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.
Canadian Based. Customer Focused.

Premium Marine Quality Parts

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GROCO 4" Bronze Flanged Seacock

GROCO
$6,741.50

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GROCO 1-1/2" 90 Degree Hose Thru-Hull Fitting

Thru-Hull Fittings, GROCO
$273.83

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GROCO 1-1/2" Ball Valve/Seacock & Raw Water Strainer Combo

Strainers & Baskets, GROCO
$2,635.44

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GROCO 1-1/2" Bronze Combo Scoop Thru-Hull w/Nut

Thru-Hull Fittings, GROCO
$133.44


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GROCO 1-1/2" Bronze Extra Long Thru-Hull Fitting w/Nut

Thru-Hull Fittings, GROCO
$132.05


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GROCO 1-1/2" Bronze High Speed Thru-Hull Fitting w/Nut

Thru-Hull Fittings, GROCO
$132.05

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GROCO 1-1/2" Bronze In-Line Check Valve

Fittings, GROCO
$205.72


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GROCO 1-1/2" Bronze Pipe Nipple Check Valve

Fittings, GROCO
$75.06


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GROCO 1-1/2" Engine Flush Kit & Adaptor

Flush Kits, GROCO
$364.18


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GROCO 1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut

Thru-Hull Fittings, GROCO
$98.69


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GROCO 1-1/2" NPT Bronze 3-Way Valve

Fittings, GROCO
$407.27

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GROCO 1-1/2" NPT Bronze In-Line Ball Valve

Fittings, GROCO
$200.16


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GROCO 1-1/2" Safety Seacock w/1-1/4" Side Port

Fittings, GROCO
$1,420.58

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GROCO 1-1/2" Slotted Hi Speed Thru-Hull w/Nut

Thru-Hull Fittings, GROCO
$182.09


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GROCO 1-1/4" 90 Degree Hose Thru-Hull Fitting

Thru-Hull Fittings, GROCO
$152.90

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GROCO 1-1/4" Ball Valve/Seacock & Raw Water Strainer Combo

Strainers & Baskets, GROCO
$2,146.16

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GROCO 1-1/4" Bronze Combo Scoop Thru-Hull w/Nut

Thru-Hull Fittings, GROCO
$119.54


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GROCO 1-1/4" Bronze Extra Long Thru-Hull Fitting w/Nut

Thru-Hull Fittings, GROCO
$123.71


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GROCO 1-1/4" Bronze High Speed Thru-Hull Fitting w/Nut

Thru-Hull Fittings, GROCO
$91.74

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GROCO 1-1/4" Bronze In-Line Check Valve

Fittings, GROCO
$134.83


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GROCO 1-1/4" Bronze Pipe Nipple Check Valve

Fittings, GROCO
$65.33


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GROCO 1-1/4" Engine Flush Kit & Adaptor

Flush Kits, GROCO
$321.09

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GROCO 1-1/4" Fresh Water Strainer w/#304 SS Basket

Strainers & Baskets, GROCO
$139.00

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GROCO 1-1/4" Fresh Water Strainer w/Plastic Basket

Strainers & Baskets, GROCO
$145.95




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GROCO 1-1/4" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut

Thru-Hull Fittings, GROCO
$76.45


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GROCO 1-1/4" NPT Bronze In-Line Ball Valve

Fittings, GROCO
$150.12


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GROCO 1-1/4" Safety Seacock w/1" Side Port

Fittings, GROCO
$1,232.93

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GROCO 1-1/4" Slotted Hi Speed Thru-Hull w/Nut

Thru-Hull Fittings, GROCO
$144.56


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GROCO 1" 90 Degree Hose Thru-Hull Fitting

Thru-Hull Fittings, GROCO
$95.91

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GROCO 1" Ball Valve/Seacock & Raw Water Strainer Combo

Strainers & Baskets, GROCO
$1,706.92

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GROCO 1" Bronze Combo Scoop Thru-Hull w/Nut

Thru-Hull Fittings, GROCO
$83.40


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GROCO 1" Bronze Extra Long Thru-Hull Fitting w/Nut

Thru-Hull Fittings, GROCO
$76.45

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GROCO 1" Bronze Flanged Full Flow Seacock

Fittings, GROCO
$606.04

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GROCO 1" Bronze High Speed Thru-Hull Fitting w/Nut

Thru-Hull Fittings, GROCO
$51.43

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GROCO 1" Bronze In-Line Check Valve

Fittings, GROCO
$72.28

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GROCO 1" Bronze NPS to NPT Flange Adapter

Fittings, GROCO
$95.91

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GROCO 1" Bronze Pipe Nipple Check Valve

Fittings, GROCO
$45.87


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GROCO 1" Engine Flush Kit & Adaptor

Flush Kits, GROCO
$279.39

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GROCO 1" Fresh Water Strainer w/#304 SS Basket

Strainers & Baskets, GROCO
$133.44

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GROCO 1" Fresh Water Strainer w/Plastic Basket

Strainers & Baskets, GROCO
$141.78

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GROCO 1" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut

Thru-Hull Fittings, GROCO
$45.87



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GROCO 1" NPT Bronze In-Line Ball Valve

Fittings, GROCO
$102.86


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GROCO 1" Slotted Hi Speed Thru-Hull w/Nut

Thru-Hull Fittings, GROCO
$84.79


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GROCO 1/2" 4-Port Tank Selector Valve

Fittings, GROCO
$191.82

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GROCO 1/2" 4-Way Tank Selector Kit

Fittings, GROCO
$391.98

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GROCO 1/2" 5-Port Tank Selector Valve

Fittings, GROCO
$250.20

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GROCO 1/2" Bronze Combo Scoop Thru-Hull w/Nut

Thru-Hull Fittings, GROCO
$48.65

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GROCO 1/2" Bronze In-Line Check Valve

Fittings, GROCO
$45.87

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GROCO 1/2" Bronze Pipe Nipple Check Valve

Fittings, GROCO
$23.63

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GROCO 1/2" Fresh Water Strainer w/#304 SS Basket

Strainers & Baskets, GROCO
$82.01

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GROCO 1/2" Fresh Water Strainer w/Plastic Basket

Strainers & Baskets, GROCO
$87.57

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Northern Marine Canada
Proudly Canadian Owned & Operated!
Serving customers across Canada & the USA with marine parts and accessories.
Canadian Head Office:
Kingston, Ontario, Canada
Warehouse Locations:
Toronto, Ontario, Canada
New Jersey, USA
Florida, USA

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.