Gibson Stainless Performance Header

2003 Dodge Ram 2500 / Ram 3500

GP310S

Overview:

The Gibson Stainless Performance Header is engineered to enhance the exhaust flow of your 2003 Dodge Ram 2500 and Ram 3500, delivering improved horsepower and torque where it counts most—at low and mid-range RPMs. Designed as a direct replacement for the factory manifolds, this header optimizes your engine’s breathing efficiency, resulting in cooler operating temperatures and better overall performance. Whether you drive a lowered street truck or a raised off-road rig, this header is built to fit seamlessly and perform reliably.

Backed by Gibson’s commitment to quality and durability, this header is a smart upgrade for enthusiasts looking to maximize their truck’s power without compromising emissions compliance or factory warranty.

Key Features:

Every Gibson Performance Header is crafted with precision and includes features that ensure long-lasting performance and easy installation:

• Dyno-tuned design for increased usable horsepower and torque at highway speeds
• Direct replacement for factory manifolds using the stock crossover pipe
• Compatible with both lowered and raised vehicles, suitable for street and off-road use
• 50 State Street legal, meeting EPA and CARB requirements
• Maintains factory warranty with no welding or modifications required
• OEM style connections for a perfect fit and easy installation
• 3/8 inch heavy-duty laser cut port flanges prevent warping and leaks
• Includes premium gaskets and hardware for a complete installation
• Backed by a lifetime limited warranty for peace of mind

Construction & Design:

Constructed from high-quality stainless steel, the Gibson Performance Header is built to withstand the rigors of daily driving and demanding conditions. The use of 3/8 inch heavy-duty laser cut port flanges ensures a precise fit that resists warping and eliminates exhaust leaks, which are common issues with lesser quality headers. The stainless steel construction not only provides durability but also helps maintain cooler engine temperatures by improving exhaust gas flow. Designed with OEM style connections, this header integrates seamlessly with your truck’s existing exhaust system without requiring any welding or custom fabrication.

Performance & Sound

This header improves your engine’s ability to breathe, resulting in enhanced horsepower and torque delivery at low to mid-range RPMs, which is ideal for highway cruising and everyday driving. The improved exhaust flow also contributes to a cooler running engine, which can enhance longevity and reliability. While designed primarily for performance gains, the Gibson Stainless Performance Header also delivers a refined exhaust note that complements the aggressive character of the Dodge Ram 2500 and 3500 without excessive drone.

Installation & Fitment:

The Gibson Stainless Performance Header is designed for a straightforward, bolt-on installation using OEM style connections and the stock crossover pipe. No welding or cutting is required, making it a convenient upgrade for both professional installers and experienced DIY enthusiasts. This header fits the following 2003 Dodge Ram models:

• Dodge Ram 2500 Laramie
• Dodge Ram 2500 SLT
• Dodge Ram 2500 ST
• Dodge Ram 3500 Laramie
• Dodge Ram 3500 SLT

Its design accommodates both lowered and lifted trucks, ensuring versatility across various suspension setups.

What's Included:

• Gibson Stainless Performance Header
• Premium gaskets
• Installation hardware
• Lifetime limited warranty documentation

Ideal For:

This header is ideal for Dodge Ram 2500 and 3500 owners seeking a reliable, emissions-compliant performance upgrade that enhances power and torque without sacrificing factory warranty or requiring complex installation. It suits daily drivers, highway cruisers, and off-road enthusiasts who demand improved engine efficiency and durability.

Emissions Note

The Gibson Stainless Performance Header is 50 State Street legal and meets EPA and CARB emissions requirements, ensuring compliance with environmental regulations. Installation of this header will not affect your factory warranty, providing confidence in both performance and legality.

Gibson Performance Exhaust manufactures street-legal performance exhaust systems for trucks, SUVs, UTVs/side-by-sides, and muscle car applications. Known for an aggressive sound and bolt-on fitment, Gibson systems are engineered to improve exhaust flow while maintaining durability for daily driving, towing, and weekend fun.