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USD 747.4
Part #: MAG15986

Magnaflow Exhaust System Turbo-Back 5" SS tubing 15986

2004.5-2007 Dodge 5.9L Cummins CC/SB-LB
Part #: MAG15986
★★★★★ ★★★★★ 4 Reviews
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MagnaFlow's Performance Diesel Systems feature giant, fast-flowing, 5" mandrel-bent stainless steel tubing, and a polished 5" diameter stainless steel tip. The MagnaFlow systems incorporate mirror finished MagnaFlow Performance Mufflers with a straight-through design. You can expect significant gains in horsepower, torque, improved fuel economy and a lower EGT (exhaust gas temperature).
MagnaFlow Performance with a Lifetime Warranty
OEM-Style Barbed Hangers
Giant 5" Polished Stainless Steel Tip

Turbo-back: Replaces the flattened OEM downpipe with a stepped mandrel-bent down pipe and OEM style flange that bolts to the back half of the system. Use when a few engine modifications are planned.

Additional Information

Install Sheet


  • MFG. Number 15986
  • Manufacturer Name MagnaFlow
  • Shipping Weight 84.00 lb.
  • Shipping Length 59 in.
  • Shipping Width 14 in.
  • Shipping Height 21 in.
  • Warranty Yes
  • Warranty Info Lifetime
  • Prop 65 WARNING: Cancer & Reproductive Harm -


★★★★★ ★★★★★
4.0/5 Stars out of 4 Reviews
(Unknown) | March 17th, 2007
The magnaflow made my dodge ram 2500 mega cab the loudest truck in town!!! Plus the 5" chrome tip looks sweet!!! Highly recomendable.
MAG15986 Review
(Unknown) | April 3rd, 2007
Easy install, sounds great.TP
Easy install, sounds good
(Denver, CO) | February 15th, 2009
Getting the old exhaust off was the hard part. This system fit very well, and was easy to install.The big chrome tip looks good for a few months until it is covered with soot. The system sounds good, but is loud. Driving under 2,000 rpm the sound is nuce, but at highway speeds it can get annoying on long drives. This is without the CAT. On 2005+ models adding the CAT into the system should reduce the sound a bit.
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Emissions Notice

This product is not legal for sale or street use in California. Certain aftermarket products are subject to governmental emission standards regulated by the California Air Resources Board. In order for these products to be legal on a specific vehicle in California, the part number must receive a CARB Executive Order (EO) number. This number makes the part legal for use only on specific years, makes and models of vehicles. A decal with CARB EO number for these parts must be displayed in the engine bay to satisfy smog inspection requirements.