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Mercruiser Gearcase & Drive Parts

guidebook

Parts Selection Guide

Find the parts you need

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      • Sierra 18-2945-9 Drain Screw Gasket (2Pk) Replaces 12-191833
        List Price: $2.07
        Starting At: $1.58

        Sierra 18-2945-9 Drain Screw Gasket (2 pack) This Sierra 18-2945 Drain Screw Gasket is used with 3/8-16 drain/fill screw found on all Mercruiser and most Mercury/Mariner O/Bs. This gasket is used in most lower units and sea water pumps. Sold as a 2...

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      • Sierra 18-2619-1 Outdrive Gasket Set Replaces 27-94966Q2
        List Price: $7.90
        Starting At: $6.00

        Sierra 18-2619-1 Mercruiser Outdrive Gasket Set Sierra high quality engine parts are designed to meet or exceed OEM requirements. For Mercruiser R, MR, Alpha and Alpha One Gen II Outdrives (1983 and Newer) (s/n 6225577 & up). Kit Includes: (1)...

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      • 19-889725t28
        List Price: $2.20
        Starting At: $1.83

        Prop PVS Vent Plug, Mercury - Mercruiser 19-889725T28 Small PVS Vent Plug (.280/7mm) Replaces: 19-889725047, 19-889725028, A46, A47, A48 suffix

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      • Sierra 18-2614 Outdrive Gasket Set Replaces 27-64818Q4
        List Price: $6.10
        Starting At: $4.64

        Mercruiser Pre-Alpha Outdrive Gasket Set by Sierra For Mercruiser Pre Alpha Sterndrives 1967-1982 Kit Includes: Sie-18-2820 Drive Shaft Housing To Bell Housing Gasket Sie-18-2840 Bell Housing Gasket Sie-18-7153 O-Ring Sie-18-7170 O-Ring  ...

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      • Sierra 18-2753-2 Shift Cable Bellows Replaces 74639A2
        List Price: $15.82
        Now: $11.07

        Mercruiser Shift Cable Bellows by Sierra Used on all #1, #2 units, Alpha, Alpha Gen II and Bravo I, II, III Includes 18-7321 Clamp Replaces: Mercruiser 74639A2,74639,31659 Mallory 9-72705 GLM 89080 Pro Marine 64639 Redline RL2753-2  

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      • Sierra 18-2750 Exhaust Bellows Replaces 18654A1
        List Price: $29.96
        Now: $20.97

        Mercruiser Alpha I Gen II Exhaust Bellows by Sierra Fits All Alpha #1 Units, Gen II,TRS, & Bravo I, II, III Includes 18-7314 Clamps Contains: Hose Clamp-2-9/16 TO 3-1/2 18-710-48-2 Replaces: Mercury 32734A3,18654A1, 32734 Mallory 9-72703 GLM ...

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      • Sierra 18-2601-1 Transom Seal Kit
        List Price: $208.77
        Starting At: $146.14

        Sierra 18-2601-1 Transom Seal Kit Sierra high quality replacement engine parts are designed to meet or exceed OEM requirements. Features Greasable Gimbal Bearing. Fits: R, MR, Alpha I (1983-1990) s/n 6225577 & Up, Alpha I SS (1986-1989) s/n...

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      • Sierra 18-2100 Gimbal Bearing Replaces 30-879194A02
        List Price: $66.41
        Now: $46.48

        Sierra 18-2100 Heavy Duty Gimbal Bearing Sierra replacement heavy duty gimbal bearing. Sierra engine parts are manufactured to meet or exceed OEM requirements. Key Features: Link Belt Greasable Fits all OMC, Cobra, and King Cobra...

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      • Sierra 18-2603 Lower Shift Cable Kit Replaces 865436A03
        List Price: $96.46
        Starting At: $67.52

        Mercruiser Alpha 1 Gen 2 Lower Shift Cable Kit by Sierra Kit Includes: Sie-18-2619-1 Outdrive Gasket Set Sie-18-2753-2 Shift Cable Bellows Sie-18-2190 Shift Cable Assembly Sie-18-2743 Drive Shaft Housing To Bell Housing Gasket Replaces: Mercury ...

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      • Sierra 18-2174 U-Joint Replaces 75832T1
        List Price: $58.44
        Starting At: $44.41

        Heavy Duty U-Joint for Mercruiser, OMC, Volvo Fits: Alpha 1 Units S/N B418819 & above Alpha 1 SS, Bravo, OMC Cobra, King Cobra (1990 - Up) and newer Volvo SX Drives Includes both straight and 90 degree grease fittings. (Rockwell) Replaces: ...

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      • Sierra 18-9861 Hinge Pin Tool Replaces 91-79310
        List Price: $22.88
        Starting At: $16.02

        Sierra 18-9861 Mercruiser Hinge Pin Tool Removes and installs hinge pins from all Mercruiser drive units. Replaces: Mercury 91-718310 Mallory 9-79805 GLM 90200 Pro Marine 18-9861  

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      • Sierra 18-2751 U-Joint Bellows Replaces 60932A4
        List Price: $54.17
        Now: $37.92

        Mercruiser Alpha Gen 1 U-Joint Bellows by Sierra Fits All #1 Units With Ridge (S/N 3469428 & Up) Includes Clamps Replaces: Mercury 60932A4, 60932A1 Mallory 9-72701 GLM 89050 Pro Marine 64932 Redline RL2751  

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      • Sierra 18-8206 Transom Seal Kit Replaces 30-803099T1
        List Price: $251.34
        Starting At: $191.02

        Sierra 18-8206-1 Mercruiser Alpha I Gen II Transom Seal Kit Sierra replacement transom seal kit for all Mercruiser Alpha I Gen II Sterndrives from 1991 - Current. Includes greasable gimbal bearing. Interchangeable...

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      • Sierra 18-2190 Shift Cable Replaces 865436A02
        List Price: $76.28
        Starting At: $53.40

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

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      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.

      Where to Begin?

      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. 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 loyalty rewards program, shipping perks, and price match guarantee are added bonuses to ensure each and every customers’ satisfaction