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      Mercruiser Gearcase & Drive Parts Product Listings

      • Sierra 18-2648 Upper Unit Seal Kit Replaces 26-32511A1
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        $35.09
        $25.29

        Sierra 18-2648 Upper Unit Seal Kit Sierra replacement upper unit seal kit for MerCruiser Stern Drives. Sierra replacement engine parts are manufactured to meet or exceed OEM requirements. For: #1 Units (Including Alpha) (Also fits 888 stern drive)...

      • Sierra 18-2190 Shift Cable Replaces 865436A02
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        $107.79
        $77.59

        Sierra 18-2190 MerCruiser Aft Installation Shift Cable Sierra high-quality parts are designed to meet OEM specifications. Features: MerCruiser 1 drives s/n 6225577 & Up for AFT installation into bell housing For use in applications using core...

      • Sierra 18-2615 Outdrive Gasket Set Replaces 16755Q1
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        $8.19
        $6.39

        Sierra 18-2615 MerCruiser Bravo Outdrive Gasket Set Sierra high-quality replacement engine parts are designed to meet OEM specifications. For All Bravo Outdrives. Interchangeable With: GLM 39640 Mallory 9-62604 MerCruiser Stern...

      • Sierra 18-21001 Gimbal Bearing Replaces 30-879194A02
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        $107.09
        $77.09

        Sierra Marine 18-21001 MerCruiser Gimbal Bearing Non-greasable MerCruiser gimbal bearing from Sierra Marine. Sierra engine parts are designed to meet or exceed OEM requirements. Fits: MC-1, R, MR, and Aplha (1974-97), Gen II Aplha (1991-97), Bravo...

      • Mercury - Mercruiser 25-8M0204683 O-Ring
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        $2.49

        Mercury-MerCruiser 25-8M0204683 .7" x .301" O-Ring The Mercury-MerCruiser 25-8M0204683 O-Ring is a genuine replacement sealing component for compatible Mercury and MerCruiser applications. This O-ring measures .7 inch x .301 inch and is used where part...

      • Sierra 18-2751 MerCruiser Alpha One Gen I U-Joint Bellows Replaces 60932A4
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        $79.39
        $57.19

        Sierra 18-2751 MerCruiser Alpha One Gen I U-Joint Bellows Replaces 60932A4 This Sierra u-joint bellows is designed for use with MerCruiser Alpha One Gen I drives. Features: Fits MerCruiser Alpha One Gen I drives from 1983-1991 with serial numbers...

      • Mercruiser Alpha One Gen II Outdrive 300 HR Service Kit
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        $655.79
        $546.49

        Mercury 8M0147073 300-Hour Maintenance Kit for MerCruiser Alpha One Gen II Sterndrives (1991 & Newer) Ensure long-lasting performance from your MerCruiser Alpha One Gen II sterndrive with this complete 300-hour OEM maintenance kit. Designed for 1991...

      • Mercury - Mercruiser 8M0204680 Seal
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        $3.99
        $3.49

        Mercury-MerCruiser 26-8M0204680 Gear Housing Seal The Mercury-MerCruiser 26-8M0204680 Gear Housing Seal is a genuine OEM replacement seal for select MerCruiser sterndrive applications. This seal is used on compatible MerCruiser 1, MC-1, R, MR, Alpha...

      • Sierra 18-1705 Alpha Gimbal Housing Hinge Pin Replaces 77123
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        $32.29
        $23.29

        Sierra 18-1705 Alpha Gimbal Housing Hinge Pin Replaces 77123 This Sierra gimbal housing hinge pin is designed for use with MerCruiser Alpha Gen I & II drives with a grease port. Fits: MerCruiser Alpha One Gen I drives from 1983-1991 with serial...

      • Sierra 18-2747 MerCruiser Alpha One Gen II 1991 & Newer Drive Bellows Replaces 816431A1
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        $78.49
        $56.49

        Sierra 18-2747 MerCruiser Alpha One Gen II 1991 & Newer Drive Bellows Replaces 816431A1 This Sierra drive bellows is designed for use with MerCruiser Alpha One Gen II drives from 1991 to the present. Application Info: Fits MerCruiser Alpha One Gen...

      • Sierra 18-2756 MerCruiser Bravo U-Joint Bellows Replaces 8M0062406
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        $90.19
        $64.89

        Sierra 18-2756 MerCruiser Bravo U-Joint Bellows Replaces 8M0062406 This Sierra U-joint bellows is designed for use with MerCruiser Bravo & Blackhawk drives. Features: Fits MerCruiser Bravo I, Bravo II, Bravo III drives from 1988-1998 with...

      • Sierra 18-1710 MerCruiser Bravo Bellows Flange Ring Replaces 862209
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        $9.49
        $8.09

        Sierra 18-1710 MerCruiser Bravo Bellows Flange Ring Replaces 862209 This Sierra bellows flange ring is for MerCruiser Bravo drives. Fits: Bravo I, Bravo II, & Bravo III drives from 1988-1998 with serial numbers 0B664190 and...

      • Sierra 18-2646-1 Lower Unit Seal Kit Replaces 26-816575A3
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        $68.89
        $49.59

        Sierra 18-2646-1 MerCruiser Alpha One Gen II Lower Unit Seal Kit Used On All MerCruiser Alpha I Gen II Lower Units 1991-Up Kit Includes: Sie-18-2599 Face Seal And Tool Sie-18-2564 Water Pump Base To Face Plate Gasket Sie-18-2566 Face Plate To...

      • Mercury - Mercruiser 26-812889 Seal
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        $2.49
        $1.99

        Mercury-MerCruiser 26-812889 Seal The Mercury-MerCruiser 26-812889 Seal is a replacement sealing component for compatible Mercury and MerCruiser applications. This seal is used where part number 26-812889 is specified by the Mercury-MerCruiser parts...

      • Sierra 18-9099 MerCruiser Trailering Clips Replaces 817019Q2
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        $45.99
        $33.09

        Sierra 18-9099 MerCruiser Trailering Clips Replaces 817019Q2 These Sierra trailering clips are designed for use with MerCruiser drives. I.D.: 3/4" Length: 11-1/8" Application Info: Fits Alpha One Gen I drives from 1983-1991 with serial numbers...

      • Sierra 18-8218 MerCruiser Alpha One Gen II 1991 & Up Bellows Seal Kit Replaces 30-803099T1
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        $349.79
        $251.79

        Sierra 18-8218 MerCruiser Alpha One Gen II 1991 & Up Bellows Seal Kit Replaces 30-803099T1 This Sierra bellows seal kit for use with MerCruiser Alpha One Gen II Stern Drives. All Sierra aftermarket engine parts are manufactured to meet or exceed OEM...

      • Sierra 18-2644 Upper Unit Seal Kit Replaces 26-88397A1
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        $49.19
        $35.39

        Sierra 18-2644 MerCruiser Alpha I Gen II Drive Shaft Housing Seal Kit Sierra high-quality engine parts are designed to meet OEM specifications. For Alpha I Gen II  Kit Contains: (1) 18-2003 Oil Seal (2) 18-2056 Oil Seal (1) 18-2715 Check...

      • Sierra 18-8219 MerCruiser Bravo Bellows Seal Kit Replaces 8M0095485
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        $395.69
        $284.89

        Sierra 18-8219 MerCruiser Bravo Bellows Seal Kit Replaces 8M0095485 This Sierra bellows seal kit is designed for use with Bravo drives and includes a sealed gimbal bearing. Fits: Bravo I/II/III (1998 & Up) s/n 0B664190 & up Blackhawk...

      • Sierra 18-2100K Seal & Bearing Kit
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        $111.09
        $79.99

        Sierra 18-2100K Seal & Bearing Kit Sierra replacement greasable seal and bearing kit for MerCruiser Stern Drives. Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements. Fits: 1, R, MR and Alpha...

      • Quicksilver OEM MerCruiser Hinge Pin Tool 78310
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        $32.49
        $28.49

        Quicksilver OEM MerCruiser Hinge Pin Tool 78310 This OEM hinge pin tool is designed to remove and install hinge pins from all MerCruiser drive units. Replaces: Sierra 18-9861 Mallory 9-79805 GLM 90200 Pro...

      Mercruiser OEM Engine Parts Finder

      MerCruiser Gearcase

      Shims, yokes, and spools may throw your head in a whirl. Just the idea of “gearcase” is an intimidating one, especially for newer boaters and those just taking on the do-it-yourself route. You’ve made a wise choice with your MerCruiser engine, but are now hoping to perform preventative maintenance or repair a busted part. Wholesale Marine has all that you need for your MerCruiser gearcase for pre-Alpha, Alpha, and Bravo drives.

      Shop for Your MerCruiser Gearcase and Drive Part Needs

      Whether a pro boater or a casual weekend cruiser, your MerCruiser gearcase needs attention from time to time. The delicate intricacies of the gearcase are not to be taken lightly, and we recommend referring to your engine’s manual, manufacturer’s website, or a number of other resources as you diagnose or update your boat’s engine. Once you know what you are looking for, we strive to make it as easy as possible to locate it, beginning with our Parts Selection Guide. You can depend on Wholesale Marine to provide high quality Mercury outboard parts and Mercury sterndrive parts from the top brands in the industry. We offer a wide array of MerCruiser gearcase components. Both upper and lower gear housing seal kits are offered, each one meeting OEM standards and including all that you need. Upper unit gears, shift spools, replacement drives, shims, O-rings, and seals make this an excellent comprehensive site for all of your MerCruiser gearcase needs.

      Whether an engine expert or a newer novice, we want to assist you in your MerCruiser gearcase journey. We have a highly-trained team full of experienced boaters who have been in your shoes and can help you choose the right part from the get-go. We are here Monday through Friday, 9:00 AM to 6:00 PM EST, at (877) 388-2628 to help you narrow down your search and select just the right part for the job. Our Captain’s Club Rewards Program, shipping perks, and price match guarantee are added bonuses to ensure each and every customers’ satisfaction. Remember you can always depend on Wholesale Marine for high quality Mercury outboard parts and Mercury sterndrive parts from the top brands in the industry. So plan to call us for all your boating needs today!