Click to zoom in
This Gibson Headers GP312S replace factory manifolds on 2004-2005 Dodge Ram 1500 SRT-10 8.3L V10 engines with mandrel-bent 1-1/2-inch 16-gauge stainless steel primaries. Dyno-tuned for increased horsepower and torque at low and mid-range RPM highway speeds these headers improve exhaust flow engine breathing and reduce operating temperatures. Direct bolt-on design uses stock crossover pipe for easy install on street or off-road vehicles.
Key Features
- Improved Exhaust Flow: Larger primaries enhance engine breathing for quicker throttle response and lower exhaust gas temperatures.
- Heavy-Duty Build: T304 16-gauge stainless steel tubing 3/8-inch thick laser-cut port flanges eliminate warping leaks and corrosion.
- Dyno-Tuned Engineering: Tested to produce more usable horsepower and torque exactly where needed for everyday driving and towing.
- Direct Replacement Design: Bolts to factory locations retains stock crossover pipe no welding or cutting required OEM-style connections.
- T304 stainless steel 16-gauge wall 1-1/2-inch primary tubes 2-1/2-inch collectors mandrel bent for smooth flow.
- Bolts directly to factory exhaust mid-pipe and head ports.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2004-2005 | Ram | 1500 | SRT-10, 8.3L |
Specifications
| Manufacturer | Gibson |
|---|---|
| Manufacturer Part Number | GP312S |
| Product Type | Headers &, Manifolds |
| Fitment Type | Vehicle specific |
| Tubing Diameter | 1.50-in. Stainless 16-gauge mandrel bent tubing. |
| Header Features | Short Tube Style Header, Direct Fit, Bolt-On, Heavy duty laser cut flanges, Premium gaskets and all hardware included, No Welding, Attaches to the OEM crossover pipe |
| Footnote | Emission Compliant Carb EO# D-411-12 |
| Warranty | Lifetime Limited Warranty |
What's Included
- One new Gibson headers &, manifolds in the exact configuration identified by manufacturer part number GP312S
- Hardware and accessories only when supplied for this exact part number
About Gibson
Gibson develops vehicle-specific and universal exhaust components for street, truck, SUV, and performance applications. Selection and installation requirements remain exact-part-number specific.
Related Gibson Products
- Gibson 02-03 Dodge Ram 1500 SLT 4.7L 1-1/2in 16 Gauge Performance Header - Stainless
- Gibson 02-05 Cadillac Escalade Base 5.3L 1-1/2in 16 Gauge Performance Header - Stainless
- Gibson 03-08 Dodge Ram 1500 SLT 5.7L 1-1/2in 16 Gauge Performance Header - Ceramic Coated
Browse the Gibson collection for related exhaust systems and components.
Frequently Asked Questions
Which vehicles fit Gibson GIBGP312S?
Gibson GIBGP312S is listed for 2004-2005 Ram 1500. Confirm the exact engine, trim, drivetrain, body or cab configuration, exhaust layout, and every application note before ordering.
What should I verify before ordering Gibson GIBGP312S?
Match the exact part number, system type, material, finish, tubing and connection diameters, exhaust configuration, package contents, and current manufacturer notes shown in this listing.
What should be checked when installing Gibson GIBGP312S?
Verify all interfaces, hanger positions, tip and body clearances, clamp or fastener torque, leak-free operation, and local emissions requirements. Reinspect the system after its first heat cycle.
Installation Instructions
Follow the current Gibson instructions and vehicle service information for this exact part number. Work on a cool exhaust, support the vehicle safely, confirm all interfaces and clearances, align the system before final tightening, test for leaks, and inspect the installation again after the first heat cycle.
Exhaust Systems
Shop performance exhaust systems, cat-backs, axle-backs, headers, mufflers, and exhaust tips at Black Ops Auto Works. Compare options from Borla, CORSA, Solo Performance, AWE, MagnaFlow, MBRP, Kooks, Akrapovic, Invidia, and other brands. Find complete systems and individual components for muscle cars, performance SUVs, trucks, imports, and European vehicles. Cat-Back and Axle-Back Exhaust Systems Choose the exhaust section that matches your project. Cat-back systems generally replace the exhaust downstream of the catalytic converter, while axle-back systems replace the rear section. Exact connection points and package contents vary by vehicle. Compare muffler design, pipe diameter, exit location, tip configuration, and compatibility with existing exhaust components. Exhaust for HEMI, SRT, Trackhawk, and Hellcat Vehicles This collection includes exhaust options for selected Jeep Grand Cherokee SRT and Trackhawk, Dodge Durango SRT and Hellcat, Dodge Charger, Chrysler 300, and Ram appl...
View Exhaust Systems Products
Gibson
Shop Gibson Performance Exhaust cat-back systems, axle-back systems, mufflers, tips, headers, and installation components at Black Ops Auto Works. Compare vehicle-specific exhaust packages and universal components by application, material, pipe layout, and manufacturer part number. Gibson Cat-Back Exhaust SystemsThe collection includes selected Single, Dual Sport, Dual Split, Dual Extreme, and Super Truck configurations for supported trucks, SUVs, and other vehicles. These names identify different exhaust arrangements, with application-specific pipe routing and exit locations.Match model year, engine, drivetrain, wheelbase, cab, and bed or body length. An extended-wheelbase SUV or pickup can require a different system from another version of the same model. Check factory exhaust connections, bumper openings, spare-tire space, and any hitch or suspension changes. Stainless, Aluminized, and Black Elite OptionsGibson listings include specified stainless-steel and aluminized constructio...
View Gibson Products
Headers & Manifolds
Performance headers and exhaust manifolds for gas and diesel platforms are stocked at Black Ops Auto Works. Shop long-tube headers, shorty headers, turbo manifolds, and diesel exhaust manifolds for Mustang, Camaro, Ram HEMI trucks, Ford Powerstroke, Dodge Cummins, and GM Duramax platforms. Every product is filterable by tube diameter, header length, and vehicle year, make, model, and engine so the correct fitment ships the first time. Black Ops Auto Works carries 459 header and manifold SKUs across gas and diesel applications. What This Category Covers Performance headers and exhaust manifolds are among the most effective bolt-on upgrades for improving exhaust scavenging, increasing horsepower, and giving your engine a more aggressive exhaust note. Whether you are building a street machine, a track car, or a diesel work truck, the right header or manifold set unlocks real performance gains across the RPM range. Long-Tube Versus Shorty Headers Long-tube headers route exhaust prim...
View Headers & Manifolds Products