Revive the performance of your 96-99 Chevrolet 3.1L/189 V6 VIN M with the Enginetech RMC189CP Premium Re-Ring Kit. This premium kit delivers top-tier components for a reliable engine overhaul. Includes premium piston rings (S89186), rod bearings (BB285J), main bearings (BC412J), and full gasket set (C3.1-64). Free shipping included. Note: Kit photo is generic; actual parts shown individually. Rod and Main bearings are offered as the same size. Contact us for different sizes.