Cummins 4BTA3.9 genuine engine parts, DCEC 4BTA3.9 genuine engine parts, DCEC 4BTA3.9 engine parts, Cummins 4BTA3.9 parts,DCEC No. Product name Part No. Unit Qty. Origin 1 Head, Gasket 3921393 pc 1 DCEC 2 Sleeve, salvage 3904166 pc 4 DCEC 3 Piston 3907163 pc 4 DCEC 4 Piston 3907158 pc 4 DCEC 5 Pistion 3926631 …