Porsche Exhaust Muffler - 911 09-12 999-701-780-40 ARP's head studs are proven

ARP's head studs are proven and tested for a lifetime of reliability and performance and are required for use with Nickies cylinders

Custom Fit: Precision-engineered to perfectly fit your Porsche's rear indicator lights

911 Turbo Carrera (1977) (2nd Gear) and 930 (1978-1979) (2nd Gear) models

upgraded support flange

Porsche Exhaust Muffler - 911 09-12 999-701-780-40 ARP's head studs are provenExhaust Muffler (Cylinder 1 3) For Porsche 997 (2009 2012) Models.. Porsche Increase your vehicle's performance with our high quality Exhaust Muffler (Cylinder 1 3). Designed for 09 12 Porsche 911, our muffler improves exhaust flow and decreases back pressure, resulting in better engine response, more power, and improved fuel efficiency. Upgrade your ride today!