ACL thrust washers are an often overlooked component of rebuilds. They prevent the crankshaft from moving around, thus keeping it in line with all of the other critical moving engine parts. It also helps the crankshaft to better stand up to stresses from clutch and flywheel operation.
Fitment- B16A, B17A, B18A, B18B, B18C1, B18C5, B20B, B20Z, B21A, D16A6, D16Y7, D16Y8, D16Z6, D17A, F20C, F22C, F23A, H22A4, K20A1, K20A2, K20A3, K20Z1, K20Z3, K20Z7, K24A1, K24A2, K24A3, K24A4, K24A6, K24A8