Cummins K38/QSK38 Upper Gasket Kit 3801720 Parts Catalogue Ref No. Part Name Part No. Required 1 Upper Engine Gasket Kit 3801720 1 2 Intake Manifold Gasket 206277 12 3 Turbocharger Gasket 3178988 2 4 Aftercooler Housing Gasket 3011580 4 5 Exhaust Manifold Gasket 3037821 12 6 Cylinder Head Gasket 3177412 12 Above is the introduction of the Cummins 3801720 …