BMW N42 (B18A + B20AJ) and for BMW N46 (B18B + B20 + B20B). Title: Camshaft Engine Timing Tools. 1 X Fixing Screw | 1 X Camshaft Rotation Key. 1 X Fixing Strip Encoder Wheels | 1 X Clamping Tool. We specialize in automotive car parts and is the No.1 industry distributor for affordable and quality products.