Exhaust Header for Mitsubishi Eclipse (1995-1999) 2.0L

High-Flow T-304 Stainless Steel Exhaust Header for 1995-1999 Mitsubishi Eclipse

What it Does: The Performance Exhaust Header replaces the restrictive factory cast-iron exhaust manifold on the 1995-1999 Mitsubishi Eclipse 2.0L to accelerate scavenging efficiency, reduce backpressure, and improve midrange throttle response.

The Stock Mitsubishi Eclipse Exhaust Restriction and Cracking

Factory naturally aspirated D31A chassis models equipped with the 2.0L Chrysler 420A engine utilize a thick, cast-iron exhaust manifold plagued by unequal runner lengths and uneven wall friction. Over prolonged thermal cycling, these OEM cast units are prone to heat fatigue, hairline cracking, and localized thermal retention around cylinder number three. Furthermore, the cramped, rough internal casting walls produce turbulent exhaust reversion, preventing clean cylinder evacuation during valve overlap and stifling top-end volumetric efficiency.

The Engineering Solution

Engineered to eliminate internal turbulence, this performance tubular manifold features mandrel-bent T-304 stainless steel runners configured in an optimal primary geometry for superior pulse scavenging. Smooth transitions into a merged collector dramatically lower backpressure while maintaining high exhaust gas velocity (EGV). Precision TIG welding prevents thermal stress fracturing under aggressive load, while heavy-duty, CNC-machined mounting flanges resist warping against the aluminum cylinder head to eradicate exhaust gas leaks. The kit includes pre-welded oxygen sensor bungs and mounting hardware for a straightforward bolt-on installation.

Technical Specifications

Compatibility

• 1995-1999 Mitsubishi Eclipse Base 2.0L L4 Non-Turbo
• 1995-1999 Mitsubishi Eclipse RS 2.0L L4 Non-Turbo
• 1995-1999 Mitsubishi Eclipse GS 2.0L L4 Non-Turbo

Frequently Asked Questions

Does this fit the D31A Eclipse?
Yes, this is a direct fit for the 1995-1999 Mitsubishi Eclipse equipped with the 2.0L naturally aspirated 420A engine.

Will this exhaust header throw a Check Engine Light (CEL)?
No, the manifold retains proper upstream oxygen sensor bung placement to maintain factory air-fuel readings without triggering secondary O2 catalyst diagnostic codes.

The Mitsubishi Performance Caliber

Unlock the signature rev-happy exhaust note and mechanical efficiency inherent to your second-generation platform. Constructed for thermal resistance, consistent flow, and direct bolt-on alignment, this header delivers long-lasting power gains without compromising engine bay packaging.