Exhaust Manifold Headers Shorty for Ford Mustang GT & Cobra (1996–2004) 4.6L

High-Flow T304 Stainless Shorty Headers for Ford Mustang 4.6L

Replaces the restrictive factory cast-iron exhaust manifolds with mandrel-bent shorty headers to improve exhaust scavenging and lower engine bay temperatures.

The Stock Mustang Restrictive Airflow

The factory Ford Mustang 4.6L cast-iron exhaust manifolds are notoriously restrictive, plagued by rough internal casting flashes and sharp log-style bends. These manufacturing compromises create excessive exhaust backpressure and uneven cylinder scavenging. Under heavy load, the dense cast iron retains extreme heat, causing localized heat soak that degrades surrounding under-hood components and restricts the Modular V8's top-end horsepower potential.

The Engineering Solution

These shorty headers eliminate OEM flow restrictions using mandrel-bent T304 stainless steel tubing, ensuring rapid and smooth exhaust gas evacuation from the cylinder heads. The precision TIG-welded construction offers superior thermal resistance and prevents the structural cracking commonly seen in cheaper mild-steel alternatives. By optimizing the primary tube routing, these headers improve exhaust pulse scavenging, which directly translates to noticeable gains in torque, sharpened throttle response, and a deeper exhaust resonance. Designed as a direct bolt-on upgrade, they mate seamlessly to the factory exhaust system without requiring chassis modifications, utilizing the included metal gaskets for a reliable, leak-free seal.

Technical Specifications

Compatibility

• 1996–2004 Ford Mustang 4.6L V8 (GT Trim)
• 1996–2004 Ford Mustang 4.6L V8 (Cobra Trim)
• Note: Excludes some special editions; please verify specific model before purchase.

The Ford Muscle Standard

For modern American muscle, optimizing exhaust flow is non-negotiable for maximizing the Modular V8's powerband and achieving that signature aggressive exhaust note.