Audi 4.2L 32V BNS / CAU (B7 RS4, S5 4.2) Engine Rebuild Program

At AMTuned, our craft is engine building. Weather you are looking for a factory style rebuild, or want to shoot for the moon power wise, we know what it takes to get the job done. With years of sleeving these Audi hypereutectic blocks, we have perfected the craft of retaining a factory bore size no matter your power goal with our in house sleeving process utilizing our custom specification sleeves Customers now have a trusted source to get their 32v 4.2's rebuilt to extract new life out of them.  For customers looking for a rebuild on their R8 vehicle, please click HERE Not thrilled about removing your engine and reinstalling it? Contact us for a turn key rebuild solution. 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 sh