STD Outboard Motor Parts Piston kit for YAMAHA 40HP 66T-11631-01-93

This standard piston kit serves as reliable aftermarket marine spare parts compatible with OEM PN 66T-11631-01-93. It is designed for Yamaha 40HP two-stroke outboard motors equipped with an 80mm standard cylinder bore. Precision machining creates proper working clearance within cylinder bores. Wear-resistant alloy withstands continuous marine operation and reduces gas blow-by. All dimensions follow OEM standards for simple installation. This piston assembly recovers adequate compression and sustains steady power output on water.

This is a brand new piston set (STD size) For Yamaha Outboard Motor ,And also for Parsun,Hidea,Seapro,Hangkai,HDX etc 2 strok 40HP ,E40X series.

Ref. Part No: 66T-11631-00

Piston Diameter: 80mm / 3.149in

Wrist Pin: 20mm / 0.787in

It used on:

for Yamaha 40HP E40MH 40X outboard engine

E40MLHW-REV - 1998 E40MLHX - 1999 E40MLHY - 2000 E40MLHZ - 2001---up

Parsun 40HP E40MH 40X boat motor