Give your Cummins the breath of fresh air it truly craves by replacing restrictive factory plumbing with 3.5-inch mandrel bent tubing. This twin-tube powerhouse nearly doubles the manifold outlet area to deliver quicker turbo spool, cooler EGTs, and snappy throttle response.

Each complete kit packs heavy-duty 5-ply silicone couplers, stainless T-bolt clamps, and factory Cummins gaskets to ensure an airtight install that is ready to dominate off-road terrain.