Name: Doug Thorley Headers® THY-328-C - 4:1 Mid-Length Tube Exhaust Headers
Brand: Doug Thorley Headers
SKU: mpn4564011977
Price: 827.39 USD
Availability: OutOfStock

Vehicle Fitment

Make	Model	Year
Avanti	II	2002-2004
Buick	Allure	2008-2009
Buick	Lacrosse	2008-2009
Cadillac	CTS	2009-2015
Chevy	Camaro	2002, 2010-2018
	Corvette	2005-2013
	Impala	2006-2009
	Monte Carlo	2006-2007
	SS	2014-2017
Pontiac	Firebird	1998
	G8	2009
	Grand Prix	2005-2008

Product Details

4:1 Mid-Length Tube Exhaust Headers by Doug Thorley Headers®. Primary Tubing Diameter: 1.75". Collector Outlet Diameter: 3". Header Style: Mid-Length Tube. Get the most out of your LS powered sand rail by installing these quality 4:1 mid-length headers. The headers utilize standard 3-bolt flanges at the outlets so that you can fabricate your exhaust system to them in any way you desire. To make these headers last, Doug's built them using industry leading 14-gauge steel tubing with 3/8" thick flanges. Topping all of that off, Doug's headers come beautifully ceramic coated to greatly reduce surface temperatures and protect them from the environment. All 100% American made, and backed by Doug's lifetime warranty. Install these headers today and feel your vehicle's true power potential!

Notes

Straight back exit with flanges.

Specifications

Style: 4:1

Header Style: Mid-Length Tube

Primary Diameter: 1.75"

Collector Diameter: 3"

Material: Steel

Finish: Silver Ceramic Coated

Weld Up: No

Primary Tube Gauge: 14 Gauge

Collector Attachment: 3-bolt Flange

Tuned: No

Flange Thickness: 3/8"

Bolts and/or Studs Included: No

Gaskets Included: No

Adapters/Reducers Included: No

Catalytic Converter(s) Included: No

Quantity: Sold as a Pair

Warranty: Limited Lifetime to original purchaser

Features

Driven by a passion for performance and superior quality
Designed to maximize horsepower and torque of your vehicle
Made with meticulous attention to detail and unmatched craftsmanship

Doug's Long Tube Headers replace restrictive stock exhaust manifolds with long primary tubes designed to dramatically increase the flow of exhaust gasses, and reduce power robbing back pressure within the exhaust system. Allowing the engine to breathe more freely improves power and efficiency, making Doug's Long Tube Headers one of the most cost-effective modifications you can make to your vehicle.

The Long Tube Header is perfect for any high performance street or strip application. Each header is constructed from thick wall steel, and all come finished with Doug's beautiful ceramic coating for long-lasting performance.

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.

Brand:

Doug Thorley Headers

Part Number:

THY-328-C

UPC:

812721020454

Alternate MPN:

THY328C

Warranty

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

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Doug Thorley Headers® THY-328-C - 4:1 Mid-Length Tube Exhaust Headers

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