Engine Rebuild Parts by Model | Yamaha Outboard

• Pistons and piston ring sets
• Main and connecting rod bearings
• Connecting rods and rod bolts
• Powerhead and engine gasket kits
• Oil seals and internal engine seals
• Cylinder sleeves
• Valves, valve seats, and valve springs
• Other model-specific internal powerhead components

Yamaha outboards with similar horsepower ratings can use different pistons, bearings, gaskets, rods, and other internal components depending on the engine family, displacement, model code, and production range.

Start by selecting the correct engine family above. Then compare your Yamaha model information and OEM part numbers with the individual product listings before ordering.

The exact parts required for a Yamaha powerhead rebuild depend on engine condition and measurements taken during teardown. Cylinder condition, crankshaft journals, bearing clearances, pistons, rings, connecting rods, valves, and sealing surfaces should be inspected before final parts are selected.

If cylinder machining is required, determine whether standard or oversize pistons, rings, or cylinder sleeves are needed before ordering internal engine components.

What parts are commonly replaced during a Yamaha outboard rebuild?

Depending on engine condition, a rebuild may require pistons, rings, main bearings, rod bearings, connecting rods, gaskets, seals, cylinder sleeves, valves, and other internal powerhead components.

Can I find Yamaha rebuild parts by horsepower?

Horsepower is a useful starting point, but it should not be the only fitment identifier. Yamaha engines with the same horsepower can use different parts depending on engine family, displacement, model, and production range.

Do you carry OEM and aftermarket Yamaha rebuild parts?

Pro Marine USA carries genuine Yamaha OEM parts along with quality OEM specification aftermarket replacement parts for many Yamaha outboard rebuild applications.

How do I identify the correct Yamaha part number?

Use your Yamaha engine model information with the OEM parts lookup to locate the factory diagram and original part number, then search that number on Pro Marine USA for available replacement options.

• All Yamaha Outboard Parts
• Yamaha OEM Parts Lookup
• OEM Schematics