King Engine Bearings Audi/VW Adz/Awt/Apk/Bhp/Bpy/Aks (Size +0.25mm) Main Bearing Set

This main bearing set from King Engine Bearings is built to a 0.25mm undersize, meaning it's intended for crankshafts that have been machined down by that amount during a rebuild. These bearings are specifically made for a range of Audi and VW engines, including those with Adz, Awt, Apk, Bhp, Bpy, and Aks engine codes. When you're rebuilding an engine, the main bearings are critical for supporting the crankshaft and ensuring it spins smoothly within the block. Using bearings that are the correct size and well-made is key to a long-lasting engine rebuild.

King Engine Bearings uses a specialized overlay material that's designed to handle the pressures and friction found in an engine's bottom end. This overlay helps to protect the bearing surface and the crankshaft journal from wear, especially during the critical break-in period. The 0.25mm undersize specification means these are meant for a specific stage of engine repair, often after a crankshaft has been ground down to remove damage or out-of-roundness. Proper installation, including ensuring the crankshaft journals are clean and within the specified tolerances for this bearing size, is essential for optimal performance and durability.