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      Mercruiser Gearcase & Drive Parts Product Listings

      • Mercury - Mercruiser 25-29619 O Ring @5
        $2.49
        $1.99

        Mercury - Mercruiser 25-29619 O Ring Genuine OEM Mercury-Mercruiser part. - Minimum Order Quantity 5.Special Order Item: This product is ordered specifically for your application. To help ensure proper fitment, please confirm compatibility with your...

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      • Mercury - Mercruiser 25-86993 O Ring
        $4.99
        $4.49

        Mercury - Mercruiser 25-86993 O RingSpecial Order Item: This product is ordered specifically for your application. To help ensure proper fitment, please confirm compatibility with your engine model using our Parts Finder & Schematics Guide before...

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      •  Mercury - Mercruiser 26-828626 Seal
        $25.99
        $22.99

        Mercury - Mercruiser 26-828626 SealSpecial Order Item: This product is ordered specifically for your application. To help ensure proper fitment, please confirm compatibility with your engine model using our Parts Finder & Schematics Guide before...

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      • CLEARANCE
        Mercury - Mercruiser 44-8146061 Prop Shaft
        $517.49
        $346.99

        Mercury - Mercruiser 44-8146061 Prop Shaft  Application: E/MR/ALPHA ONE (Transom Assembly) - 1983-1990 [6216687 THRU 0F386995] R/MR/ALPHA ONE (Sterndrive) - 1983-1990 [6225577 THRU 0F386995] ALPHA ONE (GEN.II) - 1991-1995 [0D469859 THRU...

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      • Mercury - Mercruiser 59830A-7 Yoke Assy
        $352.49
        $309.99

        Mercury - Mercruiser 59830A-7 Yoke AssySpecial Order Item: This product is ordered specifically for your application. To help ensure proper fitment, please confirm compatibility with your engine model using our Parts Finder & Schematics Guide before...

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      • SEI Mercruiser  Alpha 1 Propshaft 6 Jaw
        $438.05
        $365.04

        Sterndrive Engineering Alpha 1 Propshaft 6 Jaw Fits: Mercruiser I,R,MR Alpha I & Gen II drives 1973 to current Standard Right Hand Rotation Mercury Outboard 70-125 HP Metric Inline 3 & 4 Cylinder Engines 6 Jaw Reverse Only (1997...

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      • SEI Mercruiser Outboard 4.3L Repl Upper Unit 1.81
        $1,500.60
        $1,250.50

        SEI Mercruiser Outboard 4.3L Repl Upper Unit 1.81 Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number ready when calling. SE116, 1.81 Replacement Mercruiser...

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      • Sierra 18-1150 Needle Roller Bearing
        $70.99
        $49.49

        Sierra 18-1150 Mercruiser Needle Roller Bearing Sierra high-quality engine parts are designed to meet OEM specifications. Fits MC-I & R drives Interchangeable with: GLM 21600 Mercruiser Stern...

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      • CLEARANCE
        Sierra 18-2407 Gear Set
        $535.49
        $358.99

        Sierra 18-2407 Gear Set for Mercruiser MR/Alpha/Gen 2 Lower Gear Housings Sierra replacement gear set for MR/Alpha One/Gen II engines. Set Contains: (1) 18-1117 Pinion Bearing (1) 18-1143 Tapered Roller Bearing (1) 18-1155 Ball Bearing (1)...

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      • Sierra 18-7143-9 O-Ring (Priced Per Pkg Of 5)
        $10.99
        $8.49

        Sierra 18-7143-9 O-Ring (Priced Per Pkg Of 5) Sierra replacement O-ring. I.D.: 1.310" or 33.3mm Width: 0.100" or 2.5mm Package of 5 Interchangeable with: GLM 81250 Johnson/Evinrude Outboard 331188 Mallory 9-76537 Mercruiser...

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      • Sierra Retainer Seal Kit 18-2469
        $113.49
        $87.49

        Sierra Retainer Seal Kit 18-2469 This Sierra Retainer Seal Kit has Sierra's guaranteed fitment, backed by their lifetime warranty. It has a direct application fitment that exceeds OEM quality.  Interchangeable with: Mercruiser Stern...

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      • Mercruiser 31-803096T-1 Bearing Repair Kit
        $380.99
        $335.49

        Mercruiser 31-803096T-1 Bearing Repair Kit Genuine OEM Mercury-Mercruiser part. Fits Alpha One Gen II (s/n 0L100040 and up) Standard rotation (RH) .Special Order Item: This product is ordered specifically for your application. To help ensure proper...

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      • Mercruiser 43-18411A-2 Upper Gear Set - 1.50:1
        $757.49
        $635.99

        Mercruiser 43-18411A-2 Upper Gear Set - 1.50:1 Genuine OEM Mercury-Mercruiser part. Fits: MC‑I, R, MR, Alpha One & Gen II (s/n 0K999999 and below) (1971‑1997) 22-20 Teeth 1.50/1.47 Ratio .Special Order Item: This product is ordered specifically for...

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      • Mercruiser 43-18411A-4 Upper Gear Set
        $1,138.99
        $956.49

        Mercruiser 43-18411A-4 Upper Gear Set Genuine OEM Mercury-Mercruiser part. For use w/ heavy duty 1.50 gears only. The HD 1.50 drive gear has a stepped bearing surface requiring the use of a special bearing kit having 2 different I.D...

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      • Mercruiser 43-45814A-5 Upper Gear Set - 1.65:1
        $572.99
        $481.49

        Mercruiser 43-45814A-5 Upper Gear Set - 1.65:1 Genuine OEM Mercury-Mercruiser part. Fits: MC‑I, R, MR, Alpha One & Gen II (s/n 0K999999 and below) (1970‑1997) 24-24 Teeth 1.65/1.62 Ratio .Special Order Item: This product is ordered...

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      • Mercruiser 43-55778A-3 Upper Gear Set - 1.98:1
        $582.99
        $489.99

        Mercruiser 43-55778A-3 Upper Gear Set - 1.98:1 Genuine OEM Mercury-Mercruiser part. Fits: MC‑I, R, MR, Alpha One & Gen II (s/n 0K999999 and below) (1970‑1997) 20-24 Teeth 1.98/1.94 & 2.40 Ratio .Special Order Item: This product is ordered...

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      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!