Cummins C4991300 Piston Assembly

Technical engineering specifications for Cummins part number C4991300 piston assembly designed for 6CT 8.3L diesel engines. This component utilizes high-silicon aluminum alloy with nickel-plated piston pin bore and anodized crown for thermal resistance. The piston incorporates an oil cooling gallery for controlled thermal expansion and reduced emissions. Compatible with Cummins 6CT series engines rated at 260 HP commonly found in Dongfeng Tianlong heavy duty trucks and construction equipment. Precision machined to OEM tolerances for ring groove geometry and skirt profile ensuring optimal oil control and scuff resistance. Supplied with piston pin and retainer clips. Cross references Cummins casting number C5255218.