Cummins 3803263 Engine Piston

The Cummins 3803263 piston is a critical internal engine component designed for the K19 series heavy duty diesel engines. It features a composite aluminum alloy construction with a nickel-iron insert for the top ring groove to withstand high thermal and mechanical loads. The piston assembly includes the piston crown, skirt, pin, and retaining rings. It is engineered to maintain precise clearance and compression ratios essential for optimal fuel combustion and emissions compliance in industrial and on-highway applications. This part replaces OEM reference 3803263 and is compatible with engine models K19, K38, K50, K1150, and K2300 series.