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Parts Selection Guide

Find the parts you need

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Prop Selection Guide

Find the right prop for your boat

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      Mercury Outboard Gearcase & Drive Parts

      • 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 18-7159 O-Ring
        $3.99
        $3.49

        Sierra 18-7159 O-Ring I.D.: 3.855" or 98mm Width: 0.210" or 5.3mm Interchangeable with: GLM 83440 Mallory 9-76544 Mercruiser Stern Drive 25-48451 25-31534 Mercury Marine 25-31534

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      • Sierra 18-7180 O-Ring
        $0.28
        $0.21

        Sierra 18-7180 O-Ring I.D.: 0.445" or 11.3mm Width: 0.090" or 2.4mm Interchangeable with: GLM 45030 Johnson/Evinrude Outboard 303347 Mallory 9-76556 Mercruiser Stern Drive 12-31060 25-8M2000926 25-26802 Mercury...

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      • SEI Mercury 4 Stroke 2.07:1 Replacement Lower unit
        $1,439.99
        $1,199.99

        SEI Mercury 4 Stroke 2.07:1 Replacement Lower unit 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 with 4...

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      • Sierra 18-1143 Tapered Roller Bearing
        $49.99
        $34.99

        Sierra - 8M0146566 Tapered Roller Bearing Fits: IA/IB/IC & EZ Shift, 120, 140, & 160, MR, Alpha One & Gen II (s/n 0K999999 & Below) Interchangeable with: GLM 21580 Mallory 9-75107 Mercruiser Stern...

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      • Sierra 18-7176 O-Ring
        $2.49
        $1.99

        Sierra 18-7176 O-Ring I.D.: 2.160" or 54.9mm Width: 0.100" or 2.54mm Interchangeable with: Chrysler/Force/US Marine 25-F74305 F694555 F74305-1 F74035 25-90011 GLM 81390 Mallory 9-76554 Mercruiser Stern...

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      • Mercury - Mercruiser 43-12635T Gear-Reverse - Generic Logo
        $116.99
        $101.99

        Mercury - Mercruiser 43-12635T Gear-Reverse Genuine OEM Mercury-Mercruiser part. Used with 3 jaw reverse clutch. Pinion/Forward gear assembly and seal or seal & bearing kit are also required. Fits: Mercury/Mariner 110/115/125 hp 2 Cyl. outboard...

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      • Mercury - Mercruiser 26-816575A-3 Gear Housing Seal Kit
        $110.99
        $92.49

        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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      • Sierra 18-2243 Detent Ball
        $4.99
        $3.99

        Sierra 18-2243 Detent Ball for V-4 & V-6 Gearcase Sierra high-quality engine parts are designed to meet OEM specifications. Interchangeable with: GLM 22490 Johnson/Evinrude Outboard 316506 OMC Stern Drive 316506

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      • Sierra 18-7162 O-Ring
        $2.99
        $1.99

        Sierra 18-7162 O-Ring I.D.: 2.025" or 51.4mm Width: 0.135" or 3.4mm Interchangeable with: Chrysler/Force/US Marine 25-33145 GLM 82260 Johnson/Evinrude Outboard 302337 Mallory 9-76547 Mercruiser Stern...

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      • Sierra 18-7171 O-Ring
        $2.99
        $1.99

        Sierra 18-7171 O-Ring I.D.: 1.920" Width: 0.100" Interchangeable with: GLM 81360 Mercruiser Stern Drive 25-30529 Mercury Marine 25-30529

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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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      • SEI Mercury Outboard DFI Alpha Repl Lower Unit 2.31:1 20"
        $1,439.99
        $1,199.99

        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...

        Add to Cart
      • Sierra 18-2299 Tab Washer
        $8.99
        $7.49

        Sierra 18-2299 Tab Washer Sierra high-quality engine parts are designed to meet OEM specifications. Fits MC-I & TRS engines. Interchangeable with: GLM 11380 Mallory 9-72641 Mercruiser Stern Drive 14-79447 14-52833 Mercury...

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      • Sierra 18-2697-1 Lower Unit Seal Kit
        $60.99
        $42.99

        Sierra 18-2697-1 Lower Unit Seal Kit Sierra replacement lower unit seal kit for Mercury Marine, Chrysler, and Force Outboards. Interchangeable with: Chrysler/Force/US Marine 26-41365A3 GLM 87576 Mallory 9-74210 Mercury...

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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!