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Yamaha Outboard Gearcase & Drive Parts

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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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      • Sierra 18-4698 Drain Fill Washer Replaces 27-81987
        Starting At: $1.99

        Sierra 18-4698 Yamaha & Mercury Drain Fill Washer Sierra high-quality engine parts are designed to meet OEM specifications. Use with 18-2374 Magnetic Drain Screw Interchangeable with: Mallory 9-60100 Mercury...

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      • SEI Yamaha V6 Outboard Replacement Lower Unit 1.86 25"
        List Price: $1,439.99
        Starting At: $1,199.99

        Sterndrive Engineering Yamaha V6 Outboard 2.6L Replacement Lower Unit 1.86:1, 25" Accidents happen and lower units can wear out over extended use which means at some point, a replacement outboard lower unit may be in your future.  Luckily,...

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      • SEI Yamaha V6 Outboard Replacement Lower Unit 2:1 20"
        List Price: $1,439.99
        Starting At: $1,199.99

        Sterndrive Engineering Yamaha V6 Outboard 2.6L Replacement Lower Unit 2:1, 20" Replacement lower unit for most Yamaha 90 degree V6 2.6L 2-stroke engines with 20" drive shaft. SE416 2:1 Gear ratio 20" Drive Shaft RH Rotation Includes Sterndrive...

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      • SEI Yamaha V6 Outboard Replacement Lower Unit 1.86 20"
        List Price: $1,439.99
        Starting At: $1,199.99

        Sterndrive Engineering Yamaha V6 Outboard 2.6L Replacement Lower Unit 1.86:1, 20" Replacement lower unit for most Yamaha 90 degree V6 2.6L 2-stroke engines with 20" drive shaft. SE416 1.86:1 Gear ratio 20" Drive Shaft RH Rotation Includes...

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      • Sierra 18-2794-1 Lower Unit Seal Kit Replaces6E5-W0001-F1-00
        List Price: $115.99
        Starting At: $80.99

        Sierra 18-2794-1 Lower Unit Seal Kit for Yamaha Outboards Sierra high-quality engine parts are designed to meet OEM specifications. Kit Includes 18-0244, Water Pump Gasket, Qty 1 18-4698, Drain or Fill Washer Gasket, Qty 2 18-0265, Oil Seal, Qty...

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      • SEI Yamaha 76° V6 1.81:1 Repl Lower Unit
        List Price: $1,439.99
        Starting At: $1,199.99

          SEI Yamaha 76° V6 2 Stroke 1.81:1 Repl 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. SE421, 1.81:1, 25"...

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      • Sierra 18-0021 Gear Housing Seal Kit
        List Price: $66.99
        Starting At: $46.99

        Sierra 18-0021 Yamaha Gear Housing Seal Kit Sierra high-quality engine parts are designed to meet OEM specifications. For use in Yamaha Outboards. Interchangeable with: Mallory 9-74502 Yamaha Outboard 688-W0001-22-00 688-W0001-21-00

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      • Sierra 18-0826 Plug
        List Price: $1.99
        Starting At: $1.49

        Sierra 18-0826 Yamaha Drain Screw Gasket Sierra replacement drain screw gasket for Yamaha Outboards. Use with: 18-2371 Drain Screw Interchangeable with: Yamaha Outboard 90430-14115-00

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      • Sierra 18-2082 Trim Seal
        List Price: $18.99
        Starting At: $13.49

        Sierra 18-2082 Trim Seal Sierra replacement trim seal for Yamaha Outboards. Interchangeable with: Yamaha Outboard 64E-4384J-00-00

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      • SEI Yamaha V6 4-Stroke Replacement Lower Unit 2:1, 20"
        List Price: $1,439.99
        Starting At: $1,199.99

        Sterndrive Engineering Yamaha V6 4-Stroke Outboard Replacement Lower Unit 2:1, 20" Replacement lower unit for most Yamaha 4-Stroke 150 HP engines with a 20" drive shaft. SE416 2:1 Gear ratio 20" Drive Shaft OE# 63P-45300-05-8D RH...

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      • SEI Yamaha 2 Stroke V4 Repl Lower Unit 2:1 20"
        List Price: $1,439.99
        Starting At: $1,199.99

        SEI Yamaha 2 Stroke V4 Repl Lower Unit 2:1 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. SE405, 2:1, 20" Driveshaft Standard...

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      • SEI Yamaha 76° V6 4 Stroke 25" 2:1 Repl Lower Unit
        List Price: $1,439.99
        Starting At: $1,199.99

        SEI Yamaha 76° V6 4 Stroke 25" 2:1 Repl 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. SE421, 2:1, 25"...

        Add to Cart
      • SEI Yamaha 90­° V6 Repl Lower Unit 2:1 25"
        List Price: $1,439.99
        Starting At: $1,199.99

        SEI Yamaha 90­° V6 Repl Lower Unit 2:1 25" Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number ready when calling. SE416, 2:1, 25" Driveshaft Standard...

        Add to Cart
      • Sierra 18-2787 Lower Unit Seal Kit
        List Price: $87.49
        Starting At: $60.99

        Sierra 18-2787 Lower Unit Seal Kit For use on Mercury/Mariner Outboard Engines, Japanese Models W48 w/S/N (670-) All, 55/W55 w/S/N (663-) All, 60 w/S/N (675-) All (6F0-) All - O.E. Kit # 27-92648M Kit Contains:  Drain or Fill Washer Gasket -...

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      • Sierra 18-2789 Lower Unit Seal Kit Replaces6J8-W0001-C2-00
        List Price: $48.99
        Starting At: $37.49

        Sierra 18-2789 Lower Unit Seal Kit Sierra replacement lower unit seal kit for Yamaha Outboards. Kit Includes: (1) 18-0292 Wear Plate to Pump Housing Gasket (1) 18-0294 Wear Plate to Pump Base Gasket (2) 18-0297 Oil Seal (1) 18-0298 O-Ring (2)...

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      • Yamaha F115/LF115 Gear Housing Seal Kit by Mallory
        List Price: $139.99
        Starting At: $65.99

        Yamaha F115/LF115 Gear Housing Seal Kit Replaces: Yamaha 68V-W0001-20-00 Fits: F115/LF115 2000-05     Mallory Marine Yamaha Lower Unit Seal Kits contain ONLY the highest quality parts needed to seal the lower unit

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      • Yamaha F200/LF200, F225/LF225 Gear Housing Seal Kit by Mallory
        List Price: $186.99
        Starting At: $87.99

        Yamaha F200/LF200, F225/LF225 Gear Housing Seal Kit Replaces: Yamaha 69J-W0001-20-00 Fits: F200/LF200 2002 F225/LF225 2002 Mallory Marine Yamaha Lower Unit Seal Kits contain ONLY the highest quality parts needed to seal the lower unit

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      • Yamaha F75/90, F80/F100 Gear Housing Seal Kit by Mallory
        List Price: $124.49
        Starting At: $58.49

        Yamaha F75/90, F80/F100 Gear Housing Seal Kit Replaces: Yamaha 67F-W0001-20-00 Fits: F75/90 (2003-05) F80/F100 (1999-02)   Mallory Marine Yamaha Lower Unit Seal Kits contain ONLY the highest quality parts needed to seal the lower unit

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      • Sierra 18-0587 Oil Seal
        List Price: $6.49
        Starting At: $4.99

        Sierra 18-0587 Oil Seal for Yamaha Outboards I.D.: 24mm O.D.: 40.25 mm Width: 6 mm Interchangeable with: Mallory 9-76414 Yamaha Outboard 93101-25M03-00

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      • SEI Yamaha 90­° V6 Repl Lower Unit 1.86:1 25" Counter
        List Price: $1,679.99
        Starting At: $1,399.99

        SEI Yamaha 90° V6 25" 1.86:1 Replacement Lower Unit - Counter Rotation Note for purchasing: You must verify your Gear Ratio. Call for application assistance if needed, and have your engine serial number ready when calling. SE418, 1...

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      Yamaha OEM Engine Parts Finder

      Yamaha Outboard Gearcases & Drive Parts

      Doing work on your outboard motor is vital, no matter how small the task may appear at first. This is due to how important your outboard motor is - one wrong move might cost you a small fortune in the long run. To avoid a potential catastrophe, take a look at the long line of Yamaha outboard lower unit parts to be absolutely certain you have what you need for the job. We carry durable, high-quality replacement parts for prop shafts, carrier bearings, drain fill washers, and other Yamaha outboard parts. You can find all the Yamaha outboard gear cases and repair kits, making Wholesale Marine your one-stop-shop for all your boating needs.

      Browse Yamaha Outboard Lower Unit Parts At Wholesale Marine

      Whatever you may need to work on next, whether it’s searching for Yamaha outboard parts gear cases, changing your oil, doing electrical wiring, painting your exterior, or anything in between, you can always rely on Wholesale Marine to carry and stock what you need. Need help finding the right part for your engine? Give our customer service team a call at 1-877-388-2628! They're available Monday to Friday, 9 AM to 4 PM EST.