Compression Piston Ring 3056429 Parts Number 3056429 Parts Name Compression Piston Ring 3056429 Brand Cummins Cummins Models NH/NT 855, NT495, NT743 Related Posts Plain Hose 3016142 Piston 3017348 Valve By Pass 3023512 Guide Valvle 3006456 Lower Engine Gasket kit 4915303