High Flow Exhaust Manifold for Dodge Ram (2009-2024) 5.7L

Heavy-Duty High Flow Exhaust Manifold Kit for 2009-2024 Ram, Dodge Ram 1500, 2500, 3500 (DS / DJ / D2)

What it Does: The High Flow Exhaust Manifold replaces the failure-prone factory manifold on 2009-2024 Ram 1500, 2500, and 3500 trucks to eliminate exhaust leaks, reduce backpressure, and prevent snapped manifold studs.

The Stock Ram 5.7L HEMI Exhaust Manifold Failure

Factory 5.7L HEMI exhaust manifolds are notorious for severe thermal cycle distortion. Differential thermal expansion between the factory ductile iron casting and aluminum cylinder heads places excessive shear stress on the rearward hardware (cylinders 7 and 8). Over repeated heat cycles, OEM manifolds warp, fatigue, and snap the rear mounting studs, yielding the notorious cold-start exhaust tick, elevated exhaust gas temperatures (EGTs), and lost scavenging efficiency.

The Engineering Solution

Engineered for the 4th Generation DS / DJ / D2 platform, this high-flow manifold is poured from high-tensile, heat-stabilized cast iron to mitigate dimensional deformation under sustained load. The casting features optimized internal runner geometry to minimize boundary layer turbulence and backpressure against the cylinder head. To permanently resolve hardware sheer, this kit integrates extended fasteners paired with engineered thermal spacers, allowing the assembly to absorb thermal growth without yielding the studs or blowing the exhaust gasket.

What's Included

• High-flow cast iron exhaust manifold
• Heat shield
• Exhaust manifold gasket
• Extended mounting fasteners and expansion spacers

Technical Specifications

Compatibility

• 2009-2018 Dodge Ram / Ram 1500 5.7L HEMI
• 2019-2024 Ram 1500 Classic (DS Body Style ONLY) 5.7L HEMI
• 2010-2018 Ram 2500 5.7L HEMI
• 2010-2018 Ram 3500 5.7L HEMI

Frequently Asked Questions & Fitment Warnings

Does this fit the DS / DJ / D2 Ram 1500, 2500, 3500?

Yes, this is a direct bolt-on fit for 2009-2024 trucks equipped with the 5.7L HEMI; it fits the 4th Generation Classic body style only and does not fit 5th Gen (DT) new body style models or 3.6L/6.4L engines.

Are specialized thermal expansion spacers and bolts included with the kit?

Yes, this kit supplies extended fasteners and dedicated spacers specifically engineered to handle cast iron expansion under high towing loads.

The Ram Heavy-Duty Towing Standard

Built to handle extreme commercial duty cycles and maximum GCWR hauling, this heavy-duty iron manifold delivers leak-free reliability, robust heat resistance, and restored low-end towing torque without recurring hardware failures.