Revive the performance of your 1990-1994 Chevrolet 3.1L/189 OHV V6 with the Enginetech MKC189DP Premium Master Engine Rebuild Kit. This premium kit delivers top-tier components for a complete engine overhaul. Includes premium pistons and rings (P1584(6), M89166), rod bearings (BB285J), main bearings (BC412J), cam bearings (CC404B), lower gasket set (C189CS-B), head gasket set (C189HS-D), oil pump (EPK110), camshaft (ES1539), valve lifters (L2095-4 x3), expansion plug kit (PK71), and timing set (TS372). Verify fitment for your vehicle and view photos for further fitment information; contact us with any questions. Note: Kit photo is generic; actual parts shown individually. Rod and Main bearings are offered as the same size. Contact us for different sizes.