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Premium Marine Quality Parts

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Seadog 3361571 Smooth Finish Quarter-Turn Deck Plate, Black,, A: 5-1/2" , B:6-3/4", C:5-3/8", D:6-1/8" - 336157-1 - 354-3361571F1

Sea-Dog Line, Lines & Rigging
$19.09

Sea-Dog's Quarter-Turn Deck Plate is UV stabilized and features a locking system that prevents over tightening, jamming and cross threading. Easy to open and close. A specially engineered lubricated gasket is used in conjunction with a knife edge for a leak tested seal. Injection molded ABS/polycarbonate. Note: Avoid contact with acetone or strong solvents.

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Seadog 3361651 Smooth Finish Quarter-Turn Deck Plate, Black,A:6-1/2" , B:8-1/8", C:6-1/2", D:7-3/8" - 336165-1 - 354-3361651F1

Sea-Dog Line, Lines & Rigging
$31.69

Sea-Dog's Quarter-Turn Deck Plate is UV stabilized and features a locking system that prevents over tightening, jamming and cross threading. Easy to open and close. A specially engineered lubricated gasket is used in conjunction with a knife edge for a leak tested seal. Injection molded ABS/polycarbonate. Note: 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 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 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.

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Seadog 413054B-1 Premium Wiper Arm For Standard Motors, Black - 413054B-1 - 354-413054B1F1

Sea-Dog Line, Lines & Rigging
$66.19

Formed 304 stainless steel. Premium stainless steel wiper arm for use on standard motors (412321B-3, 412328B-3) and waterproof standard wiper motors (412321W-3, 412328W-3) with 3/8" shaft diameter.

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Seadog 414900-3 Complete Windshield Washer 12V Kit | #10 Fastener - 414900-3 - 354-4149003F1

Sea-Dog Line, Lines & Rigging
$138.49

Comes complete with everything needed for a new installation. Includes tank with pump, wiring harness for the pump motor connection, toggle switch, 15' of clear tubing, hose barb tee, two spray nozzles and mounting bracket with fasteners. Tank capacity is 2.5 liters/2.66 quarts. Fastener #10 RH.

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Seadog 4216451 Dual Volt/Amp Meter - Rocker Switch Style - 421645-1 - 354-4216451F1

Sea-Dog Line, Lines & Rigging
$54.60

This rocker switch style dual volt/amp meter monitors and displays the voltage and amps simultaneously. Fits into any 13/16" X 1-7/16" rocker switch hole. Digital red LED display. Input 6-30VDC. IP65 rating.

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Seadog 4260131 Chrome Power Socket - 426013-1 - 354-4260131F1

Sea-Dog Line, Lines & Rigging
$14.94

Power Socket with Plate is ideal for installing additional power outlets. Chrome socket with a stamped 304 stainless steel mounting plate. Maximum: 12VDC, 16A. Installs with two #8 RH fasteners (not included).

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Seadog 4261061 Power Socket Rear Boot - 426106-1 - 354-4261061F1

Sea-Dog Line, Lines & Rigging
$6.04

PVC cover fits all power sockets and power socket meters. Protects wire connections and provides a finished appearance.

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Seadog 4261421 Chrome Brass Polarized Cable Outlet & Plug - 426142-1 - 354-4261421F1

Sea-Dog Line, Lines & Rigging
$27.28

Polarized Electrical Outlet is constructed of chrome plated cast brass. For use as a 2-conductor deck cable outlet. Includes a rubber gasket and water resistant cap. 3A. 12 or 24VDC. Installs with two #6 RH fasteners (not included).

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Seadog 426262 Polarized 3 Amp 2 Pin Electrical Outlet | #6 Fastener | Cast Brass & Chrome Plated - 426262-1 - 354-4262621F1

Sea-Dog Line, Lines & Rigging
$34.29

Constructed of chrome plated brass. For use as a 2-conductor deck cable outlet. Includes a rubber gasket and water resistant cap. 3-5A. Installs with two #6 RH fasteners (not included).

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Seadog 4265131 Double Usb Power Plug W/Voltage & Amp Meter - 426513-1 - 354-4265131F1

Sea-Dog Line, Lines & Rigging
$60.99

Double USB Power Plug charges two devices simultaneously while the LCD screen displays charging status in amps, battery voltage, and low voltage audible alarm. The total output 4.8A load is split 2.4A per side as needed. Enough power to charge phones, pads, and tablets quickly and efficiently. Can be used on a boat, car, or RV. This portable version fits all Sea-Dog® Power Sockets and any standard 12V receptacle. Constructed of stamped stainless steel and injection molded nylon. Output DC 5V/4.8A. Input 12-24VDC. Blue LED display.

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Seadog 4265151 Double Usb 12V - 24V Input Power Socket - 426515-1 - 354-4265151F1

Sea-Dog Line, Lines & Rigging
$36.89

Dual USB Power Socket charges two devices simultaneously. The total output 4.8A load is split 2.4A per side as needed. Enough power to charge phones, pads, and tablets quickly and efficiently. Protective dust cap extends the life of the charger. Also fits Sea-Dog® Power Socket Shell (426100). Constructed of injection molded nylon. Output DC 5V/4.8A. Input 12-24VDC. Blue LED illumination. IP65 rating.

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Seadog 4265191 Rainbow Volt Meter W/Usb 3.0 & Usb-C Power Socket - 426519-1 - 354-4265191F1

Sea-Dog Line, Lines & Rigging
$65.99

Rainbow Volt Meter with USB 3.0 & USB-C Power Socket charges two devices simultaneously while the rainbow dial displays voltage status. The total output 6A load is split 3A per side as needed. USB 3.0 features Quick Charging (QC) for supported devices, giving enough power to charge phones, pads, and tablets quickly and efficiently. USB-C features Power Delivery (PD) for fast and flexible charging. Protective dust cap extends the life of the charger. The rainbow display gives the user quick, visual, color-coded voltage information. (Red/orange: voltage is too low. Green: normal). Reads voltage up to 14.6 volts. Includes On/Off button to conserve battery power when not needed. Constructed of injection molded nylon. Installation is as easy as drilling a 1-1/8" hole, inserting the socket body, tightening the locking nut, and connecting the wires. Also fits Sea-Dog® Power Socket Shell (426100). Output DC: 5V/6A. Input: 8-32 VDC. IP65 rating. RoHS compliant.

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Seadog 426520 Double Usb 12V To 24V Input Rocker Switch Power Socket - 426520-1 - 354-4265201F1

Sea-Dog Line, Lines & Rigging
$38.09

Dual USB Rocker Switch Style Power Socket charges two devices simultaneously. Fits into any 13/16" x 1-7/16" rocker switch hole. The total output 4.8A load is split 2.4A per side as needed. Enough power to charge phones, pads, and tablets quickly and efficiently. Protective dust cap extends the life of the charger. Constructed of injection molded nylon. Output DC 5V/4.8A. Input 12-24VDC. Blue LED illumination. IP65 rating.

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Seadog 4265311 Surface Mount Usb 3.0 & Usb-C Power Socket, Square - 426531-1 - 354-4265311F1

Sea-Dog Line, Lines & Rigging
$57.19

Surface mount USB 3.0 & USB-C Power Socket charges two devices simultaneously. When split, the total 6A output is 3A per side. USB 3.0 features Quick Charging (QC) for supported devices, giving enough power to charge phones, pads, and tablets quickly and efficiently. USB-C features Power Delivery (PD) for faster and more flexible charging. Protective dust cap covers ports when not in use. Constructed of injection molded nylon. Easy installation requires drilling a 3/16" hole for the wire connection, secure to surface with two #6 screws (not included) and snapping concealed fastener cover in place. Output DC: 5V/6A. Input: 8-32VDC. USB-C Watts: 60W@24V. USB 3.0 Watts: 36W@12V. Blue LED illumination. IP65 rating. CE, RoHS compliant.

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Seadog 4265351 Surface Mount Usb 3.0 & Usb-C Power Socket, Oval - 426535-1 - 354-4265351F1

Sea-Dog Line, Lines & Rigging
$57.19

Surface mount USB 3.0 & USB-C Power Socket charges two devices simultaneously. When split, the total 6A output is 3A per side. USB 3.0 features Quick Charging (QC) for supported devices, giving enough power to charge phones, pads, and tablets quickly and efficiently. USB-C features Power Delivery (PD) for faster and more flexible charging. Protective dust cap covers ports when not in use. Constructed of injection molded nylon. Easy installation requires drilling a 3/16" hole for the wire connection, secure to surface with two #6 screws (not included) and snapping concealed fastener cover in place. Output DC: 5V/6A. Input: 8-32VDC. USB-C Watts: 60W@24V. USB 3.0 Watts: 36W@12V. Blue LED illumination. IP65 rating. CE, RoHS compliant.

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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.