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Premium Marine Quality Parts

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Seadog 337425 Hose Thru Vent, 4" Black - 337425 - 354-337425F1

Sea-Dog Line, Hoses, Clamps & Fittings
$9.49

Hose Thru Vents are designed for cabin or bilge ventilation. Constructed of UV resistant injection molded ABS. For use with 3" or 4" exhaust hose. Installs with four #8 FH fasteners (not included). Avoid contact with acetone or strong solvents.

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Seadog 3400201 Deck Drain 4-3/16" Black Abs - 340020-1 - 354-3400201F1

Sea-Dog Line, Lines & Rigging
$11.10

Deck Drains are constructed of injection molded ABS. Designed to drain water from floors of bass, pontoon, and other open deck boats. May also be used to vent lockers, refrigerator cabinets, or as a grille for enclosed horns and speakers. Avoid contact with acetone or strong solvents.

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Seadog 3400211 Deck Drain 4-3/16" White Abs - 340021-1 - 354-3400211F1

Sea-Dog Line, Lines & Rigging
$11.25

Deck Drains are constructed of injection molded ABS. Designed to drain water from floors of bass, pontoon, and other open deck boats. May also be used to vent lockers, refrigerator cabinets, or as a grille for enclosed horns and speakers. Avoid contact with acetone or strong solvents.

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Seadog 3400401 Deck Drain 5-5/8" Black Abs - 340040-1 - 354-3400401F1

Sea-Dog Line, Lines & Rigging
$10.89

Deck Drains are constructed of injection molded ABS. Designed to drain water from floors of bass, pontoon, and other open deck boats. May also be used to vent lockers, refrigerator cabinets, or as a grille for enclosed horns and speakers. Avoid contact with acetone or strong solvents.

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Seadog 340041 Deck Drain 5-5/8" White Abs - 340041 - 354-340041F1

Sea-Dog Line, Lines & Rigging
$7.18

Deck Drains are constructed of injection molded ABS. Designed to drain water from floors of bass, pontoon, and other open deck boats. May also be used to vent lockers, refrigerator cabinets, or as a grille for enclosed horns and speakers. Avoid contact with acetone or strong solvents.

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Seadog 351300 Hose Deck Fill Body Without Cap, 1-1/2" Hose Diameter - 351300-1 - 354-3513001F1

Sea-Dog Line, Hoses, Clamps & Fittings
$68.49

316 stainless steel body with black plastic cap. Cap threads are 1-1/4" to 11-1/2 NPSM straight. Use #10 fasteners.

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Seadog 3513201 Gas Deck Fill For 1-1/2" Hose - 351320-1 - 354-3513201F1

Sea-Dog Line, Hoses, Clamps & Fittings
$99.59

Constructed of corrosion resistant cast 316 stainless steel. Slotted cap requires a key to open and close. All fills and replacement caps (except waste) include attachment chain. Installs with three #10 FH fasteners (not included). USCG regulations require bonding wire to prevent sparking. 1-1/2" hose versions feature 1-1/4" © 11-1/2 NPSM straight cap threads.

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Seadog 351320L Locking Gas Hose Deck Fill W/Keys, 1-1/2" Hose - 351320L-1 - 354-351320L1F1

Sea-Dog Line, Hoses, Clamps & Fittings
$173.99

Locking Hose Deck Fills is constructed of corrosion resistant investment cast 316 stainless steel for long term durability. Locking feature prevents fuel theft. Cap spins freely when in the locked position. To unlock the cap, turn key until key hole is inline with the cap tabs (shown in photo). Color-coded with international symbols for easy deck fill identification. 1-1/2" © 11-1/2 NPSM straight cap threads. Includes two keys and cap attachment cable. Installs with three #10 FH fasteners (not included). USCG regulations require bonding wire to prevent sparking.

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Seadog 351321 Diesel Deck Fill For 1-1/2" Hose - 351321-1 - 354-3513211F1

Sea-Dog Line, Hoses, Clamps & Fittings
$99.59

Constructed of corrosion resistant cast 316 stainless steel. Slotted cap requires a key to open and close. All fills and replacement caps (except waste) include attachment chain. Installs with three #10 FH fasteners (not included). USCG regulations require bonding wire to prevent sparking. 1-1/2" hose versions feature 1-1/4" © 11-1/2 NPSM straight cap threads.

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Seadog 351321L1 Locking Diesel Hose Deck Fill W/Keys, 1-1/2" Hose - 351321L-1 - 354-351321L1F1

Sea-Dog Line, Hoses, Clamps & Fittings
$173.99

Locking Hose Deck Fills is constructed of corrosion resistant investment cast 316 stainless steel for long term durability. Locking feature prevents fuel theft. Cap spins freely when in the locked position. To unlock the cap, turn key until key hole is inline with the cap tabs (shown in photo). Color-coded with international symbols for easy deck fill identification. 1-1/2" © 11-1/2 NPSM straight cap threads. Includes two keys and cap attachment cable. Installs with three #10 FH fasteners (not included). USCG regulations require bonding wire to prevent sparking.

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Seadog 3513231 Waste Deck Fill For 1-1/2" Hose - 351323-1 - 354-3513231F1

Sea-Dog Line, Sewer & Drain
$92.79

Constructed of corrosion resistant cast 316 stainless steel. Slotted cap requires a key to open and close. All fills and replacement caps (except waste) include attachment chain. Installs with three #10 FH fasteners (not included). USCG regulations require bonding wire to prevent sparking. 1-1/2" hose versions feature 1-1/4" - 11-1/2 NPSM straight cap threads.

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Seadog 351330 Gas Deck Fill A:2" Hose, B:3-1/4", C:3-7/16", #10 Fh, Gas - 351330 - 354-351330F1

Sea-Dog Line, Hoses, Clamps & Fittings
$95.99

Constructed of corrosion resistant cast 316 stainless steel. Slotted cap requires a key to open and close. All fills and replacement caps (except waste) include attachment chain. Installs with three #10 FH fasteners (not included). USCG regulations require bonding wire to prevent sparking. 2" hose versions are 1-1/2" - 11-1/2 NPSM straight cap threads.

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Seadog 351331 Diesel Deck Fill For 2" Hose - 351331 - 354-351331F1

Sea-Dog Line, Hoses, Clamps & Fittings
$95.99

Constructed of corrosion resistant cast 316 stainless steel. Slotted cap requires a key to open and close. All fills and replacement caps (except waste) include attachment chain. Installs with three #10 FH fasteners (not included). USCG regulations require bonding wire to prevent sparking. 2" hose versions are 1-1/2" - 11-1/2 NPSM straight cap threads.

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Seadog 351331L Locking Diesel Hose Deck Fill W/Keys, 2" Hose - 351331L - 354-351331Lf1

Sea-Dog Line, Hoses, Clamps & Fittings
$171.59

Locking Hose Deck Fills is constructed of corrosion resistant investment cast 316 stainless steel for long term durability. Locking feature prevents fuel theft. Cap spins freely when in the locked position. To unlock the cap, turn key until key hole is inline with the cap tabs (shown in photo). Color-coded with international symbols for easy deck fill identification. 1-1/2" © 11-1/2 NPSM straight cap threads. Includes two keys and cap attachment cable. Installs with three #10 FH fasteners (not included). USCG regulations require bonding wire to prevent sparking.

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Seadog 351391 Angled Hose Deck Fill Replacement Cap - 351391-1 - 354-3513911F1

Sea-Dog Line, Lighting
$46.39

Investment cast 316 stainless angled hose deck fill replacement cap. Cap threads are 1-1/2" to 12 NPSM straight.

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Seadog 3520301 90° Gas Tank Vent, Fits 5/8" Hose, Brass - 352030-1 - 354-3520301F1

Sea-Dog Line, Hoses, Clamps & Fittings
$34.89

Compensates for changes in tank level due to consumption, as well as temperature related expansion and contraction. Designed to prevent vacuum build-up during use, which can disrupt fuel delivery. Also doubles as a pressure release valve for the gas tank. Two screens provide a barrier to keep unwanted contaminants from entering the tank. An integral 5/8" hose barb securely connects vent hose at a 90° angle.

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Seadog 3522301 90° Gas Tank Vent, Fits 5/8" Hose, Stainless - 352230-1 - 354-3522301F1

Sea-Dog Line, Hoses, Clamps & Fittings
$48.99

Compensates for changes in tank level due to consumption, as well as temperature related expansion and contraction. Designed to prevent vacuum build-up during use, which can disrupt fuel delivery. Also doubles as a pressure release valve for the gas tank. Investment cast 316 stainless steel construction. Two screens provide a barrier to keep unwanted contaminants from entering the tank. An integral 5/8" hose barb securely connects vent hose at a 90° angle.

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Seadog 3532301 90° Gas Tank Vent, Fits 5/8" Hose, Stainless - 353230-1 - 354-3532301F1

Sea-Dog Line, Hoses, Clamps & Fittings
$66.69

This Flush Mount 90° Gas Tank Vent provides the needed air flow to maintain proper fuel flow while filling and during use. Vents compensate for changes in tank level due to consumption, as well as temperature related expansion and contraction. Designed to prevent vacuum build-up during use, which can disrupt fuel delivery they also double as a pressure release valve for the gas tank. Helps prevent fuel spills, blow-back, and ensures fumes vent outboard instead of inside the boat. An integral 5/8" hose barb securely connects vent hose at a 90° angle. Constructed of corrosion resistant investment cast 316 stainless steel.

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Seadog 3570001 Black Nylon Fill Body W/O Cap - 357000-1 - 354-3570001F1

Sea-Dog Line, Lines & Rigging
$14.99

Constructed of fiberglass filled injection molded nylon. Contains no metal and does not require grounding. Has a special cap with a built-in key for easy cap removal. The hinged key can be locked in the upright position to open or close the fill and then recessed into the cap for a flush surface. 1-1/4" © 11-1/2 NPSM straight cap threads. Installs with three #10 FH fasteners (not included). Will not work with pressurized oil injection systems. Connect deck fill to reservoir via hose (not included).

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Seadog 3570301 Gas Deckfill W/Keyless Cap - 357030-1 - 354-3570301F1

Sea-Dog Line, Lines & Rigging
$25.39

Constructed of fiberglass filled injection molded nylon. Contains no metal and does not require grounding. Has a special cap with a built-in key for easy cap removal. The hinged key can be locked in the upright position to open or close the fill and then recessed into the cap for a flush surface. 1-1/4" © 11-1/2 NPSM straight cap threads. Installs with three #10 FH fasteners (not included). Will not work with pressurized oil injection systems. Connect deck fill to reservoir via hose (not included).

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Seadog 3570311 Deck Fill - Diesel - 357031-1 - 354-3570311F1

Sea-Dog Line, Lines & Rigging
$25.39

Constructed of fiberglass filled injection molded nylon. Contains no metal and does not require grounding. Has a special cap with a built-in key for easy cap removal. The hinged key can be locked in the upright position to open or close the fill and then recessed into the cap for a flush surface. 1-1/4" © 11-1/2 NPSM straight cap threads. Installs with three #10 FH fasteners (not included). Will not work with pressurized oil injection systems. Connect deck fill to reservoir via hose (not included).

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Seadog 357033 Keyless Deck Fill-Water - 357033 - 354-357033F1

Sea-Dog Line, Lines & Rigging
$21.59

Constructed of fiberglass filled injection molded nylon. Contains no metal and does not require grounding. Has a special cap with a built-in key for easy cap removal. The hinged key can be locked in the upright position to open or close the fill and then recessed into the cap for a flush surface. 1-1/4" © 11-1/2 NPSM straight cap threads. Installs with three #10 FH fasteners (not included). Will not work with pressurized oil injection systems. Connect deck fill to reservoir via hose (not included).

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Seadog 3570331 Deck Fill -Water - 357033-1 - 354-3570331F1

Sea-Dog Line, Lines & Rigging
$25.39

Constructed of fiberglass filled injection molded nylon. Contains no metal and does not require grounding. Has a special cap with a built-in key for easy cap removal. The hinged key can be locked in the upright position to open or close the fill and then recessed into the cap for a flush surface. 1-1/4" © 11-1/2 NPSM straight cap threads. Installs with three #10 FH fasteners (not included). Will not work with pressurized oil injection systems. Connect deck fill to reservoir via hose (not included).

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Seadog 3570341 Keyless Deck Fill-Waste - 357034-1 - 354-3570341F1

Sea-Dog Line, Sewer & Drain
$25.39

Constructed of fiberglass filled injection molded nylon. Contains no metal and does not require grounding. Has a special cap with a built-in key for easy cap removal. The hinged key can be locked in the upright position to open or close the fill and then recessed into the cap for a flush surface. 1-1/4" - 11-1/2 NPSM straight cap threads. Installs with three #10 FH fasteners (not included). Will not work with pressurized oil injection systems. Connect deck fill to reservoir via hose (not included).

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Seadog 371840 Flush Mount Ski Tow | 3/8" Thread Diameter | Investment Cast 316 Stainless - 371840 - 354-371840F1

Sea-Dog Line, Lines & Rigging
$82.89

Flush mount ski tow designed to give your transom an updated look. Stud centers will allow direct replacement of the most popular standard ski tow. Includes backing plate.

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.