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New Aftermarket Yamaha 90 HP 3-CYL Lower Unit Rebuild Kit [1988-2006]

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YA 90
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* Engine Model Number:

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 Product Description

Featuring all the parts needed to effectively rebuild an outboard gearcase in one convenient package, our lower unit rebuild packages offer a combination of aftermarket kits, bearings, gears, and seals, all complete with a one-year limited warranty. In addition to the parts detailed below, please contact us at obparts+cs@gmail.com or fill out the form below if you need any other parts to get your motor running again.

This rebuild kit, designed for a Yamaha 90 HP 2-Stroke 3-Cylinder, will fit models from 1988 to 2006. It includes the following items:

2-Stroke Gear Set [Replaces OEM # 688-45560-00, 688-45551-01, and 6H1-45571-01]


Clutch Dog [Replaces OEM # 6H1-45631-01-00]


Clutch Dog Spring [Replaces OEM# 688-45633-00-00] 


Water Pump Kit [Replaces OEM # 692-W0078-01-00]


Seal Kit [Replaces OEM # 688-W0001-20-00]


Bearing Kit [OEM Replacement #s in Parentheses] [Includes Reverse Gear Bearing (93306-207U0-00), Aft Carrier Bearing (93317-325U0-00), Upper Driveshaft Bearing (93332-000U3-00), Outer Forward Gear Bearing (93332-000W7-00), and Pinion Bearing (93315-325V1-00)]


Additionally, other items for this lower unit are available for separate order if needed. Please email or fill out the form below to request.

This item qualifies for Free Shipping in the Lower 48. Increased fees will apply for Alaska, Hawaii, US Territories, and International Shipping. Shipments to Kentucky will be charged a 6% KY sales tax.

If you have any questions, please contact us through e-mail at obparts+cs@gmail.com. Please provide your engine model number to help confirm compatibility.

Didn't find the Outboard Part you needed?  We have many additional parts in our warehouse.  Please contact us directly to let us do a custom search for the part you need. 

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