U.S. Customers: Orders shipped from Canada may be subject to U.S. import duties, taxes, and/or tariffs as assessed by U.S. Customs and your carrier. These charges are not included in our product prices or shipping rates. You are responsible for any duties/tariffs/fees due on delivery or prior to delivery.
Packed and shipped within Canada!

Premium Marine Quality Parts

Results 176 - 200 of 338
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Groco Hth Stainless Steel Hose Thru-Hull - Hth-1000-S - 34-Hth1000Sf1

Groco, Thru-Hulls & Seacocks
$58.19

Includes locknut. Stainless Steel.

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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.

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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.

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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.

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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.

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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.

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Groco Hf Regular Toilet Service Kit - Hf Regular - 34-Hfkitf1

Groco, Toilets & Toilet Parts
$184.99

Repair Kit Regular For HF

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Groco Hf Master Toilet Service Kit - Hf Master - 34-Hfmasterf1

Groco, Toilets & Toilet Parts
$281.69

Toilet Repair Kit

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Groco Hf Hand Operated Toilet With Bronze Base - White - Hf-B - 34-Hfbf1

Groco, Miscellaneous
$1,304.39

Improved valve system requiring less water per flush which makes it ideal for boats using holding tanks and easier pumping and no recirculation. Long stroke piston type pump for smooth, dependable operation. 90° discharge. Adapts to Groco ZD system or any other supplemental treatment or retention system. Installs above or below waterline.

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Groco Gpb Gear Pump 12V - Gpbr-1 12V - 34-Gpbr1F1

Groco, Miscellaneous
$1,132.99

Reversible models can operate in either direction. Relatively low flow (less than vane pumps) makes them suitable for duties such as deck-wash, fuel transfer, ballast transfer, and oil change. Ignition protected motor and 316 stainless steel shaft.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Gpb Gear Pump 12V - Gpb-1 12V - 34-Gpb1F1

Groco, Miscellaneous
$772.69

Reversible models can operate in either direction. Relatively low flow (less than vane pumps) makes them suitable for duties such as deck-wash, fuel transfer, ballast transfer, and oil change. Ignition protected motor and 316 stainless steel shaft.NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Gf-376 Fuel Filter Element Without O-Ring For Gf-375 - Gf-376 - 34-Gf376F1

Groco, Filters, Oils & Lubricants
$108.39

Separate dirt and water from fuel. 2-5 micron filtration. Use with gasoline or diesel fuel. Marine UL listed. Pressure tested bronze castings. Piping not disturbed when changing element. Maximum flow is 3-1/2 GPM with a maximum pressure of 75 psi.

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Groco G3 12V Oil Change System - G-3A 12V - 34-G312Vf1

Groco, Miscellaneous
$1,682.39

At the heart of the U-Lube system is a powerful gear pump. All models have dry-run protection, touchpad control, a plumbing schematic to tell you what hose goes where, and a handy maintenance log.

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Groco Fv475X Bronze 4 Port Tank Selector Valve 3/4" Full Flow - Fv-475-X - 34-Fv475Xf1

Groco, Hoses, Clamps & Fittings
$252.99

For fuel or waterFull 3/4" flowAudible "click" at each handle positionFor thru panel mounting

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Groco Fv-590 Stainless 90° Fuel Valve 1/2" - Fv-590-S - 34-Fv590Sf1

Groco, Fuel System
$67.19

Compact design90° flow pathUse for fiberflass tanksNOT TO BE USED IN POTABLE WATER SYSTEMS

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Groco Fv-590 Bronze 90° Fuel Valve 1/2" - Fv-590 - 34-Fv590F1

Groco, Fuel System
$41.19

Compact design90° flow pathUse for fiberflass tanksNOT TO BE USED IN POTABLE WATER SYSTEMS

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Groco Fv-550L Bronze 5-Way Tank Selector Valve 1/2" Full Flow - Fv-550-L - 34-Fv550Lf1

Groco, Hoses, Clamps & Fittings
$234.29

For fuel or waterBottom port is common. Select between four outlets.Full 1/2" flowAudible "click" at each handle positionFor thru-panel mountingC83600 bronze constructionNOT TO BE USED IN POTABLE WATER SYSTEMS

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Groco Fv-450-X Bronze 4-Way Tank Selector Valve 1/2" Full Flow - Fv-450-X - 34-Fv450Xf1

Groco, Hoses, Clamps & Fittings
$186.39

For fuel or waterFour Positions: Tank-1, Tank-2, Tanks 1 & 2, OffFull 1/2" flowAudible "click" at each handle positionFor thru panel mountingNOT TO BE USED IN POTABLE WATER SYSTEMS

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Groco Fv-410-X Bronze 4-Way Tank Selector Valve 1" Full Flow - Fv-410-X - 34-Fv410Xf1

Groco, Hoses, Clamps & Fittings
$560.19

For fuel or waterFour Positions: Tank-1, Tank-2, Tanks 1 & 2, OffFull 1" flowAudible "click" at each handle positionFor thru panel mountingNOT TO BE USED IN POTABLE WATER SYSTEMS

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Groco Fv Bronze Fuel Valve - Fv-750 - 34-Fv750F1

Groco, Fuel System
$68.59

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 applications. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fv Bronze Fuel Valve - Fv-500 - 34-Fv500F1

Groco, Fuel System
$56.29

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 applications. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fv Bronze Fuel Valve - Fv-375 - 34-Fv375F1

Groco, Fuel System
$35.69

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 applications. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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Groco Fv Bronze Fuel Valve - Fv-250 - 34-Fv250F1

Groco, Fuel System
$37.23

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 applications. NOT TO BE USED IN POTABLE WATER SYSTEMS.

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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.

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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.

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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.