Mercury Outboard Gearcase & Drive Parts

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Parts Selection Guide

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Prop Selection Guide

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      • Sierra 18-3719 Pinion Nut Replaces 11-35921
        $5.49
        $3.99

        3/8" (18mm) Pinion Nut for Mercury, Mercruiser, OMC 3/8"-18mm Replaces: OMC - 0314730 Mallory - 9-78013 GLM - 11190 Pro Marine - 18-3719 Sterndrive Engineering - 98-102-37 Mercury 11-35921  

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      • Sierra 18-7157 O-Ring
        $4.99
        $3.49

        Sierra 18-7157 O-Ring I.D.: 3.500" or 88.9mm Width: 0.210" or 5.3mm Interchangeable with: GLM 83410 Mallory 9-76542 Mercruiser Stern Drive 25-29976 Mercury Marine 25-29976

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      • Sierra 18-7158 O-Ring Replaces 25-30613
        $0.28
        $0.21

        Sierra 18-7158 O-Ring Sierra high-quality engine parts are designed to meet OEM specifications. I.D.: 0.740" Width: 0.100" Interchangeable with: GLM 81160 Johnson/Evinrude Outboard 309731 310585 Mallory 9-76543 Mercruiser...

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      • Sierra 18-1155 Ball Bearing
        $54.99
        $41.99

        Sierra 18-1155 Ball Bearing Fits IA/IB/IC & EZ Shift, MC-I, R, MR, Alpha One & Gen II Interchangeable with: GLM 21620 Mallory 9-75114 Mercruiser Stern Drive 30-35914 30-17927 30-88957A1 30-88957 30-88957T Mercury Marine 30-88957T 30-88957...

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      • Sierra 18-0522 Drive Shaft Oil Seal
        $11.99
        $9.49

        Sierra 18-0522 Drive Shaft Oil Seal Sierra replacement drive shaft oil seal for use on Chrysler/Force/US Marine, Honda Outboard, and Mercury Marine engines. O.D.: 1.474" Shaft Size: 1.045" Width: 0.187" Interchangeable with: Chrysler/Force/US...

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      • Sierra 18-8382 Lower Unit Seal Kit
        $41.49
        $28.99

        Sierra 18-8382 Mercury Lower Unit Seal Kit Sierra replacement lower unit seal kit for Mercury Outboards. For: 225Hp EFI/250Hp EFI (G129222 & Up), 200Hp (T801000 & Up), 200Hp Optimax DFI (G386496 & Up) For: 225Hp Optimax DFI...

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      • Mercury - Mercruiser 26-816575A-3 Gear Housing Seal Kit
        $159.99
        $100.99

        Mercruiser 26-816575A-3 Alpha One Gen II Gear Housing Seal Kit Genuine OEM Mercury - Mercruiser part. Application: Alpha One (Gen II) 1998 & up - s/n 0L100040 & up Alpha One (Gen II) 1991 - 1995 - s/n 0D469859 thru 0F679999 Special Order...

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      • SEI Mercury Outboard 3.0L Repl Lower Unit 1.62 20"
        $1,670.52
        $1,392.10

        SEI 216 Mercury Outboard 3.0L Repl Lower Unit 1.62 20" Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number ready when calling. SE216, 1.62:1, 20"...

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      • SEI Mercury Outboard DFI Alpha Repl Lower Unit 2.31:1 20"
        $1,670.52
        $1,392.10

        SEI Mercury Outboard DFI Alpha Repl Lower Unit 2.31:1 20" Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number ready when calling. The SEI 205 is designed for use...

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      • SEI Mercury V6 Outboard Replacement Lower Unit 2:1, 25"
        $1,670.52
        $1,392.10

        Sterndrive Engineering Mercury V6 Outboard Replacement Lower Unit 2:1, 25" Driveshaft Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number ready when calling...

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      • Sierra 18-7198 O-Ring
        $2.49
        $1.99

        Sierra 18-7198 O-Ring Sierra high-quality engine parts are designed to meet OEM specifications. For use on Chrysler/Force/US Marine, Honda Outboards, Mercruiser Stern Drives, Mercury Marine and OMC Stern Drives. Package of 5. I.D.: 1.430" Width: 0...

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      • Mercury Automatic Transmission Fluid
        $15.99
        $9.99

        Mercury 8M0173229 Automatic Transmission Fluid Engineered for harsh marine environments. Specifically formulated and recommended for use in Mercury Outboards, MerCruiser Inboards, and Tow Sport transmissions requiring DexronIII fluid. Meets...

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      Mercury OEM Engine Parts Finder

      Mercury Outboard Gearcase & Drive Parts

      Have you ever gone to a big box store with a marine department and had the feeling that the sales clerk had no idea what you needed? Or thought that automotive and marine parts are interchangeable? That will never be the case when you shop at Wholesale Marine. We have whatever you need from the best brands in OEM and aftermarket manufacturers like Mercury, Quicksilver, Moeller, and Sierra to get you your Mercury outboard gearcase parts you require - from gearcase seal kits, o-rings and seals, propeller shafts, carrier bearings, gear sets, gearcase bearings, even replacement lower units, if your boat needs it, Wholesale Marine will have it all!

      We know that it can sometimes be difficult to locate which Mercury outboard gearcase parts you require. Know that at Wholesale Marine, you have two options: you or your marine technician can use Wholesale Marine’s Parts Selection Finder, or you can call and have a conversation with one of our knowledgeable staff. Whichever option you use to find the right part(s) you need, your Mercury outboard gearcase components will soon be on their way to you!

      When you need to upgrade or replace Mercury outboard gearcase-related components it does not matter if you are buying o-rings and seals, gearcase bearings, propeller shafts, or an entire Mercury outboard lower unit replacement- you’ll always receive great customer service from our staff. In addition to carrying the best brands, we offer a competitive pricing guarantee. We ship daily so you’ll have your parts before you know it. Returns are easy as well. If you are not already a regular Wholesale Marine customer, we’ll do our best to convince you to become one! After all, thousands of boat owners and marine technicians already make us their one-stop shopping destination for all their boating needs! Plan to give us a call soon. We’re here Monday through Friday from 8:30 AM until 4:30 PM EST at (877) 388-2628. Don’t forget to ask about our Captain’s Club Rewards program for extra savings the next time you shop at Wholesale Marine!