King main bearings for Audi & Volkswagen ADZ, AKS, APK, AWT, BHP and BPY engines where the crankshaft has been ground 0.25 millimetres undersize. This is an undersize bearing set and should only be used if the crankshaft has been machined to the correct size. It is not the right choice for a standard crankshaft.
King bearings are often used for engine rebuilds, tuning and performance builds where strong and precise bearings are required for the engine’s crankshaft. Correct bearing size is essential for oil pressure, durability and reliability.
Always check crankshaft dimensions and bearing clearance before installation. Incorrect bearing size can cause serious engine damage.