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USD 681.63
Part #: MAG15966

Magnaflow Exhaust System Turbo-Back 4" SS tubing 15966

1999-2003 Ford 7.3L Powerstroke Excursion SUV
Part #: MAG15966
★★★★★ ★★★★★ 1 Reviews
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MagnaFlow's Performance Diesel Systems feature giant, fast-flowing, 4" 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

: 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 15966
  • Manufacturer Name MagnaFlow
  • Shipping Weight 70.00 lb.
  • Shipping Length 59 in.
  • Shipping Width 14 in.
  • Shipping Height 21 in.
  • Warranty Yes
  • Warranty Info Lifetime
  • Prop 65 WARNING: Cancer & Reproductive Harm -


★★★★★ ★★★★★
5.0/5 Stars out of 1 Reviews
Turbo back kit for future
(Unknown) | March 28th, 2007
This kit is on my 2000 model with 6sp and it sounds great. It is not very loud but has a throaty sound. Installation is very simple and the craftsmanship is excellent. You need this if you add a serious chip or programmer for lower EGT's.

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Questions and Answers

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Most Popular Questions

Do I have to have muffler in exhaust or can I run straight 4 inch from turbo back?
View Staff Answer 

You may be required by law in certain states to run a muffler, but it’s not required for the truck to run properly. Running a 4” turbo back exhaust without a muffler will often be much louder than with a muffler, but this is merely personal preference. (To verify if a muffler is necessary in your state contact your local DMV.)