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Rudy's Performance Parts

Rudy's Upgraded T3 Exhaust Manifold For 2003-2007 Dodge Ram 5.9L Cummins Diesel

Rudy's Upgraded T3 Exhaust Manifold For 2003-2007 Dodge Ram 5.9L Cummins Diesel

$299.95 USD
$299.95 USD
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Shipping & returns

Shipping is calculated at checkout by size and destination. Most in-stock gear ships within a few business days; large freight items (campers, racks, bumpers) are made to order. Wrong fitment? Send it back within 30 days — we'll help you find the part that does fit.

Fitment & build help

Not sure if this fits your platform? Tell us your year, make, model, and trim — we'll confirm before you order. For bigger builds, we'll help you plan the full stack.

Warranty

Every product on this site ships through authorized channels with full manufacturer warranty. If something breaks in normal use, we'll help you get it resolved.

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Upgrade your 2003-2007 Dodge Ram Cummins 5.9L L6 engine with this premium exhaust manifold, designed to outperform the factory model by up to 23% in recent tests. Boost your truck’s performance and throttle response with quicker turbo spool-up times and reduced backpressure.

Key Features:
  • Enhanced Flow: Outflows factory exhaust manifold by 23%, improving performance and throttle response.
  • Heavy-Duty Build: Thick 0.25" T3 flange design (vs. 0.15" stock) for added strength, eliminating warping and cracking.
  • Optimized Design: Matched ports and merged runner design to reduce exhaust backpressure and maximize flow.
  • One-Piece Construction: Built from durable cast ductile iron with a reinforcing rib, ensuring maximum strength and longevity.
  • Dual Auxiliary Ports: Includes two Exhaust Gas Temperature (EGT) probe ports for easy installation of gauges or testing equipment.
  • Hassle-Free Installation: Comes with all necessary hardware for a straightforward installation process.
Install this high-performance exhaust manifold to experience improved power, enhanced durability, and a noticeable difference in your truck's performance. A must-have upgrade for any Dodge Ram Cummins enthusiast!

Fitment: 
  • 2003-2007 Dodge RAM 5.9L Cummins Diesel

  • Ships from San Diego

    We ship from our San Diego dealer network. Most in-stock gear goes out within a few business days — shipping's calculated at checkout by size and destination.

  • Wrong fitment? We make it right.

    If a part doesn't fit your platform the way it should, send it back. We handle the return and find you the part that does.

  • Authorized dealer support

    Every product moves through proper channels. Full manufacturer warranty, real tech support — no gray-market headaches.