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Bolt-On Power: T4i Exhaust Manifold for 2007.5–2018 6.7L Cummins Upgrade your 6.7L Cummins with the DPS T4i Exhaust Manifold—engineered for better flow, lower EGTs, and more usable power. … read more

Why This 6.7L Cummins Exhaust Manifold Is a Must-Have for Your 2019–2021 Ram Upgrade your 2019–2021 Ram 6.7L Cummins with Diesel Power Source’s high-flow exhaust manifold. Designed … read more