Cat-Back Exhaust Kit - 99-04 Mustang 4.6L

The FLOWMASTER Cat-Back Exhaust Kit for 99-04 Mustang 4.6L is designed for automotive enthusiasts looking to enhance their vehicle's performance. This exhaust system is engineered to provide measurable gains in horsepower, torque, and throttle response while maintaining reliability. It is a perfect upgrade for those with naturally aspirated 4.6L modular engine builds.

This bolt-on system replaces the factory exhaust from the catalytic converter back, featuring mandrel-bent aluminized steel tubing and a stainless steel muffler design. The construction resists corrosion and produces a deep, aggressive tone without drone on the highway. FLOWMASTER's patented scavenging technology optimizes exhaust gas velocity to maximize power while minimizing turbulence and backpressure.

Ideal for 1999–2004 Mustang owners with 4.6L single-overhead-cam or two-overhead-cam engines, this cat-back system allows for straightforward installation without cutting or welding. Both professional mechanics and DIY builders will appreciate its compatibility with other modifications, such as intake upgrades and fuel system changes, making it a versatile choice for enhancing vehicle performance.