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Premium Marine Quality Parts

Results 251 - 275 of 338
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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 backing block into the holes that match the seacock flange1/2" thickness is rigid enough for a secure installation but flexible enough to conform to minor hull curvatureWill not swell or absorb moistureMade from an environmentally friendly PVC foam specially formulated for marine applications

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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 backing block into the holes that match the seacock flange1/2" thickness is rigid enough for a secure installation but flexible enough to conform to minor hull curvatureWill not swell or absorb moistureMade from an environmentally friendly PVC foam specially formulated for marine applications

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Groco Asc2000 Bronze Slotted Hull Strainer With Access - Asc-2000 - 34-Asc2000F1

Groco, Thru-Hulls & Seacocks
$369.99

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 #10 fasteners. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Asc1250 Bronze Slotted Hull Strainer With Access - Asc-1250 - 34-Asc1250F1

Groco, Thru-Hulls & Seacocks
$274.09

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 #10 fasteners. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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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 levels are on at 2-3/4" of bilge level and off at 1". Use with a pump that draws up to 10-amps running continuously or up to 20 amps running intermittently. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg753 Sight Glass With Drain Plug For Arg Strainer - Arg-753 - 34-Arg753F1

Groco, Thru-Hulls & Seacocks
$112.99

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

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Groco Arg750S Bronze Strainer With #304 Ss Basket - Arg-750-S - 34-Arg750Sf1

Groco, Thru-Hulls & Seacocks
$461.79

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 strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg503 Sight Glass With Drain Plug For Arg Strainer - Arg-503 - 34-Arg503F1

Groco, Thru-Hulls & Seacocks
$97.19

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

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Groco Arg500S Bronze Strainer With #304 Ss Basket - Arg500S - 34-Arg500Sf1

Groco, Thru-Hulls & Seacocks
$448.79

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 strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg3000S Bronze Strainer With #304 Ss Basket - Arg-3000-S - 34-Arg3000Sf1

Groco, Thru-Hulls & Seacocks
$1,375.39

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 strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg2500S Bronze Strainer With #304 Ss Basket - Arg-2500-S - 34-Arg2500Sf1

Groco, Thru-Hulls & Seacocks
$1,284.69

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 strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg2000S Bronze Strainer With #304 Ss Basket - Arg-2000-S - 34-Arg2000Sf1

Groco, Thru-Hulls & Seacocks
$1,103.29

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 strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg1503 Sight Glass With Drain Plug For Arg Strainer - Arg-1503 - 34-Arg1503F1

Groco, Thru-Hulls & Seacocks
$231.69

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

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Groco Arg1500S Bronze Strainer With #304 Ss Basket - Arg-1500-S - 34-Arg1500Sf1

Groco, Thru-Hulls & Seacocks
$1,041.69

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 strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg1253 Sight Glass With Drain Plug For Arg Strainer - Arg-1253 - 34-Arg1253F1

Groco, Thru-Hulls & Seacocks
$160.29

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

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Groco Arg1250S Bronze Strainer With #304 Ss Basket - Arg1250S - 34-Arg1250Sf1

Groco, Thru-Hulls & Seacocks
$688.89

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 strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg1003 Sight Glass With Drain Plug For Arg Strainer - Arg-1003 - 34-Arg1003F1

Groco, Thru-Hulls & Seacocks
$142.99

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

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Groco Arg1000S Bronze Strainer With #304 Ss Basket - Arg-1000-S - 34-Arg1000Sf1

Groco, Thru-Hulls & Seacocks
$647.49

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 strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Arg-506 Drain Wingnut And O-Ring For Arg Strainers Before 080101 - Arg-506 - 34-Arg506F1

Groco, Seals, Gaskets & Service Kits
$8.23

Drain Wingnut with O-Ring, Pre- 8/01

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Groco Arg-2 Strainer Service Kit For Arg-1000, Arg-1210 And Arg-1250 - Arg-2 - 34-Arg2F1

Groco, Miscellaneous
$38.79

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

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Groco Arg-1 Strainer Service Kit For Arg-500, Arg-750 And Arg-755 - Arg-1 - 34-Arg1F1

Groco, Miscellaneous
$37.39

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

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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.

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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.

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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.

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Groco Arg Bronze Strainer With Plastic Basket - Arg-755-P - 34-Arg755Pf1

Groco, Thru-Hulls & Seacocks
$424.79

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 strainer cap and between strainer head and sight glass. See-thru screw-on strainer cap allows easy, no-tools maintenance. Spanner wrench holes in cover allow the use of SW-2531 wrench. Install with pipe or hose. Do not use chemical or abrasive cleaners on sight glass. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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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.