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      • Sierra 18-8220 Fuse Kit Replaces 88-79023A91
        $43.49
        $30.49

        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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      • 55 Amp Mando Alternator (Black), Mercury - Mercruiser 817119A-4
        $361.19
        $300.99

        Quicksilver 817119A-4 55 Amp Mando Alternator - Black The Quicksilver 817119A4 alternator is a 55-amp OEM replacement designed for select MerCruiser sterndrive and inboard engines built by General Motors. Built for V-belt applications, this alternator...

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      • Sierra 18-5960 MerCruiser 65 Amp Alternator
        $368.99
        $257.99

        Sierra 18-5960 Mercruiser 65 Amp Alternator Sierra replacement alternator for Mercruiser Stern Drives. Sierra alternators meet or exceed USCG safety requirements and are 100% load tested for assured reliability. Pulley Type: Serpentine Amp Rating:...

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      • Quicksilver 862031T-1 Alternator Thumbnail Image
        $437.99
        $380.99

        Quicksilver 862031T-1 Alternator Quicksilver 70 amp alternator 862031T1 is for V6 and V8 MerCruiser sterndrive and inboard engines made by General Motors (1999-2001). See your service manual for replacement directions. Easy to change out your...

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      • Sierra 18-6298 Alternator
        $360.49
        $252.49

        Sierra 18-6298 MerCruiser Alternator Sierra high-quality engine parts are designed to meet OEM specifications. All Sierra alternators meet or exceed USCG and SAE J1171 safety requirements and are 100% load tested for assured reliability. This MerCruiser...

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      • Sierra 18-5966-1 Alternator
        $317.99
        $241.99

        Sierra 18-5966-1 Alternator The Alternator is constructed with a single groove pulley type. Fits: Mercruiser 12449 12449A1 817119A1 817119A4 92497 92497A3 98555A1 Supersedes 18-5966

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      • Sierra 18-5983 Alternator
        $345.49
        $262.49

        Sierra 18-5983 Alternator Sierra replacement engine parts are engineered to meet or exceed OEM requirements. Amp Rating: 7SI/70 Mount Type: Hinge Pulley Type: Single Groove Fits: MCM 3.0L (s/n 0L382122 - 0M326292) Interchangeable...

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      • CDI XT-SF-170 XT Series Alternator
        $815.99
        $579.49

        CDI XT-SF-170 XT Series Alternator The CDI XT Series Alternator is designed for use with Volvo Penta (Gas & Diesel), Mercruiser, Pleasurecraft, Crusader, and Indmar engines. Replaces: XT-SF-170-IR  

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      • Sierra 18-5946-1 MerCruiser Alternator
        $266.99
        $186.99

        Sierra 18-5946-1 MerCruiser Alternator This alternator is designed with a single wire connection that fits MerCruiser and other applications. This model is equipped with a fan and serpentine drive pulley

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      • CDI XT-VT-170 XT Series Alternator
        $815.99
        $579.49

        CDI XT-VT-170 XT Series Alternator The CDI Electronics XT-VT-170 is an XT Series Alternator designed with a Vortec Mount, K6 Serpentine Pulley, Case Ground GM Style Mounting typical for GM Block (Chevy) 5.0L, 5.7L, 6.2L Engines...

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      • Sierra 18-5967-1 Alternator
        $328.99
        $249.99

        Sierra 18-5967-1 Alternator Sierra replacement alternator for Mercruiser Stern Drives. Sierra alternators meet or exceed USCG safety requirements and are 100% load tested for assured reliability. Pulley Type: Serpentine Amp Rating: 55 Fits...

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      Mercruiser OEM Engine Parts Finder

      Mercruiser Alternators

      Wholesale Marine carries all the high-quality engine parts you need for your Mercruiser sterndrive engines including Mercruiser alternators. Boat alternators provide electrical energy to the battery by converting the mechanical energy from the motor. Without this energy, the battery voltage will drop, and the boat will stop running. Ensuring that your Mercruiser alternator’s in top working order is a must for a smooth boating experience every time.

      Whether you need to replace or upgrade your Mercruiser alternator, Wholesale Marine’s experts can help. We carry the top brands in engine part replacements, including Sierra. Their quality parts will keep your engine running for years. Our easy-to-use part selector tool will help you select the exact alternator you need for your make and model boat. Select your Mercruiser model number in the drop-down menu to find the right Mercruiser alternator.

      We Have Everything you Need for Your Sterndrive

      Not only do we have boat alternators in stock and ready to ship, but we also carry fuse kits, alternator conversion kits, alternator brackets, and voltage regulators. All of these alternator parts are manufactured to Sierra’s high standards and will have you back out on the water in no time.

      Stalled out because of a faulty alternator? Let Wholesale Marine get you back out on the water with our selection of Mercruiser alternators and parts. Have a question about which model to buy, contact our boating professionals at 877-388-2628 Monday through Friday. Order by 4:00 PM and all in-stock products ship out the same day. We also make sure you get the best price around with our price match guarantee. Make sure to ask our team about our Captain's Club Rewards Program. Sign-up today and receive discounts on future purchases at Wholesale Marine.