ENGINEERED TO ELIMINATE WARPING, SNAPPED BOLTS, AND TICKING

DODGE 6.7L CUMMINS 13-18 EXHAUST SYSTEM

Find durable exhaust manifolds, hardware, and complete systems for your 2013-2018 Ram 2500, 3500, 4500, or 5500 equipped with the 6.7L Cummins engine. Upgrade from a cracked stock manifold or build for higher performance.

  • High-Silicon Ductile Iron

    BD's exhaust manifolds are cast from a premium material that resists warping and cracking from extreme heat cycles.

  • Flow-Tested Design

    Engineered for optimal exhaust flow to the turbocharger, improving efficiency and turbo response.

  • Multiple Turbo Mounts

    Choose from stock, T4, or T6 turbo flange options to accommodate factory VGT or larger aftermarket S300/S400 turbos.

  • Complete Solutions

    From full manifold kits with gaskets and hardware to race pipes and tips, find everything needed for your repair or upgrade.

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FIND THE RIGHT 6.7L CUMMINS EXHAUST SYSTEMS FOR YOUR TRUCK

Find the right exhaust components for your Ram. This table outlines common applications, but many parts fit a broader range.

ApplicationEngineCommon YearsTypical ProductBest For
2013-2018 Ram 2500/3500 Pick-Up6.7L Cummins2013, 2014, 2015, 2016, 2017, 2018Exhaust Manifold or Manifold KitReplacing a cracked OE manifold or upgrading for performance.
2013-2018 Ram 3500/4500/5500 Cab & Chassis6.7L Cummins2013, 2014, 2015, 2016, 2017, 2018Exhaust Manifold Kit, Cab-ChassisHeavy-duty work trucks needing a durable, reliable manifold.
2013-2018 Ram 2500/35006.7L Cummins2013, 2014, 2015, 2016, 2017, 2018Stainless Steel Exhaust Race DPF PipesCompetition or off-road use requiring maximum exhaust flow.
1998.5-2018 Ram5.9L / 6.7L Cummins1998.5-2018Exhaust Manifold Bolt and Spacer KitTechnicians and DIYers needing fresh hardware for a manifold swap.

WHY 6.7L CUMMINS EXHAUST SYSTEMS FAIL AND HOW BD SOLVES IT

Constant exposure to high exhaust gas temperatures and thousands of heat cycles causes the stock cast iron manifold to become brittle, warp, and eventually crack. This leads to exhaust leaks, which present as a ticking sound, soot in the engine bay, and reduced turbocharger performance due to lost drive pressure. Leaks can also cause broken manifold bolts, turning a simple repair into a much larger job.

  • Cracked Manifold

    The most common failure.

    The BD Difference

    Heat cycling causes the factory manifold to crack, resulting in a ticking exhaust leak and lost turbo performance.

  • Exhaust Leaks

    Caused by warped manifold surfaces or blown gaskets.

    The BD Difference

    Look for soot stains on the cylinder head and listen for a ticking noise that may quiet down as the engine warms.

  • Broken Manifold Bolts

    Extreme heat and stress can cause factory bolts to stretch, fatigue, and break, requiring difficult extraction and replacement.

    The BD Difference

    Our Exhaust Manifold Bolt and Spacer Kit provides fresh, fatigue-resistant hardware to prevent this failure on reinstalls.

  • Reduced Turbo Spool-Up

    Exhaust leaks from a bad manifold or gasket reduce the exhaust energy (drive pressure) reaching the turbo, leading to slower spool-up and lazy throttle response.

    The BD Difference

    A high-silicon ductile iron manifold with integrated expansion joints seals the leak and restores full drive pressure to the turbo.

Why did my factory 6.7L Cummins exhaust manifold crack?

The stock manifold is made of a cast iron material that becomes brittle over time with repeated high-temperature heat cycles, leading to stress fractures and cracks.

What makes the BD Diesel manifold more durable?

Our manifolds are cast from high-silicon ductile iron and feature slip-joint expansion joints, allowing the manifold to expand and contract with temperature changes without creating stress points.

What is the difference between the Pick-Up and Cab & Chassis manifolds?

For 2013-2018 models, the turbocharger mounting location and overall manifold geometry are different between the two chassis types. You must select the correct part for your specific truck.

Do I need a T4 or T6 mount manifold?

Only if you are replacing the factory VGT turbo with a larger, non-VGT performance turbo, such as an S300 or S400. For the stock turbo, you need a stock mount manifold.

Should I replace the manifold bolts and gaskets at the same time?

Yes. We strongly recommend using a new gasket set and new bolts and spacers for every manifold installation to ensure a proper, durable, leak-free seal.

Are these exhaust parts emissions compliant?

Emissions legality varies by part and your location. Parts like Flo-Pro Race Pipes are intended for competition or off-road use only. Please verify the emissions status on each product page before purchasing.