Cummins 3017348 Piston Assembly

The Cummins 3017348 piston assembly is engineered for NT855, NTA855, and N14 series 14.0L inline six-cylinder diesel engines. Constructed from high-strength aluminum alloy with a barrel profile skirt and solid crown (non-piston cooled), it incorporates a 4-ring pack configuration (three compression, one oil control) and operates at a 15.0:1 compression ratio. The piston bore diameter is 139.7mm (5.50 in). This component supersedes Cummins OE part numbers 3095755, 3048808, 4914563, 3408808, and 4913782. It serves as a direct replacement in heavy-duty applications including construction machinery, commercial trucks, marine propulsion, and generator sets. Cross-references include PAI 111104 and kit assembly 3801057.