Diesel Power Source

RV Cummins Exhaust Manifold for 5.9L Cummins 1998.5-2007 RV & Bus

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DPS Bus and RV Performance Cummins Manifold for 1998.5-2007 5.9L Cummins 24 Valve T3 (Fits most Motorhome and Bus manifolds years 1998.5 1999 2000 2001 2002 2003 2004 2005 2006 2007) ** Legal for inst…
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$479.00
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DPS Bus and RV Performance Cummins Manifold for 1998.5-2007 5.9L Cummins 24 Valve T3

(Fits most Motorhome and Bus manifolds years 1998.5 1999 2000 2001 2002 2003 2004 2005 2006 2007)

** Legal for installation and street use in California, California E.O. Exemption**

2-Piece Performance Bus & RV Cummins Exhaust Manifold for 1998.5-2007 Cummins 24 Valve 5.9L Motorhome

Manifold Comes With:

  • New Bolts
  • 6 Steel Gaskets

The Diesel Power Source 2-Piece Manifold for the 24V & Common Rain engines is a great performance manifold and a factory replacement manifold. Cast from high nickel Ductile Iron (which can handle high heat). We've designed this manifold based on Computational Fluid Dynamic (CFD) Testing, which will results in quicker turbo spool-up, and increases exhaust gas efficiency.

Stock manifolds are known to shrink significantly, causing manifold-cracking, gasket problems, and exhaust flow problems created by exhaust port misalignment. Our 2-Piece 12 valve Manifold, on the other hand, allows manifold to expand and contract with heat, eliminating warping and cracking to the manifold, eliminating the dreaded manifold shrinkage.

The 2-Piece Manifold vastly improves exhaust flow allowing better fuel efficiency, quicker turbo spool-up, increasing overall horsepower and torque, and cooling the end cylinders much better. It also has a divided scroll design to improve spool-up.

This exhaust manifold is generally used on RV's Buses, and Fummins (Ford Cummins Conversions).

RV Exhaust Manifold Features Include:

  • T3 Turbo Exhaust Flange
  • Excellent exhaust flow characteristics lower EGT’s, improves overall performance.
  • Drilled/Tapped ports, two sizes, for pyrometer and pressure fitting.
  • Black High Temperature Coating
  • Comes pressed together, pressure tested and ready to install.
  • CNC Ported
  • 2 Piece Design does not crack

**DPS Exhaust Manifolds have been granted an exemption by CARB, which means they are legal to be installed and used in the state of California

  • Awesome Manifold 5

    Posted by D Gray on Apr 9, 2024

    I've had this manifold for a few months and finally got around to installing it. Not a bad job but do yourself a favor and get a cap screw for the bottom hole on the number 5 cylinder. My truck is running like she is new again. Smoother acceleration. Faster spool up on the turbo. I put a straight edge on it before I installed it and it was perfect. Installation can be a pain but it's well worth it to me. Hoping to put the Artic Air intake on it soon if they get them back in stock.

  • Love this manifold 5

    Posted by Joanne on Feb 15, 2024

    Very happy with the product I received. It was shipped quickly and great customer service.

  • Thumbs up 4

    Posted by Greg Mace on Sep 29, 2023

    Good quality part fast shipping

  • Fast 5

    Posted by Lyle Erman on Jun 21, 2023

    This was shipped ridiculously fast!!! So impressed! Thank you!

  • A+++ 5

    Posted by Five Oh on Jan 8, 2023

    Great quality product came shipped well packaged and fast delivery And these things look amazing. Well built and happy to support a local Utah business!!!

  • 5.9L 3rd gen Manifold 5

    Posted by D Biegenwald on Nov 9, 2022

    picked up my new manifold and installed it over the weekend. I love it! Incredible difference. Silenced all the extra noise under my hood, turbo spools faster, hits hard and sounds amazing. I never have heard my turbo spool so loud. Throttle response is so much better. GREAT PRODUCT! worth the money and drive I did to pick it up!

  • Third Gen Exhaust Manifold 5

    Posted by Colton Walsh on Jan 21, 2022

    Great manifold for a great price. Shipped out same day I ordered. Hardest part of install was getting my old one out.

  • Great Manifold 4

    Posted by Mason S on Apr 25, 2021

    Good lookin manifold. Its nice that it comes with tapped ports for a pyrometer. Unable to monitor EGTs at the moment. Only issue I had with the manifold is the bottom stud on #5. Incredibly tight clearances between the manifold and nut making it near impossible to get a wrench or socket on it - i did though.... Other than that fitment and looks are nice!

  • 5.9 3rd gen manifold 5

    Posted by C Baake on Jul 31, 2019

    Very nice manifold. Bigger than stock. Just got done installing it. Pretty good difference over stock and sounds much better by giving the exhaust a lower tone. The bolt on the lower cyl 5 flange hole is tough to install. I ended up using a capscrew/ allen head bolt. M10 1.50 30mm fits perfect and with an allen socket was able to torque it to spec.

RV Cummins Exhaust Manifold for 5.9L Cummins 1998.5-2007  RV & Bus

RV Cummins Exhaust Manifold for 5.9L Cummins 1998.5-2007 RV & Bus

$479.00

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