless Steel Basket - Wsb1250 - 34-Wsb1250F1

Groco, Cooling & Water Pump
$141.59

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting bracket included.

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Groco Wsb500 Salt-Water Pump Strainer With Stainless Steel Basket - Wsb-500 - 34-Wsb500F1

Groco, Cooling & Water Pump
$82.99

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting bracket included.

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Groco Wsb500P Salt-Water Pump Strainer With Non-Metallic Basket - Wsb-500-P - 34-Wsb500Pf1

Groco, Cooling & Water Pump
$90.09

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting bracket included.

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Groco Wsb750 Fresh-Water Pump Strainer With Stainless Steel Basket 3/4" - Wsb-750 - 34-Wsb750F1

Groco, Cooling & Water Pump
$87.29

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting bracket included.

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Groco Wsb750P Salt-Water Pump Strainer With Non-Metallic Basket - Wsb-750-P - 34-Wsb750Pf1

Groco, Cooling & Water Pump
$90.59

Protect fresh water pumps from debris. White nylon strainer head and clear plastic sight glass. Glass unscrews for filter basket cleaning. Mounting bracket included.

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Pipe-To-Hose Adapter, 90° - Pthc-112Pd40 - 34-Pthc112Pd40F1

Groco, Hoses, Clamps & Fittings
$72.39

Bronze, 90°, standard flow. ISO 9093-1 CERTIFIED. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Pipe-To-Hose Adapter, 90° - Pthc-114Pd32 - 34-Pthc114Pd32F1

Groco, Hoses, Clamps & Fittings
$50.99

Bronze, 90°, standard flow. ISO 9093-1 CERTIFIED. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Pipe-To-Hose Adapter, 90° - Pthc-1Pd25 - 34-Pthc1Pd25F1

Groco, Hoses, Clamps & Fittings
$29.89

Bronze, 90°, standard flow. ISO 9093-1 CERTIFIED. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Pipe-To-Hose Adapter, 90° - Pthc-2Pd50 - 34-Pthc2Pd50F1

Groco, Hoses, Clamps & Fittings
$124.79

Bronze, 90°, standard flow. ISO 9093-1 CERTIFIED. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Service Kit 1.5"-3" Arg - Arg-3 - 34-Arg3F1

Groco, Miscellaneous
$40.29
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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.