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Hooker BlackHeart Cat-Back Exhaust Kit + Y-Pipe (w/o mufflers)

2015 Ford Mustang Ecoboost 2.3L L4 3" into Dual 2-1/2" Cat-Back Exhaust kit (without mufflers) Black Tips

PART# 70503312-RHKR

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At the heart of any performance vehicle is the exhaust system. Hooker with its classic heart logo has been at the core of the exhaust industry for decades. Many of the most powerful vehicles on the planet have used Hooker Headers. Hooker continues to push the boundaries of performance with the new BlackHeart line of performance exhaust systems for popular late model vehicles. The BlackHeart line is truly a platform designed full exhaust program. From the cylinder head flange to the tailpipe, the BlackHeart line is engineered to provide maximum exhaust velocity, ground clearance, style, performance, and quality! When it's time to tear the heart out of the competition – choose BlackHeart!


  • Exhaust systems offered with 3” into dual 2.5” lightweight 18-gauge 304 stainless steel construction maximizing strength and durability
  • Max dyno gains of +14.32 HP & +12.52 LB.FT torque (w/o muffler design)
  • System equipped with straight through no muffler design
  • 4” 304 Stainless Steel black powdercoated tips with laser etched Hooker BlackHeart logo to add maximum styling to your ride
  • Quality welds for strength, Longevity, and good looks
  • Utilizes factory mounting points for ease of installation
  • Tube geometry designed for maximum ground clearance and hassle free installation
  • Manufacturer’s Limited Lifetime Warranty


Application2015 Mustang 2.3L
BrandHooker BlackHeart
Emission Code1
Product TypeCat-Back Exhaust Kit
Type of MufflerNone
Part Number70503312-RHKR


This part is legal for use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it has a California Air Resources Board Executive Order number or is a direct or consolidated replacement part.

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
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      Some parts are not legal for use in California or other states with similar regulations.