Revive the performance of your 04-06 Chevrolet 6.6L V8 Duramax with the Enginetech RMC403AP Premium Re-Ring Kit. This premium kit delivers top-tier components for a reliable engine overhaul. Includes premium piston rings (S40568), rod bearings (BB145J), main bearings (BC204J), lower gasket set (GM403CS-B), head gasket set (GM403HS-D), cylinder head gaskets (HC403L-B, HC403R-B), and thrust washer (TW204). 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.