Our precision-engineered manifolds are the heart of your diesel engine, optimizing airflow for maximum power and efficiency. Whether you drive a Cummins, Ram, Powerstroke, or Class 8 or 7 Semi, explore our range and unleash untapped performance! 

Sidebar Sidebar Sidebar
  • 2003-2007 Exhaust Manifold Cummins 3rd gen Manifold

    T3 Manifold for 24v Cummins 2003-07


    T3 Exhaust Manifold for 03-07 5.9 Cummins 3rd Gen OEM replacement part for MOPAR PN 5135788AC A direct fit replacement performance manifold for 2003-07 5.9 Cummins in Dodge Pickups. This is a T-3 flange which is the same as the stock turbo. Our design is...


    Add to Cart The item has been added
  • Cummins exhaust manifold 12V Cummins manifold

    T3 Manifold for 12v Cummins 1989-98


    T3 Manifold for 12V Cummins Exhaust Manifold 1989-98 DPS presents a game-changing T3 Manifold for your 12V Cummins Exhaust, covering the years 1989-1998 for your Second Gen Cummins 12V. This is a direct factory bolt-on.  The factory manifold has a...


    Add to Cart The item has been added
  • 5.9 Cummins Exhaust Manifold Cummins Exhaust Manifold

    T3 Manifold for 24v Cummins 1998.5-2002


    DPS 3 Piece 24V Cummins Exhaust Manifold for 5.9 Cummins Exhaust Manifold T3 Flange Years 1998.5 1999 2000 2001 2002 2nd Gen ** Legal for installation and street use in California, California E.O. Exemption** The 2nd Gen Cummins stock flange is T3...


    Add to Cart The item has been added
  • RV Manifold Fummins Exhaust Manifold

    T3 Manifold for 12v Fummins or RV


    Ford Cummins Swap Exhaust Manifold | Fits 12V Ford Cummins Conversion | Fummins Swap T3 Performance Fummins Exhaust Manifold for Ford Cummins Swap Kits 12V 5.9 Cummins Motorhome Industrial 3931747, J901683, J931747 replacement. DPS Ford Cummins Swap...


    Add to Cart The item has been added
  • Non-EGR Cummins ISX Manifold isx cummins manifold

    T6 Exhaust Manifold for Cummins ISX fits S400

    T6 Exhaust Manifold fits S400 & S410 Cummins ISX15 | X15 (Not a Stock Replacement) Upgrade Your Cummins ISX15 Performance with DPS T6 Exhaust Manifold for Deleted Semis! Key Features: Lowers EGTs, enhances durability. Accelerates exhaust gases for...

  • T4 Manifold Exhaust Manifold fits Dodge Cummins

    T4 Manifold Center Mount 98.5-2018 *NOT OEM


    T4 Cummins Exhaust Manifold Center Mount 1998.5-2002 *NOT OEM ** Legal for installation and street use in California, California E.O. Exemption for pre-2007 vehicles* DPS T4 Exhaust Manifold for Dodge Cummins T4 manifold is a 3-Piece design to prevent...


    Add to Cart The item has been added
  • 4th gen Cummins Manifold Cummins Manifold 6.7

    T4 Manifold for 6.7 Cummins 2007.5-2018 *NOT OEM

     6.7 Cummins Exhaust Manifold Upgrade for 2007.5-2018 Dodge Cummins 6.7 | T4 T-4 FLANGE WILL NOT FIT FACTORY TURBO! Fits 2007.5, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 6.7L EGR Compatible ! DPS is the best 6.7 Cummins...

    Add to Cart The item has been added
  • 10mm Spin Lock Bolt Kit

    12V Spin-Lock Bolt Kit for 1989-98 Manifolds


    Spin-Lock Bolt Kit for 1989-98 12V DPS Manifolds Our bolts have teeth! Custom made serated flange bolts. Flanged Serrated Spin Lock Bolt kit M10 x 1.5 x 35mm for DPS Exhaust Manifolds on Cummins Engines. Secure your DPS exhaust manifold using our...


    Add to Cart The item has been added

When to Replace Your Diesel Manifold

Signs of a Worn or Faulty Manifold:

Your diesel manifold plays a crucial role in your engine’s performance. Here’s how to know when it’s time for a replacement:

  • Check Engine Light: If your check engine light illuminates, it could signal a problem with the manifold. Scan the trouble code memory to identify the issue.
  • Decreased Engine Performance: A blocked or damaged manifold affects exhaust flow, making your engine feel weak and sluggish. Acceleration becomes challenging, and fuel efficiency drops.
  • Poor Fuel Efficiency: A clogged manifold leads to increased fuel consumption. You’ll notice more trips to the pump as your vehicle burns extra fuel.
  • Trouble Starting: Excessive exhaust gas buildup due to a blocked manifold can make starting the engine difficult. Regular inspections can prevent this issue.

Replacement Frequency

While there’s no fixed interval for replacing stock manifolds, consider these guidelines:

  • Saltwater Environment: Replace every 4 years.
  • Freshwater Environment: Extend the replacement interval slightly.

Keep your diesel running smoothly—inspect your manifold regularly and replace it when needed!

What Is a Performance Diesel Manifold?

A performance diesel manifold is a critical component in optimizing engine efficiency and power output. Unlike stock manifolds, which are often single-piece cast iron designs, performance manifolds offer advantages such as a three-piece construction, customizability, and enhanced durability. Upgrading to a performance manifold can significantly improve exhaust flow, reduce backpressure, and ultimately enhance your diesel driving experience. Whether you’re chasing torque gains, reducing lag, or customizing your setup, a performance diesel manifold is a smart investment for any diesel enthusiast.