ACL Race Main Bearings Mitsubishi 4G3*Designed to withstand high RPM temperatures and load these high strength bearings are manufactured by ACL from 3 layers of hardened steel copper and nickel. This "trimetal" composition substantially lowers friction and thus reduces the operating temperatures while providing superior lubrication.These bearings are sold in complete sets (for a complete engine).If you require non-standard grade bearings or HX references or are performing an engine rebuild feel free to contact us for a detailed quote - we stock many internal parts and can provide most required for complete engine repair.Compatibility models and engine codes : Mitsubishi 4G30/31/32/33/35/36/37 - 1.2L 1.3L 1.4L 1.5L 1.6L 1.7L 1.8L