Complete Standard Piston Rings set with Rod and Main Bearing sets compatible with 1999-2015 Chevy GM 4.8L & 5.3L LS engines 3.78" Bore diameter. Fitment includes 4.8L 1999-2015 VINs A, C, V, O, 7, 4 and 5.3L 1999-2013 LC9, LS4 VINs 0, 3, 4, B, C, J, L, M, P, T, Z. Vin refers to the 8th character in the vehicles ID in lower driver side dash. For 100 years and counting, Hastings Company has been a world power in piston ring engineering and manufacturing.