Audi rs6 V8 super performance cylinder heads (left and right). The heads are chemically cleaned and tested for cracks. The heads are with large performance intake valves with 28.5mm diameter or +1.5mm (stock intake valves is 27mm) The exhaust valves are cleaned and polished. Intake and exhaust ports is fully ported and polished. Valve guides with new shape for maximum efficiency. The head is ready to installation. This cylinder head is made by a motor sport professional. The item "Audi C5 RS6 4.2 V8 077103373BH PORTED GASFLOWED PERFORMANCE CYLINDER HEADS" is in sale since Tuesday, November 16, 2021. This item is in the category "eBay Motors\Parts & Accessories\Performance & Racing…