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Premium Marine Quality Parts

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Groco 2157 Buna-N O-Ring - 2-157 - 34-2157F1

Groco, Seals, Gaskets & Service Kits
$4.19
Replacement Buna-N O-Ring for ARG Strainers.... More Details

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Groco 2238 Cap O-Ring, For Arg-1500/3000 - 2-238 - 34-2238F1

Groco, Seals, Gaskets & Service Kits
$4.37
Cap O-Ring... More Details

Six-port fuel valves are used where 2 tanks supply a single engine, and a return to each supply tank is required. ABYC H33.9.2 states that fuel system valves must have an independent means of support.... More Details

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Groco 8Rset Replacement Sight Glass Gasket Set - #8R Set - 34-8Rsetf1

Groco, Seals, Gaskets & Service Kits
$27.39
Replacement sight glass gasket set... More Details

30-second cleaning cycle is automatically performed at user-selected intervalsOptional interface with SSA system ( initiates cleaning cycle when flow is reduced, independent of the pre-set cleaning in... More Details

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Groco 9Rset Replacement Sight Glass Gasket Set - #9R Set - 34-9Rsetf1

Groco, Seals, Gaskets & Service Kits
$24.69
Replacement sight glass gasket set... More Details

The patented door provides access to the thru-hull fitting and seacock inlet beneath APHS hull strainers. There is no need to remove the entire strainer to clear nuisance marine growth. C84400 Bronze ... More Details

The patented door provides access to the thru-hull fitting and seacock inlet beneath APHS hull strainers. There is no need to remove the entire strainer to clear nuisance marine growth. C84400 Bronze ... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

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Groco Arg Strainer Cap, 1-1/2" - Arg-1501-Pc - 34-Arg1501Pcf1

Groco, Thru-Hulls & Seacocks
$67.39
PC non-meatallic strainer cap.... More Details

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Groco Arg Strainer Cap, 1" - Arg-1001-Pc - 34-Arg1001Pcf1

Groco, Thru-Hulls & Seacocks
$58.69
PC non-meatallic strainer cap.... More Details

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Groco Arg Strainer Cap, 1/2" - Arg-501-Pc - 34-Arg501Pcf1

Groco, Thru-Hulls & Seacocks
$40.29
PC non-meatallic strainer cap.... More Details

Service kits for ARG strainers. Contain cap O-Ring, sight glass O-Ring, washer and drain wingnut gasket.... More Details

Service kits for ARG strainers. Contain cap O-Ring, sight glass O-Ring, washer and drain wingnut gasket.... More Details

Drain Wingnut with O-Ring, Pre- 8/01... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

For the ARG series strainers. Maximum psi is 50. Maximum temperature is 225° F. Sight glass includes drain wingnut.... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

For the ARG series strainers. Maximum psi is 50. Maximum temperature is 225° F. Sight glass includes drain wingnut.... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

For the ARG series strainers. Maximum psi is 50. Maximum temperature is 225° F. Sight glass includes drain wingnut.... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

For the ARG series strainers. Maximum psi is 50. Maximum temperature is 225° F. Sight glass includes drain wingnut.... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

For the ARG series strainers. Maximum psi is 50. Maximum temperature is 225° F. Sight glass includes drain wingnut.... More Details

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Groco As-100 Bilge Pump Switch - As-100 - 34-As100F1

Groco, Bilge Pumps & Blowers
$223.49
AS-100 uses the simple and reliable pressure fluctuation from a rising or falling bilge water level to turn your bilge pump on and off automatically. No floats to stick or fill with water. Approximate... More Details

Access to the thru-hull fitting and seacock beneath the hull strainer is made easy with the patented access door design. No need to remove the entire strainer to clear debris or marine growth. Uses #1... More Details

Access to the thru-hull fitting and seacock beneath the hull strainer is made easy with the patented access door design. No need to remove the entire strainer to clear debris or marine growth. Uses #1... More Details

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Groco Bb Backing Block For Flanged Seacock - Bb-1 - 34-Bb1F1

Groco, Thru-Hulls & Seacocks
$100.09
Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull. Each size fits multiple seacock sizesPress threaded inserts into the hull side of the ba... More Details

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Groco Bb Backing Block For Flanged Seacock - Bb-2 - 34-Bb2F1

Groco, Thru-Hulls & Seacocks
$127.39
Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull. Each size fits multiple seacock sizesPress threaded inserts into the hull side of the ba... More Details

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Groco Bb Backing Block For Flanged Seacock - Bb-3 - 34-Bb3F1

Groco, Thru-Hulls & Seacocks
$148.69
Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull. Each size fits multiple seacock sizesPress threaded inserts into the hull side of the ba... More Details

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Groco Bm11 Monel Filter Basket - Bm-11 - 34-Bm11F1

Groco, Filters, Oils & Lubricants
$559.29
Spare Basket... More Details

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Groco Bm2 Monel Filter Basket - Bm-2 - 34-Bm2F1

Groco, Filters, Oils & Lubricants
$232.99
Spare Basket... More Details

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Groco Bm3 Monel Filter Basket - Bm-3 - 34-Bm3F1

Groco, Filters, Oils & Lubricants
$283.69
Spare Basket... More Details

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Groco Bm5 Monel Filter Basket - Bm-5 - 34-Bm5F1

Groco, Filters, Oils & Lubricants
$361.69
Spare Basket... More Details

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacin... More Details

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacin... More Details

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacin... More Details

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacin... More Details

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacin... More Details

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacin... More Details

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacin... More Details

Features patented field-selectable and changeable direction of rotation-permits installation in otherwise unusable locations. Tri-flange base and mount hole pattern provide easy retrofit when replacin... More Details

For most air conditioning, refrigeration, generator and small main engine raw water supply. Combines raw water strainer with full flow seacock to simplify installation and maintenance. Features bronze... More Details

For most air conditioning, refrigeration, generator and small main engine raw water supply. Combines raw water strainer with full flow seacock to simplify installation and maintenance. Features bronze... More Details

For most air conditioning, refrigeration, generator and small main engine raw water supply. Combines raw water strainer with full flow seacock to simplify installation and maintenance. Features bronze... More Details

For most air conditioning, refrigeration, generator and small main engine raw water supply. Combines raw water strainer with full flow seacock to simplify installation and maintenance. Features bronze... More Details

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Groco Bvs2 Seacock/Strainer Combo - Bvs-2 - 34-Bvs2F1

Groco, Thru-Hulls & Seacocks
$48.09
Service Repair kit contains sight glass gaskets, cap o-ring, and valve driver seals... More Details

Completely assembled and water tested salt water washdown system provides pressurized water on demand. For deck, anchor wash, or both. Features permanent magnet ball bearing motor, SPO-60-N vane pump,... More Details

Ideal for baitwell or any onboard pumping job that needs high flow and low pressure. Includes garden hose adapter. Motor is ignition protected. Includes an adapter for garden hose conection.NOT TO BE ... More Details

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Groco Cv Bronze In-Line Check Valve - Cv-100 - 34-Cv100F1

Groco, Hoses, Clamps & Fittings
$67.29
In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump per... More Details

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Groco Cv Bronze In-Line Check Valve - Cv-125 - 34-Cv125F1

Groco, Hoses, Clamps & Fittings
$125.99
In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump per... More Details

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Groco Cv Bronze In-Line Check Valve - Cv-150 - 34-Cv150F1

Groco, Hoses, Clamps & Fittings
$191.79
In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump per... More Details

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Groco Cv Bronze In-Line Check Valve - Cv-200 - 34-Cv200F1

Groco, Hoses, Clamps & Fittings
$285.19
In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump per... More Details

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Groco Cv Bronze In-Line Check Valve - Cv-50 - 34-Cv50F1

Groco, Hoses, Clamps & Fittings
$42.49
In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump per... More Details

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Groco Cv Bronze In-Line Check Valve - Cv-75 - 34-Cv75F1

Groco, Hoses, Clamps & Fittings
$50.69
In-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in pressure systems. Unique design reduces flow turbulence and restriction, and improves pump per... More Details

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

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

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

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

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

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

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

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrest... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrest... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrest... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrest... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrest... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrest... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrest... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrest... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FF fittings are designed to accommodate the designed full pipe size flow and to provide an unrest... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unres... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unres... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unres... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unres... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unres... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unres... More Details

Used for connecting hose to valve, seacocks, strainers or any hardware having female NPT pipe threads. FFC fittings are designed to accommodate the designed full pipe size flow and to provide an unres... More Details

Includes locknut. Bronze.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Includes locknut. Bronze.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Includes locknut. Bronze.NOT TO BE USED IN POTABLE WATER SYSTEMS.... More Details

Fuel system valves must have an independent means of support. These full-flow valves meet all requirements and feature a SS handle and hardware, PTFE seats and seals and is UL Listed for fuel applicat... More Details

Fuel system valves must have an independent means of support. These full-flow valves meet all requirements and feature a SS handle and hardware, PTFE seats and seals and is UL Listed for fuel applicat... More Details

Fuel system valves must have an independent means of support. These full-flow valves meet all requirements and feature a SS handle and hardware, PTFE seats and seals and is UL Listed for fuel applicat... 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.