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Premium Marine Quality Parts

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Sierra Nitride Coated Nautalift 11 - 17" Range 6" Stroke Gas Lift Supports - Gs62740 - 11-Gs62740F1

Sierra, Miscellaneous
$55.89

Marine grade, exact fit OE replacement gas filled supports. Nitride coated annealed steel rods for corrosion resistance. Features engineered polymer rod ends, bronze bushings and a unique multi-lobe internal seal. Nitrogen filled. ALWAYS replace gas springs in pairs. Electrostatic black coated steel housing.

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Sierra Nitride Coated Nautalift 11 - 17" Range 6" Stroke Gas Lift Supports - Gs62730 - 11-Gs62730F1

Sierra, Miscellaneous
$55.89

Marine grade, exact fit OE replacement gas filled supports. Nitride coated annealed steel rods for corrosion resistance. Features engineered polymer rod ends, bronze bushings and a unique multi-lobe internal seal. Nitrogen filled. ALWAYS replace gas springs in pairs. Electrostatic black coated steel housing.

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Sierra Nitride Coated Nautalift 11 - 17" Range 6" Stroke Gas Lift Supports - Gs62720 - 11-Gs62720F1

Sierra, Miscellaneous
$55.89

Marine grade, exact fit OE replacement gas filled supports. Nitride coated annealed steel rods for corrosion resistance. Features engineered polymer rod ends, bronze bushings and a unique multi-lobe internal seal. Nitrogen filled. ALWAYS replace gas springs in pairs. Electrostatic black coated steel housing.

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Sierra Mp78730 Rotoswitch, On/Off/On Spdt - Mp78730 - 11-Mp78730F1

Sierra, Miscellaneous
$28.39

^Rotoswitch® provides illumination with different colors providing immediate visual information of switch position. Unique ergonomic design, styling and performance in one design20 amp @12 Volts DCDurable cam design for long lifeUV stablized thermoplastic housingKnob acts as umbrella - Silicone lip seal mates with stalkSeparate light modules optionalReplaces toggle or rocker switches with minimal panel alterations1/2" Hole sizeOn in parenthesis (On) indicates a momentary position

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Sierra Mp41400 Oil Pressure & Temperature Warning Kit - Features Buzzer Alert & Switch - Mp41400 - 11-Mp41400F1

Sierra, Miscellaneous
$77.99

Loud warning buzzer alerts operator of dangerously high engine temperatures or low engine oil pressure. Kit includes instructions, oil pressure switch, and temperature switch.

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Sierra Mp40970-1 Emergency Engine Cut Off Switch & Lanyard - Mp40970-1 - 11-Mp409701F1

Sierra, Miscellaneous
$52.59

Developed for use on older boats not equipped with this important safety feature. Just pull lanyard to instantly stop engine, preventing "runaway" situations. Includes fully illustrated instructions, coiled lanyard and all parts for installation.

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Sierra Mp39350 Brass 10 Amp Spst Momentary On/Off Push-Button Switch - Mp39350 - 11-Mp39350F1

Sierra, Miscellaneous
$47.49

Mom On/Off/SPST. Plasticized coating w/ brass construction. 15/16" L x 5/8" -32 mounting bushing. Terminal: two 12" L 18 ga. wire leads.

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Sierra Mp28900 Replacement Brp Emergency Cut Off Switch Lanyard - Mp28900 - 11-Mp28900F1

Sierra, Miscellaneous
$49.39

Lanyard for emergency engine cut-off switch. Kills ignition when lanyard is pulled. For use with conventional or magneto ignitions. Seals out moisture and makes reconnection easier.

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Sierra Mp28870 Omc Emergency Cut Off Switch & Lanyard - Mp28870 - 11-Mp28870F1

Sierra, Miscellaneous
$70.99

Emergency cut-off switch and lanyard.

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Sierra Mercury/Mariner Stator - 18-5870 - 47-5870F1

Sierra, Miscellaneous
$471.89
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Sierra Gs62660 Nitride Coated Nautalift 8.5 - 12" Range 20 Lb Force 3.5" Stroke Gas Lift Supports - Gs62660 - 11-Gs62660F1

Sierra, Miscellaneous
$59.99

Marine grade, exact fit OE replacement gas filled supports. Nitride coated annealed steel rods for corrosion resistance. Features engineered polymer rod ends, bronze bushings and a unique multi-lobe internal seal. Nitrogen filled. ALWAYS replace gas springs in pairs. Electrostatic black coated steel housing.

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Sierra Exhaust Manifold - 18-1957-2 - 47-19572F1

Sierra, Miscellaneous
$604.59

Sierra manifolds are painted, packaged and leak tested.

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Sierra Ea01100 Surface Mount Aux Power Socket - Ea01100 - 11-Ea01100F1

Sierra, Miscellaneous
$19.69

Mount vertically, horizontally, or underneath a dash Surface-Mount allowing easy installation on any surface (no cut-out hole required)Flame retardant Nylon reinforced enclosureQuick Connect 1/4" TerminalsPerfect for replacing faulty auxiliary power sockets or adding a convenient charge pointMade of UV-stabilized plastic with water-tight gaskets and cover caps for the socketsWatertight cap9-36V 20A RatedIlluminated

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Sierra Ea01050 Aux Power Socket - Ea01050 - 11-Ea01050F1

Sierra, Miscellaneous
$18.69

Watertight cap Twist lock system securely locks plug into socketQuick Connect 1/4" Terminals9-36V 20A RatedFlame retardant nylon reinforced enclosure1-1/8" diameter cut-outPerfect for replacing faulty auxiliary power sockets or adding a convenient charge pointIlluminated

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Sierra Brass Freeze Plug Kit - 18-56481 - 47-56481F1

Sierra, Miscellaneous
$88.49

Eliminates any chance of rusted out freeze plugs. Designed for marine applications. Includes all plugs needed for a complete engine.

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Sierra Av10040 Push-Button Switch, Off/On, Non-Illuminating - Av10040 - 11-Av10040F1

Sierra, Miscellaneous
$36.29

Sleek Stainless Steel Design Sleek Stainless Steel DesignQuick connect tab terminals for easy installation and daisy chainingSealed to IP67 for above-panel componentsUL1500 Ignition Protection(On) in parenthesis indicates a momentary position

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Sierra Av10030 Push-Button Switch, Off/(On), Non-Illuminating - Av10030 - 11-Av10030F1

Sierra, Miscellaneous
$36.09

Sleek Stainless Steel Design Quick connect tab terminals for easy installation and daisy chainingSealed to IP67 for above-panel componentsUL1500 Ignition Protection(On) in parenthesis indicates a momentary position

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Sierra Ac12540 15A Shore Power Inlet - Ac12540 - 11-Ac12540F1

Sierra, Miscellaneous
$53.09

Eegantly designed while providing superior functionality. Built of marine-grade, UV stabilized glass-filled polyester designed for long-life and strength. Easy to install and perfect for use in harsh marine environments. Use as a pass-thru 15A 125VAC connectionPress-fit, watertight rubber cap and rubber gasket protects from water intrusionHeavy duty wire for superior performanceSimple installation requiring only a 2"" hole saw and a phillips screw driver

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Sierra Ac12520 30A Shore Power Inlet - Ac12520 - 11-Ac12520F1

Sierra, Miscellaneous
$120.19

Elegantly designed while providing superior functionality. Built of marine-grade, UV stabilized glass-filled polyester designed for long-life and strength. Sierra's 30A power inlets are easy to install and perfect for use in harsh marine environments. 30A, 125VAC rated3-Wire locking designCorrosion and UV resistant designConvenient sealing cap stays in open position without holding in placeRear enclosure keep electrical components covered for maximum safetyElegent, premium designed sealing coverEasy to install or retrofit older inlets

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Sierra Ac12420 15A Inlet Port With Extension, 18" Dual - Ac12420 - 11-Ac12420F1

Sierra, Miscellaneous
$58.79

Feature a modern, yet stylish design that can be installed on any flat surface and can to be used with any application. Includes an integrated extension cord for plug-and-play use making it perfect for battery chargers, shore power, engine block heaters, home use, and so much more. Use as a pass-thru 15A 125VAC connectionPress-fit, watertight rubber cap and rubber gasket protects from water intrusionHeavy duty wire for superior performanceSimple installation requiring only a 2" hole saw and a phillips screw driverETL Listed

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Sierra Ac12410 15A Inlet Port With Extension, 12' Single - Ac12410 - 11-Ac12410F1

Sierra, Miscellaneous
$65.99

Feature a modern, yet stylish design that can be installed on any flat surface and can to be used with any application. Includes an integrated extension cord for plug-and-play use making it perfect for battery chargers, shore power, engine block heaters, home use, and so much more. Use as a pass-thru 15A 125VAC connectionPress-fit, watertight rubber cap and rubber gasket protects from water intrusionHeavy duty wire for superior performanceSimple installation requiring only a 2" hole saw and a phillips screw driverETL Listed

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Sierra Ac12400 15A Inlet Port With Extension, 6' Single - Ac12400 - 11-Ac12400F1

Sierra, Miscellaneous
$59.39

Feature a modern, yet stylish design that can be installed on any flat surface and can to be used with any application. Includes an integrated extension cord for plug-and-play use making it perfect for battery chargers, shore power, engine block heaters, home use, and so much more. Use as a pass-thru 15A 125VAC connectionPress-fit, watertight rubber cap and rubber gasket protects from water intrusionHeavy duty wire for superior performanceSimple installation requiring only a 2"" hole saw and a phillips screw driverETL Listed

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Sierra Ac12390 15A Inlet Port With Extension, 16" Single - Ac12390 - 11-Ac12390F1

Sierra, Miscellaneous
$47.29

Feature a modern, yet stylish design that can be installed on any flat surface and can to be used with any application. Includes an integrated extension cord for plug-and-play use making it perfect for battery chargers, shore power, engine block heaters, home use, and so much more. Use as a pass-thru 15A 125VAC connectionPress-fit, watertight rubber cap and rubber gasket protects from water intrusionHeavy duty wire for superior performanceSimple installation requiring only a 2" hole saw and a phillips screw driverETL Listed

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Sierra Ac12380 50A Shore Power Cordset, 50', Yellow - Ac12380 - 11-Ac12380F1

Sierra, Miscellaneous
$1,406.29

Feature marine-grade materials of the highest quality. Heavy-duty, marine-grade 6/4 cable and includes standard threaded rings on each end. Sierra Cordsets supply superior performance and perfect for use in harsh marine environments. 50A, 125/250VAC RatedHeavy-duty, flexible, marine-grade 10/3 STW cable104 strand count cable for optimal balance of flexibility and strengthBoat side power indicator LED assures power to the inletWatertight plug assembly for safety and overall durabilityYellow PVC cord jacket with maximum UV inhibitorsNylon plug body for high resistance of carbon trackingIndustry standard sealing rings for a watertight boat side sealHigh quality, corrosion resistant nickel-plated brass contactsETL Listed

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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.