Exhaust Manifold Gasket 3020943 Parts Number 3020943 Parts Name Exhaust Manifold Gasket 3020943 Brand Cummins Cummins Models NH/NT 855, NT495, NT743, NTA855 N106 Related Posts Plain Hose 3016142 Lub oil Pump C4941464 Piston 3017348 Valve By Pass 3023512 Guide Valvle 3006456