PRODUCT DETAILS
Oversize Piston Kit – 82.25mm (+0.25mm)
Fits Yamaha 75HP, 80HP, 85HP, 90HP 3-Cylinder 2-Stroke Outboards
This complete set of three oversize pistons is designed for rebuilding Yamaha 3-cylinder 2-stroke outboards. Each piston is precision-machined to 82.25mm (+0.25mm oversize) and includes the required rings, pin, and clips for a proper install.
Includes (x3 Pistons):
• 3 x Oversize pistons (82.25mm)
• 3 x Ring sets
• 3 x Wrist pins
• 6 x Circlips
Fits Yamaha 2-Stroke Models (Approx. 1990 & Newer):
• 75HP
• 80HP
• 85HP
• 90HP
(3-cylinder)
⚠️ Not all variants of these models are compatible. Please contact us with your engine number if you’re unsure.
Replaces OEM Yamaha Part Numbers:
• 688-11635-03
• 6H1-11635-0300 (and variants)
⚓ Why Buy from SSI Marine?
• High-quality marine engine components in UK stock
• Same-day dispatch before 1PM
• Tracked shipping options
• Expert support from marine professionals
Rebuild your Yamaha with confidence — SSI Marine delivers reliable parts you can trust.
SHIPPING & DELIVERY
Delivery:
We offer free shipping on all orders over £150 (excluded outboard engines, trailers)
Standard Shipping - £ 8.50
Orders are typically shipped within 1 business day of receipt of payment. We ship via Royal Mail Tracked 24 delivery service. Delivery times vary depending on the delivery destination.
For engines delivery cost please ask for a quote.
It is the buyer's responsibility to ensure that the correct shipping address is supplied.
All item(s) will be despatched to the registered address.
Tracking your order:
Once your order has been shipped, you will receive a tracking number via email. You can track your order online using the tracking number provided.
Returns:
We accept returns of unused and undamaged items within 30 days of purchase.
To return an item please contact us for a return authorisation number. Return shipping costs are the responsibility of the customer.
Refunds:
Refunds will be issued for the purchase price of the item, less shipping costs. Refunds will be issued in the same form of payment as the initial purchase.
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