O-Ring Seal 3056415 Parts Number 3056415 Parts Name O-Ring Seal 3056415 Brand Cummins Cummins Models NH/NT 855, NT495, NT743, NTA855 N106 Related Posts Plain Hose 3016142 Exhaust Manifold Gasket 3043097 O-Ring Seal – 145592 Piston 3017348 Valve By Pass 3023512