THESE HIGH QUALITY MADE PISTONS ARE FOR STANDARD BORE FOR THESE ONAN ENGINES, B43, B48, P216, P218, P220, BORE 3.250 STANDARD BORE, THESE PISTONS ARE THE SAME WEIGHT AS THE OEM ONAN PISTON 

NOTE: THESE HIGH QUALITY MADE PISTON KITS ARE NOT MADE IN TAIWAN OR CHINA

SHIPS FROM USA WITH A TRACKING NUMBER