Exhaust Manifold

2010-2018 Dodge Ram 2500 & 3500 6.7L Cummins Performance Exhaust Manifolds

Eliminate performance-robbing exhaust leaks, maximize thermal energy retention to quicken turbocharger spool-up, and protect your cylinder head from structural damage with premium 2010–2018 6.7L Cummins 4th Gen exhaust manifolds from Full Force Diesel. The factory exhaust manifold on a 4th Generation Ram HD truck is a critical mechanical vulnerability. Due to extreme heat-cycling under heavy towing or high-performance demands, the stock cast iron manifold is prone to shrinking and warping. This distortion exerts massive leverage against your factory hardware, frequently snapping the exhaust manifold studs off flush inside the cylinder head. Upgrading to an engineered aftermarket manifold solves this design flaw while dramatically smoothing out exhaust flow.

Advanced Metallurgy: Overcoming Factory Shrinkage and Cracking

Aftermarket exhaust manifolds eliminate the structural vulnerabilities of the stock setup through superior material engineering and casting architecture:

• High-Silicon Ductile Iron Construction: Performance manifolds are cast from high-silicon ductile iron or specialized multi-grade metal alloys. This heavy-duty metallurgy can withstand continuous exhaust gas temperatures (EGTs) exceeding 1,500 degrees Fahrenheit without warping, scaling, or losing structural integrity, ensuring your mating surfaces stay perfectly flat.

• Thicker Walls and Expansion Joints: By utilizing significantly thicker runner walls and integrated thermal expansion joints, aftermarket manifolds naturally distribute heat more evenly across the casting. This eliminates the internal stresses that cause the factory cast piece to pull inward and crack, preventing costly downtime and tedious hardware extraction repairs.

Aerodynamic Optimization: Pulse Tuning and Diverse Turbo Flanges

Beyond acting as a rugged structural upgrade, an engineered exhaust manifold reshapes how spent exhaust gasses exit your common-rail platform to maximize turbocharger efficiency:

• Pulse-Tuned Runner Design: The stock manifold features a cramped, non-uniform internal layout that forces exhaust pulses from opposing cylinders to collide, creating intense backpressure and heat retention. Performance manifolds utilize smooth, swept runners with matched cross-sectional areas. This pulse-tuned layout coordinates the exhaust gas pulses perfectly as they merge, increasing exhaust velocity to drive your turbocharger harder and reduce off-the-line lag.

• Customizable Turbo Flange Options: Whether you are keeping the stock variable-geometry turbocharger (VGT) setup or executing a high-horsepower build, we stock the exact configurations required. Explore manifolds featuring factory-style multi-bolt VGT mounts, high-flow T3 flanges, or heavy-duty T4 flanges to accommodate single or compound aftermarket turbo configurations. As an added benefit, these manifolds feature pre-drilled and tapped NPT ports, providing clean, stress-free mounting locations to drop in your EGT diagnostic probes.

At Full Force Diesel, we provide the rugged, field-tested exhaust components and heavy-duty hardware your 4th Gen inline-six needs to handle extreme heat and workload stress. Explore our complete selection of 2010–2018 6.7L Cummins 4th Gen exhaust manifolds, high-flow ductile iron upgrades, replacement gaskets, and high-tensile stud kits above to secure your exhaust system today.