PRODUCT HIGHLIGHTSHeatspin high-quality aluminum alloy piston set is tailor-made for Isuzu 4HJ1 four-cylinder diesel engines with 115mm bore diameter, featuring outstanding heat resistance and structural rigidity against long-term heavy-load vehicle operation. Processed with micron-level CNC precision machining and matched OEM part number 8-97228-302-0, it maintains ideal fit clearance with cylinder liners to prevent gas blow-by and stabilize engine compression efficiency.