The bearings in your engine are a vital component that can make or break your next engine build. That's why we suggest King Engine Bearings. King offers this set of main bearings for the B16A, B17A, B18A, B18B, B18C1, B18C5, B20B, B20Z, K20A2, K20A3, K20Z1, K20Z3, K24A1, K24A2, K24A4, and K24A8 engines. The bearings are available in 3 sizes, STD (OE Spec), sTDX (0.005" Thinner), and +0.026 mm, and offered with the pMaxKote coating, which is designed to provide greater load capacity and more resistance to fatigue for a bearing that matches the rest of your high-performance engine build.