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Hooker BlackHeart


2015-2021 Subaru WRX/STI 2.5L, 1-5/8 inch Equal Length

Part # BH9306
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These 1-5/8 inch equal length long tube headers are designed for 2015-2021 Subaru WRX/STI with 2.5L engines. They are hand welded from 18 gauge 304 stainless steel and use a 3/8 inch flange to prevent warping. The equal length and precision engineered tube geometry offer excellent fit, simple installation and maximum performance.


  • Equal length primary tubes for balanced flow, maximum power and a refined exhaust note
  • No oxygen sensor (O2 Sensor) extensions required for simplicity and efficiency
  • Constructed from 1-5/8 inch lightweight, 18-gauge, mandrel bent, 304 stainless steel for maximum strength, durability and corrosion resistance
  • Long transition collectors offer increased flow and exhaust velocity
  • 3/8 inch thick, CNC header flanges for strength and superior sealing
  • 100% quality hand TIG welded construction for added strength, longevity and good looks
  • Tube geometry designed for maximum clearance and hassle-free installation
  • All hardware included
  • Manufacturer’s limited lifetime warranty

About Hooker BlackHeart

The BlackHeart team utilizes the latest technology and materials to design exhaust systems, engine swap kits, and mufflers for both import and domestic cars and trucks. Hooker Blackheart is platform-engineered to provide superb performance, aesthetics, and fitment.

Bolt Size3/8-16 x 3/4
Brand Hooker BlackHeart
CARB (California) CompliantNo
Emission Code4
EngineSubaru H4
Header StyleLong Tube
Material304 Stainless Steel
Primary Tube Dia.1-5/8 inch
Product TypeHeaders
Race OnlyYes
WarrantyLimited Lifetime Warranty
Part NumberBH9306

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Limited Lifetime Warranty: See Details

*Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.