WSM Yamaha 40/50 HP Piston Kit ’89-’08 – OE 6H4-11631-01-95 & 100-252k STD Size

Rebuilding that Yamaha outboard?

You're gonna need this piston kit right here.

It's designed specifically for Yamaha 40 and 50 HP motors made between 1989 and 2008.

This is a brand new, standard size (STD) piston, so it's perfect for a fresh bore or if your cylinder is still in good shape.

The manufacturer part numbers are 100-252k and the OE Yamaha number is 6H4-11631-01-95, so you know it's the right fit.

Whether you've got a 40 HP or a 50 HP, this kit is a solid, direct replacement to get your engine purring again.

It comes in its original packaging, ready to be installed and get you back on the water.