BBK Long Tube Headers 1-3/4" Stainless Steel Mustang GT 2011-2021/ Boss 302 2012-2013



  • 1-3/4" Primary Tubes
  • Stainless Steel Construction
  • 3/8" Thick Flanges
  • Increased HP/Torque
MSRP $899.99
You save 11%

BBK Stainless Steel 1-3/4" Long Tube Headers for 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and 2021 GT Mustangs, and 2012-2013 Boss 302 Mustangs.

Your all-new 5.0-liter engine is already delivering nearly double the horsepower of its 5.0L predecessor, but what if you could get even more horsepower and torque out of it? With the BBK Stainless Steel 1-3/4" Long Tube Headers (P/N: 16335) installed on your 2011-2021 GT or 2012-2013 Boss 302 Mustang, you'll see even more gains! 

This all-new rugged BBK header design is constructed with 1-3/4" CNC Mandrel-Bent stainless steel tubing and solid 3/8" laser cut exhaust flanges. Initial testing is showing gains of around 30+ horsepower with the high flow catted X-pipe. All BBK headers include a set of new gaskets, required hardware and detailed installation instructions for installation.

Features and Benefits:
- 1-3/4-inch CNC Mandrel-Bent Tubing
- 30+ Horsepower Gains with High Flow Catted X-Pipe
- Improved Horsepower and Torque 
- Ceramic Coated Finish 

*Ford changed the thread pitch on the header bolts midway through productions. 5.0L Mustangs made from March 2010-August 2010 require fine thread header bolts, 5.0L Mustangs made after August 2010 require coarse thread bolts. BBK includes bolts for either application. It is VERY important to make sure that you use the correct bolts--serious damage can be caused by using the wrong bolts.

Vehicle Fitment:
- 2011-2021 GT Mustang
- 2012-2013 Boss 302 Mustang

Tech Tip: All 2015-2021 GT Mustangs will require P/N: EX1816 or custom connection pipes made for installation. In addition, 2015-2017 GT Mustangs must use BBK Front O2 Extension Harnesses (sold separately) P/N: O2H6. And 2018-2021 GT Mustangs must use BBK Front O2 Extension Harnesses (sold separately) P/N: BBK1121.

Please Note: These headers are NOT compatible with RHD (Right-Hand-Drive) Models.

California Residents: Proposition 65 Warning

Note: This item is not CARB (California Air Resource Board) exempt and is not legal for sale or use in the state of California.

Installation Difficulty


Intermediate skill is required for this installation.

Vehicle Fitment

This product will fit the following Mustang years:

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