Doug Thorley Headers® - 4-2-1 Tri-Y Exhaust Header Kit with Complete Connector Pipes

00 reviews|Item # 372849214
$974.00 - $985.00
In Stock (6) - Ships Tomorrow 07.16.18
1996 Chevy Tahoe
Fits Following Model(s):
  • 5.7L Automatic Transmission
    This is a CARB compliant part, legal for use on vehicles built to meet CARB standards and/or registered in California and other states which follow CARB standards.
Product Options
Add To Cart
Add to Wishlist
Authorized Dealer

Have a Question? Ask a Specialist

888.634.9437Live Chat
Low Prices. Price match guarantee
Guaranteed Fitment. Always the correct part
In-House Experts. We know our products
Easy Returns. Quick & Hassle Free
Select Product Options
Please Select
    Total: $0.00
    Add To CartCancel

    Product Details

    Doug Thorley Headers

    Chevy Tahoe 5.7L Automatic Transmission 1996, 4-2-1 Tri-Y Exhaust Header Kit with Complete Connector Pipes by Doug Thorley Headers®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Emissions: CARB compliant. Backed by over 50 years of knowledge and experience, Doug's headers are designed to outflow your stock exhaust manifolds by leaps and bounds. Tri-Y (or 4 into 2 into 1) style headers by design will increase the power of your motor across the widest RPM band possible. That is the beauty of the design, and that is why they are the best street header available. To make these headers last, Doug's built them using industry leading 14-gauge mild steel tubing with 3/8" thick flanges. To top all of that off, all of Doug's headers come beautifully ceramic coated to greatly reduce under-hood temperatures and protect the headers from the environment. All 100% American made, and backed by Doug's lifetime warranty of course! Unless otherwise noted, these headers are designed to fit the vehicle as it came from the manufacturer. This includes components like cylinder heads, chassis, steering, motor mounts, body mounts and bushings, etc. If your vehicle is using aftermarket components, parts from other applications, or custom altered parts, then it is the installer's responsibility to verify fitment. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost.

    Fitment notes: This is a CARB compliant part, legal for use on vehicles built to meet CARB standards and/or registered in California and other states which follow CARB standards.

    Doug Thorley Headers


    Primary Diameter: 1.625"
    Collector Diameter: 2.5"
    Emissions: CARB compliant
    Header Style: 4:2:1 Tri-Y Header
    Material: Steel
    Finish: Silver Ceramic Coated
    Weld Up: No
    Primary Tube Diameter (in): 1-5/8"
    Primary Tube Gauge: 14 Gauge
    Collector Attachment: 3-Bolt Flange
    Collector Diameter: 2-1/2"
    Tuned: No
    Flange Thickness: 3/8"
    Bolts and/or Studs Included: Yes
    Gaskets Included: Yes
    Reducers/Adapters Included: No
    Y-Pipe (Crossover) Included: Yes
    Quantity: Sold as a Complete Kit
    Warranty: Limited Lifetime to original purchaser

    The Tri-Y Headers is designed with an emphasis on maximum low and mid range torque, while making ample horsepower throughout the RPM range. The 4:2:1 Tri-Y headers design makes it the ideal choice for trucks, tow-rigs, RV's and most street applications. The collector design makes this header one of Doug's most efficient, which means you'll see improvements both on the dyno and at the pump.

    A Doug Thorley Headers original design, the 4:2:1 collector specification on the Tri-Y Headers is engineered to match your engine's firing order and thereby maximize exhaust scavenging - the complete expulsion of gasses on the exhaust stroke. The Tri-Y design creates more usable power and torque than any other headers design, making it the headers of choice for enthusiasts who want the most bang for their buck.

    For over 50 years, Doug Thorley Headers has been an innovator in the automotive aftermarket. Driven by a passion for performance and superior quality, they are committed to developing 100% American-made products that will reliably deliver maximum horsepower and torque. Doug Thorley Headers® has been pushing the limits of automotive technology since they first invented the Tri-Y header in 1958, and they do it all on American soil.

    Warranty Information

    Doug Thorley Headers

    Limited Lifetime Warranty

    Unless otherwise specified, Doug Thorley Headers (hereinafter DTH) header products are warranted against defective materials and workmanship for as long as you, the original consumer purchaser, owns said header product. DTH exhaust products, defined as any component “downstream” of a DTH header product or OE factory exhaust manifolds, are warranted against defective materials and workmanship for a period of 5 years from the original consumer purchase date. These limited warranties are offered solely to the original purchaser, are non-transferrable and proof of purchase is required for any warranty claims. These warranties shall be limited to the repair, adjustment, and/or replacement of defective parts at the discretion of DTH. Authorized product(s) returned will be repaired or replaced also at the discretion of DTH. All warranties become void if any product shows evidence of any modification done without the express consent of DTH, and includes mishandling, bending, welding, mutilation of parts, and insulating wrap products. Nor shall DTH be responsible for any damages, whether consequential, special, contingent or otherwise; or expenses or injury that may arise from the use of DTH products. The bluing and discoloration of chrome exhaust products is considered normal, as is the dulling of ceramic coated products, and as such, coatings are not covered under the terms of the warranty. Environmental exposure and rust apparent during the extended life of products is also considered normal and excluded from the warranty. Any DTH product that has been discontinued from new sales for a period of 5 years or longer will no longer be eligible for replacement under terms of the warranty, the repair of any defective parts will be the only option. This warranty policy supersedes any other warranties offered by DTH. DTH reserves the right to modify the warranty policy at any time, and a detailed copy of sale terms, condition and warranty information is available upon request.

    Magnuson-Moss Warranty Act:
    Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More
    Low Prices Price match guarantee
    In-House Experts We know our products
    Guaranteed Fitment Always the correct part
    Easy Returns Quick & Hassle Free

    All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. It is neither inferred nor implied that any item sold by is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.