Audi S4 B6 B7 4.2L 40V BHF BBK Engine Rebuild Program

The original and most trusted 4.2L 40V Chain Driven engine rebuild on the market. With nearly 100 successful rebuilds as of late 2023, we can confidently say we are a master at our craft! All of our rebuilds come with a final build sheet and many pictures of the process to keep for your records. Not knowledgeable in removing your engine and re-installing? Contact us for a turn key rebuild.  Customers must establish contact prior to shipping and purchase the desired engine rebuild stage in full before work begins. Shipping to or from our facility is not included. Local drop off and pick-up is available free of charge. Never shipped an engine? Let us help guide you through the process! We typically see shipping rates between $175-$500 one way within the continental United States. We do offer a 3% discount on all stage build options if customers desire to pay by check or bank-bank transfer options. Long blocks are to be delivered to us without accessories. Accessories include: Oil Filter