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OBX Stainless Steel 4-1 Merge Collector With 1-7/8" ID 3.5" Outlet w/o Flange

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Product Description

OBX Racing Sports™ exhaust headers feature high-performance straight-flow technology to unleash the engine's maximum horsepower. Increases velocity and delivers a measurable boost on the low as well as top end. OBX Racing Sports™ exhaust headers are individually hand built from highest grade materials. Extremely competitive pricing that won't break your bank. Needless to say, this is what you can expect from a vendor of the world's largest automobile OEM manufacturer supplier. 


  • OBX Racing Sports™ 304 Grade Stainless Steel Header and Down Pipe. 


  • 1999 thru 2003 Ford F-150 Lightning Harley 5.4L

Approximated Dimensions:

  • Primary Tubes Diameter: 1 5/8"
  • Collector Diameter ID/OD: 2.40" / 2 1/2"
  • Header Flange Thickness: 3/8"
  • Pipe ID/OD: 2.40" / 2 1/2"
  • Flange Thickness:3/8 Inch
  • Runner Wall Thickness: 16 Gauge(1.5mm)

General Information:        

  • Dyno tested and proven to increase horsepower
  • Bolt-on type for easy installation
  • High quality 304-grade stainless steel durability
  • Mandrel bend for ultra-smooth fast flow
  • Computer Numerical Control (CNC) machined flange for precision fitment
  • Dual Tungsten Inert Gas (T.I.G.) welding for a stronger hold
  • Included all accessories shown in the photo
  • NO installation instruction with this kit, we recommended professional installation
  • Contact us thru eBay message for any question
    Not legal for sale in California!!!  If your vehicle is registered in California or your shipping address is located in California, DO NOT PURCHASE THIS PART!!! Order will be automatically cancelled and refunded

    “For off-road, competition/racing use only. This product is not intended to be installed on vehicles registered for highway use. LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES THAT MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY.”

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