Cast Piston Kit

Standard Bore Size is 2.953″

Fits:

Mariner

40hp 1979-90 (2-cylinder models)

Yamaha

40hp 1979-90(2-cylinder models)
C40 1990-97 (2-cylinder models)

To order, select your desired options, then enter the quantity and click “add to cart”. Most standard and oversize pistons are in stock however some sizes may be on a short backorder from time to time. Please don’t hesitate to contact us for assistance.

Replaces: 6E9-11631-00-96, 6E9116310096, 761-8563M, 6E9-11636-00-00, 6E9116360000, 761-8565M, 761-8565T