2004.5-2007 Cummins 5.9L 5" Cat Back Single w/ Muffler (511101 / 512116)2004. 5 2007 Cummins 5. 9L 5" Cat Back Single w Muffler (511101 512116) Constructed out of 16 gauge aluminized steel or T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs and amplified air flow with this Mel's system. For powerhouse performance, Mel's delivers horsepower you can hear!

The Dodge 48RE transmission's low mainline pressure at lighter throttle pedal position can cause shudder and slippage

valvetrain

Use of pyrometer mandatory

Quantity: Sold as a set

350 RWHP with proper supporting modifications

Sold as a set

All PPE OEM Up-Pipes allow 53% greater flow than stock

BD's heavy duty sway bar end links are stronger and more durable than OEM links

Reman injector set flowing at 60 percent over

Choose the original

1250 on a stock head with larger valves

One bottle is recommended monthly to keep things clean or on every fill up for increased Cetane