4″ or 5″ Turbo Back CAT Delete Exhaust System – 2003–2004 Dodge Ram 5.9L Cummins

Unleash the full potential of your 2003–2004 Dodge Ram 2500/3500 5.9L Cummins Diesel with a Turbo Back CAT Delete Exhaust System engineered for performance, durability, and efficiency. This upgrade eliminates restrictive factory exhaust components, giving you improved throttle response, better fuel economy, and the aggressive exhaust note every Cummins owner wants.

What’s Inside the Box

• SS409 Turbo Back Race Exhaust (fits 2003–2004 5.9L Cummins)
• 1.25″ Wide Band Clamps – heavy-duty, leak-free sealing
• Mandrel-Bent Tubing – maximizes airflow for consistent power gains
• Pre-Bent Exhaust Hangers – easy bolt-on fitment
• Optional Muffler Setup – includes pipes for both straight pipe or muffler configuration
• 1″ Larger Diameter SS304 Exhaust Tip – upgraded look & performance
• Factory Turbo Band Clamp Compatible – reuse OEM clamp for secure fit

Vehicle Fitment

✔ 2003 & 2004 Dodge Ram 2500/3500 Cummins 5.9L Diesel
✔ Fits Regular Cab (short/long bed), Crew Cab (short/long bed), and Mega Cab
✘ Does not fit Cab & Chassis commercial trucks
⚠ Important: 2004.5 models have a different turbo elbow – please confirm your exact year before ordering.

Exhaust Material

• Built from T-409 Stainless Steel for strength and corrosion resistance
• Ideal for trucks driven in harsh, salted winter conditions
• Note: T-409 stainless is magnetic, so a magnet will stick (don’t confuse with cheap alternatives)

Easy Installation

• Approx. 1-hour install using basic hand tools (faster with a lift)
• May require minor cutting for shorter wheelbase setups
• Includes clamps, hangers, and hardware (some OEM hardware reused)

Performance Benefits

• Improved Fuel Mileage – Expect up to 18–19 MPG combined after CAT delete (results vary with driving habits and larger tires)
• Stronger Throttle Response & Power – Less restriction means quicker acceleration and better towing performance
• Aggressive Diesel Sound – Get the bold Cummins tone without factory restrictions

🔥 Why Choose This Exhaust?

Unlike cheap knock-offs, this premium stainless system is precision-designed for the 2003–2004 5.9L Cummins. Built tough, it delivers long-term durability, improved fuel efficiency, and the performance gains your Ram deserves.