Genuine OEM Audi Crankshaft Connecting Rod Bolt, part number 077105425B. This specialized bolt plays a vital role in the engine's rotating assembly, securely fastening the connecting rod to the crankshaft. Its precise design ensures the integrity of this high-stress connection, which is critical for transferring power from the pistons to the crankshaft. Made from high-strength steel, it weighs approximately 0.029 kg. Using a genuine OEM connecting rod bolt guarantees the correct material properties, thread pitch, and torque-to-yield specifications, which are paramount for engine safety and longevity.