This standard piston ring kit is a reliable aftermarket spare part compatible with OEM PN 66T-11631-01-93. It fits Yamaha E40MLHW-REV two-stroke outboard motors built in 1998 with an 80mm standard cylinder bore. Precision machining delivers effective sealing within cylinder bores. Durable alloy material withstands long marine operation and minimizes gas blow-by. All dimensions follow OEM standards for easy installation. This ring set recovers sufficient compression and maintains stable power output on the 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



1 years
China