aFe MACH Force-Xp 3 IN to 2-1/2 IN Stainless Steel Cat-Back Exhaust System Black (49-36418-B) 1527 we learned a great deal

we learned a great deal about aluminum casting

These headers retain your stock catalytic converters and factory O2 sensor locations for a direct bolt-on installation that requires no cutting or modifications

Diameter: 12 mm

Compatible with OEM part numbers: 21306-AM606

5 2003 Subaru Impreza Engine: 2

aFe MACH Force-Xp 3 IN to 2-1/2 IN Stainless Steel Cat-Back Exhaust System Black (49-36418-B) 1527 we learned a great dealGet increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Mach Force XP Axle Back Exhaust System. aFe dyno tests every system for maximum gains, and constructs them from mandrel bent stainless steel for maximum flow and long lasting durability. Features: Increases horsepower and torque Improves performance Lowers exhaust gas temperature Flow bench and dyno tested Welded hangers with