Your Cart Is Empty
Video
Images
Showing 1 - 7 of of 8
Video

Doug Thorley Headers

(100)
  • $301.00 - $1,249.00
  • Free Shipping
  • What Do You Drive?
Have a Question?
Have a Question? Ask a product expert! (800) 874-8888 Live Chat

Please answer the following questions before adding to cart to help us provide you with customized for your specific vehicle.

    ADD TO CART Cancel

    Features

    Description

    It was the late 1950s, during the golden era of hot rods, when Doug Thorley crafted his plans for the highest quality headers on the block. Fine tuning, superior craftsmanship and unmatched attention to detail helped Doug Thorley Headers power street racers everywhere.

    Now 50 years later, Doug Thorley Headers are built with the same mission in mind: amping-up the power of your street ride. Thorley Headers use one of three souped-up designs: a unique Tri-Y setup that roars from idle up to 4500 RPM; shortie headers for ease of installation and smog compliance; and long tube headers that specialize in mid to high RPM power.

    Because they're setup for the streets, Thorley Headers also feature the hardware and custom flanging to be 50-state smog legal (some shortie applications). Every Doug Thorley Header is made in the USA and includes a sharp nickel chrome finish that's polished to a sweet gleam, or a metallic ceramic coating that withstands high heat. And, your Doug Thorley Headers carry a Lifetime Warranty for the original owner.

    Thanks to the Magnuson Moss Warranty Act: US Code – Title 15, Chapter 50, Sections 2301-2312, your vehicle’s factory warranty is protected by law when you add aftermarket parts.  Details

    Doug Thorley Headers Customer Reviews

    Average Rating

    100 Customer Reviews

    Awesome sound but needed modification

    Reviewed by Johnathan M (Jacksonville, FL) Reviewed for a 2008 Chevy Silverado — Aug 02, 2018 8:16 PM

    Appearance
    Ease of Installation
    Price/Value
    Quality
    Was this review helpful?
    Yes   No

    The bad: the crossover pipe didn't line up correctly on my 2008 Silverado 5.3. The exhaust shop had to cut, bend and splice to get it to work. Mine is lifted (suspension and body), so that may be the reason for it. Also, no gaskets included. The good: everything else is good. These are thick and heavy. The description says ceramic coated and the part # is for the chrome version... they are chrome (nice!). Sound is amazing with Magnaflow Performance series 24" (catless)! Very happy customer!

    Great Header!

    Reviewed by Christopher S (VAN NUYS, CA) Reviewed for a 2006 Toyota Tacoma — Feb 11, 2018 5:03 PM

    Appearance
    Ease of Installation
    Price/Value
    Quality
    Was this review helpful?
    Yes   No

    easy instructions, easy installation, perfect fit... Love my Thorley..

    Purdy Headers!

    Reviewed by Bob B (Tacoma, WA) Reviewed for a 2000 Toyota Tundra — Jan 03, 2018 6:11 PM

    Appearance
    Ease of Installation
    Price/Value
    Quality
    Was this review helpful?
    Yes   No

    I ordered these and they arrived well packaged and quickly. I had a shop put these on for me along with some Magna-flow catalytic converters and a Flowmaster cat-back system, so I cant really comment on how hard they are to put in. I do want to say that they did not come with new exhaust gaskets for either end of the headers. I noticed a definite increase in horsepower and engine response, but I replaced the whole exhaust from the block back. Overall I give em 4 stars (a bit expensive)

    2002 4Runner

    Reviewed by Michael L (SAN MARCOS, CA) Reviewed for a 2002 Toyota 4Runner — Sep 08, 2017 8:53 PM

    Appearance
    Ease of Installation
    Price/Value
    Quality
    Was this review helpful?
    Yes   No

    Just installed, look great, sound fine, going with a aftermarket air filter, should be fine.

    Tacoma 2.7 improved

    Reviewed by MARCUS D (CORONA, CA) Reviewed for a 2013 Toyota Tacoma — May 09, 2017 10:08 PM

    Appearance
    Ease of Installation
    Price/Value
    Quality
    Was this review helpful?
    Yes   No

    Header was well built. Great finish, very pretty. Install was a pain, but I figured it out. The egr housing hits the header flange, so I enlarged the mount holes with a drill bit and it shifted the egr just enough. Install took me 3 hours and I am an experienced mechanic. First test drive I noticed no difference. After a few fillups and the computer adjusted and get better pedal feel and little better fuel economy. Even with the hassle of the install, no regrets.