Mercruiser Electrical System

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Parts Selection Guide

Find the parts you need

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Prop Selection Guide

Find the right prop for your boat

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      • Sierra 18-5899 Oil Pressure Sender Replaces 3857532
        $42.99
        $29.99

        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
        $301.19
        $250.99

        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
        $26.99
        $18.99

        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
        $302.49
        $226.99

        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
        $35.49
        $24.99

        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 18-8402-1 Starter Bolt
        $12.49
        $9.49

        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 18-6275-1 Starter Replaces 50-863007A1
        $302.49
        $205.99

        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 18-5802 Starter Solenoid Replaces 65057T1
        $41.99
        $29.49

        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 18-5957 Alternator Replaces 78403A2
        $216.99
        $151.99

        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 18-5836 Starter Solenoid Replaces 25661T1
        $41.99
        $31.99

        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 18-8220 Fuse Kit Replaces 88-79023A91
        $40.99
        $28.99

        Sierra 18-8220 Mercruiser 90 Amp Fuse Kit For use with SIE-18-5953 alternator conversion kits installed on Mercruiser 470 and 3.7L aluminum block engines serial number 6902288 and Up. Amp Rating: 90 Mounting Hole: 13/32" Use with: 18-5953...

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      Mercruiser OEM Engine Parts Finder

      MerCruiser Electrical Systems

      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

      Depend on Wholesale Marine to provide high quality Mercury outboard parts and Mercury sterndrive parts from the top brands in the industry. 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 that power is useless without a means to get it started. Not to worry. Wholesale Marine stocks 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.

      Troubleshooting your boat’s electrical system can be complicated. 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 with your MerCruiser electrical system selection, Monday through Friday 8:30 AM to 4:30 PM, EST.  Remember, you can always depend on Wholesale Marine to provide high quality Mercury outboard parts and Mercury sterndrive parts from the top brands in the industry. 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 Rewards Program to start earning points towards future purchases.