Audi 2.5L Diesel Crankshaft Bolt

This is a highly engineered and meticulously crafted M18 bolt for those building a high horsepower stroker engine out of their old 5-cylinder.

This bolt will ONLY fit the diesel crankshafts as the threads are deeply recessed into the crankshaft.  These will not work for your 2.5L eurovan gas engines.

The bolt is made from 8740 chromoly-steel.  The threads are form rolled, NOT cut.  Bolts are then heat treated to a very specific rockwell hardness and tested.  Finally, they are zinc plated for corrosion resistance.

These bolts are reusable and do not lose their strength.  These were purposed designed for maximum safety and reliability regardless of torque and horsepower levels.

You will not find something stronger than this out there.