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guidebook

Parts Selection Guide

Find the parts you need

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  • 2) Part Type:
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Prop Selection Guide

Find the right prop for your boat

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  • Engine Horsepower:
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Mercury Outboard Gearcase Seal Kit

Mercury Outboard O-Rings & Seals

Mercury Outboard Propeller Shafts

Mercury Outboard Carrier Bearings

Mercury Outboard Gear Sets

Mercury Outboard Gearcase Bearings

Mercury Outboard Replacement Lower Units

      Mercury Outboard Gearcase & Drive Parts

      • SEI Mercury Outboard 3.0L Replacement Lower Unit 1.75, 25"
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        SEI Mercury Outboard 3.0L Replacement Lower Unit 1.75 25"

        $1,439.99
        $1,199.99

        Sterndrive Engineering Mercury Outboard 3.0L Replacement Lower Unit 1.75:1, 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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      • SEI Mercury V6 Outboard Replacement Lower Unit 2:1, 20"
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        SEI Mercury V6 Outboard Replacement Lower Unit 2:1 20"

        $1,439.99
        $1,199.99

        Sterndrive Engineering Mercury V6 Outboard Replacement Lower Unit 2:1, 20" 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 18-1117 Pinion Bearing
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        Sierra 18-1117 Pinion Bearing

        $53.99
        $37.99

        Sierra 18-1117 Lower Unit Pinion Bearing Sierra high-quality engine parts are designed to meet OEM specifications. For use on Chrysler/Force/US Marine, Johnson/Evinrude Outboards, Mercruiser Stern Drives, Mercury Marine and OMC Stern Drives. Fits MR,...

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      • Sierra 18-7160 O-Ring
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        Sierra 18-7160 O-Ring

        $0.89
        $0.67

        Sierra 18-7160 O-Ring I.D.: 2.635" or 67mm Width: 0.210" or 5.3mm Interchangeable with: GLM 83340 Mallory 9-76545 Mercruiser Stern Drive 25-31986 Mercury Marine 25-31986 Superseded to 18-7160-9

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      • Sierra 18-2430-9 Gasket Drain Screw (Priced Per Pkg Of 5)
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        Sierra 18-2430-9 Gasket Drain Screw (Priced Per Pkg Of 5)

        $17.99
        $13.49

        Sierra 18-2430-9 Gasket Drain Screw (Pkg Of 5) Used with: 3/8-16 drain/fill screw found on all MerCruiser and most Mercury/Mariner O/B gearcases Rubber coated, stainless steel washer Forms a tear resistant gearcase drain screw seal Package of...

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      • Sierra 18-2635 Lower Unit Seal Kit Replaces 26-814669A2
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        Sierra 18-2635 Lower Unit Seal Kit Replaces 26-814669A2

        $62.99
        $43.99

        Lower Unit Seal Kit for Chrysler, Force Kit Includes: Sie-18-0500 Seal Sie-18-0622 Gasket,Lower Wear Plate Sie-18-2051 Seal Sie-18-2052 Seal Sie-18-2945 Washer Sie-18-7168 O-Ring Sie-18-7173 O-Ring Sie-18-7950 O-Ring   Replaces: Mercury -...

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      • Sierra 18-7173 O-Ring
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        Sierra 18-7173 O-Ring

        $2.49
        $1.99

        Sierra 18-7173 O-Ring I.D.: 1.875" or 47.6mm Width: 0.135" or 3.4mm Fits MCM/MIE GM V-6 & V-8 engine, for thermostat housing with flat cover plate Interchangeable with: Chrysler/Force/US Marine 25-30224 GLM 82250 Johnson/Evinrude Outboard ...

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      • SEI Mercury 2 Stroke 2.33:1 20" Replacement Lower unit
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        SEI Mercury 2 Stroke 2.33:1 20" Replacement Lower unit

        $1,439.99
        $1,199.99

        SEI Mercury 2 Stroke 2.33:1 20" 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...

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      • Sierra 18-2370 Carrier Bearing
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        Sierra 18-2370 Carrier Bearing

        $216.49
        $151.49

        Sierra 18-2370 Carrier Bearing Sierra replacement carrier bearing for Mercury Marine, and Chrysler/Force/US Marine engines. Interchangeable with: Chrysler/Force/US Marine 19291A3 Mallory 9-72600 Mercury...

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      • Sierra 18-0681 Washer
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        Sierra 18-0681 Washer

        $8.99
        $7.99

        Sierra 18-0681 Washer Sierra high-quality engine parts are designed to meet OEM specifications. Interchangeable with: Chrysler/Force/US Marine 12-934161 12-93416 GLM 30020 Mercruiser Stern Drive 12-32834 12-8M2001219 Mercury...

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      • Sierra 18-7158 O-Ring Replaces 25-30613
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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 18-3719 Pinion Nut Replaces 11-35921
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        Sierra 18-3719 Pinion Nut Replaces 11-35921

        $4.99
        $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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      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!