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Mercruiser Electrical System


Parts Selection Guide

Find the parts you need

  • 1) Engine Manufacturer:
  • 2) Part Type:
  • 3) Select Model:

Prop Selection Guide

Find the right prop for your boat

  • Engine Manufacturer:
  • Engine Horsepower:
  • Engine Model:
  • Engine Year:
  • Prop Pitch:
      • Sierra 18-5899 Oil Pressure Sender Replaces 3857532

        Sierra 18-5899 Oil Pressure Sending Unit for Mercruiser, Volvo, OMC Sierra replacement oil pressure sender. Used on most types of marine applications on sterndrive and inboard engines. All Sierra aftermarket engine parts are manufactured to meet or...

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      • Mercury - Mercruiser Starter Assembly 50-863007A-1

        Mercury - Mercruiser 50-863007A-1 Starter Assembly for Mercury - Mercruiser Engines Every marine technician knows that the starter motor assembly takes stored energy (in the form of electricity, air, or even hydraulic power) and converts it into a...

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      • Sierra 18-5898 Temperature Sender Replaces 97258A1

        Sierra 18-5898 Water Temperature Sender for Mercruiser, Crusader, OMC Used on most types of marine applications on sterndrive and inboard engines. Fits: MCM/MIE engines Specifications: Thread Size: 1/2" or 12.7mm -14 NPT Terminal Type:...

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      • Sierra 18-5913-1 Starter Replaces 50-863007A1

        Sierra 18-5913-1 Starter For Mercruiser, OMC, Volvo with Offset Bolt Pattern For Late model GM 4.3L (1996 & up ); 5.0 & 5.7L (1998 & up ) with a 14" Flywheel. Delco permanent magnet gear reduction 2 bolt starter Bolt Pattern:...

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      • Sierra 18-5897 Temperature Sender Replaces 806490T

        Sierra 18-5897 Water Temperature Sender for Mercruiser, Volvo, OMC Water Temperature Sender for Mercruiser, Volvo and OMC 4cyl, 6cyl and Small Block V8 Engines using 3/8"-18NPT. Thread Size: 3/8" or 9.5mm -18 NPT Terminal Type: 10-32...

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      • Sierra 18-5815 Starter Solenoid Replaces 89-853654A1

        Sierra 18-5815 Starter Solenoid for Mercruiser, Mercury Sierra Solenoids are designed to meet OEM specifications. Used for starter and power trim systems. Fits Outboard 2 Cyl. & In-Line 6 & MCM applications. Interchangeable...

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      • Sierra 18-6275-1 Starter Replaces 50-863007A1

        Sierra 18-6275-1 Starter for 3.0L Mercruiser, Volvo Permanent magnet gear reduction starter. Used on late model Mercruiser and Volvo 3.0L marine engines with a 14" Flywheel. Fits 1983 & newer GM V-6 & V-8 engines, 1999 & newer MCM 3.0L...

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      • Sierra 18-5907 Starter

        Sierra 18-5907 Starter - Heavy Duty, No Core For GM and Ford Engines. Clockwise rotation & Top Mount. Replacement...

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      • Sierra 18-8402-1 Starter Bolt

        Sierra 18-8402-1 Starter Bolt Sierra replacement starter bolt for Mercruiser Stern Drives. Length: 4-3/8" Thread Size: 3/8" - 16 Interchangeable with: Mercruiser Stern Drive 10-8053432 10-813642

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      • Sierra 18-5966 Alternator Replaces 817119A4

        Fits 1982 and newer GM 4 cylinder engines; Single Groove; AMP Rating 55; also fits 1982 - 1996 GM V-6 & V-8 engines. Replaces: Pro...

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      • Sierra 18-5910 Permanent Magnet Starter Replaces 50-863007A1

        Sierra 18-5910 Permanent Magnet Starter - Heavy-Duty Sierra high-quality engine parts are designed to meet OEM specifications. Permanent Magnet GM Starter for V-6 and V-8 Small Block Engines. Engine; Small Block GM V-6 & V-8 Flywheel Size:...

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      • Sierra 18-7600 Coolant Temperture Sensor Replaces 805218T

        Sierra 18-7600 Temperature Sensor for Mercruiser and Crusader engines Used for temperature gauge Fits MCM/MIE EFI Models Interchangeable with: Crusader 47002 Mallory 9-42402 Mercruiser Stern Drive 805218T 805218

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      • Sierra 18-5802 Starter Solenoid Replaces 65057T1

        Sierra 18-5802 Starter Solenoid for Mercruiser Stern Drives Sierra high-quality engine parts are designed to meet OEM specifications. Interchangeable with: Arco SW981 GLM 72410 Mallory 9-15106 Mercruiser Stern...

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      • Sierra 18-5836 Starter Solenoid Replaces 25661T1

        Sierra 18-5836 Solenoid Switch for Mercury, Mercruiser Sierra high-quality replacement parts are designed to meet OEM specifications. Interchangeable with: Arco SW661 GLM 72480 Mallory 9-15103 Mercruiser Stern...

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      • Sierra 18-5919-1 Starter Replaces 50-806965A4

        Sierra 18-5919-1 Starter for Mercruiser, Volvo Sierra high-quality replacement starter for late model GM 12-3/4" flywheel. Bolt Pattern: Straight across Teeth: 11 Use with: 18-6287 Solenoid Interchangeable...

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      • Sierra 18-5957 Alternator Replaces 78403A2

        Sierra 18-5957 68 Amp Alternator for Mercruiser, OMC, Volvo Replaces Mando, Motorola and original equipment Delco. Equipped with fan and drive pulley 3-Wire, 68 Amp For: Pleasurecraft RA097002 Prestolite 37 Amp Universal 1983 & below For:...

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      • Sierra 18-5837 Starter Solenoid Replaces 89-18080

        Sierra 18-5837 Starter Solenoid for Mercruiser, Volvo, OMC Engines Sierra high-quality engine parts are designed to meet OEM specifications. For Delco Remy Starters Interchangeable with: Arco SW984 GLM 72460 Johnson/Evinrude...

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      • 55 Amp Mando Alternator (Black), Mercury - Mercruiser 817119A-4

        55 Amp Mando Alternator (Black), Mercury - Mercruiser 817119A-4 Mando 55 amp, v-belt application Fits 1982 and newer GM 4 cylinder engines; also fits 1982 - 1996 GM V-6 & V-8 engines. Replaces: Pro Marine 60050, 3144M Sierra 18-5966

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      Mercruiser Electrical System

      The delicate balance of your Mercruiser electrical system is essential to maintain. Each part should be kept in tip top shape to ensure your craft is ready to go when you are. Who wants to dive into the overwhelming task of diagnosing and repairing an electrical system issue? Like many other boaters have already, you can depend on all of the parts we carry here at Wholesale Marine for your Mercruiser electrical system.

      What You Need, When You Need It

      Start your search with our handy Parts Selection Guide located at the top of this page. Simply select “Mercruiser” and then choose from the convenient drop-down menu that lays out each part we carry in a simple to read format. Perhaps an alternator is your need? We carry a wide range of Sierra and Mercury made inventory including alternators, voltage regulators, conversion kits, alternator brackets, and fuse kits, each depicting which part and model number it will replace. All of that power will get you no where without a way to get it started. We have plenty of starters, including diesel, in this one-stop-shop, along with bolts and brush sets. Don’t overheat or overrun your engine. Be sure your coolant, oil pressure, and temperature senders are all running at their best.

      The electrical system on anything can be a complicated one. We are here to help! Real boaters with first hand experience make up the exceptional Wholesale Marine customer service team. Call us at (877) 388-2628 to answer your questions and guide you in product selection, Monday through Friday 9:00 AM to 6:00 PM, EST. We want to be sure that you are satisfied with your purchase and that you can make your choice with confidence. Any purchase made before 4 PM EST gets shipped that day and we offer free shipping for orders of $99. Check out our Captain’s Club loyalty rewards program to earn points and experience perks.