New Parts launched for GM Duramax, Dodge/Ram Cummins and Ford Powerstroke

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Manifolds That Don't Crack — and Flanges That Fit Your Turbo

The factory Cummins manifold cracks and warps under heat and load. These high-flow stainless manifolds resist that and flow better, and the T3, T4, and T6 versions let you bolt on the turbo your build calls for. On the gas side, the 5.7L HEMI's manifold bolts break and leak — the classic HEMI tick — and the kits here fix it at the source.

Fits these trucks

  • Dodge/Ram 5.9L Cummins (12V & 24V) — high-flow manifolds, T3 / T4 / T6 2nd-gen-swap manifolds
  • Dodge/Ram 6.7L Cummins (24V) — high-flow exhaust manifold, 5" tail pipe
  • 1998–2002 Pre-EGR Cummins — stainless high-flow manifold
  • Ram 1500 / Durango / Jeep 5.7L HEMI (gas) — exhaust manifold kits

Frequently Asked Questions

Why do Cummins manifolds crack?
Thin cast iron fatigues from heat cycling under towing and load — it cracks and warps, opening an exhaust leak that drops boost and raises EGTs.
What's a T3 / T4 / T6 manifold?
The turbo mounting flange. T3, T4, and T6 manifolds let you run the turbo your build needs — common on 2nd-gen swaps. Match the flange to your turbo.
What's the HEMI tick?
A cold-start tick from a 5.7L HEMI manifold leak — usually a blown gasket or broken manifold bolt. Upgraded kits fix it.
Will it fit my truck?
Match your year, engine, and turbo flange on the product page. Get the right part the first time.