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GMC Sierra Doug Thorley Headers 

When you own GMC Sierra Doug Thorley headers, you own a piece of history! Doug Thorley has been making headers since 1958, so it's safe to say that they know what they're doing when it comes to finding the horsepower hidden in your ride's exhaust. Amazing attention to detail and real craftsmanship are just two reasons you'll love your new GMC Sierra Doug Thorley headers!


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Fits: 2002 GM 6.0L Pick Up / SUV 2/4WD

PART# THY-309-S-C

Finish: Ceramic Coated
Header Style: Shorty
Retail: $1,332.29
$1,159.09


Free Shipping!


Fits: 2002-12 GM 4.8L-6.2L Pick Up / SUV 2/4WD

PART# THY-309-C

Finish: Ceramic Coated
Header Style: Shorty
Retail: $1,294.48
$1,126.20


Free Shipping!


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For Silverado Sierra Truck 1 3/4 Long Tube Headers Y-Pipe 99-06 4.8L 5.3L 6.0L

Shorty Headers for GMC Chevy 03-06 Sierra Silverado 1500HD 2500HD Truck 6.0L

Shorty Headers for 2008-2013 Chevy Silverado GMC Sierra 1500 5.3L V8 304SS

Shorty Headers For 03-06 Chevy GMC Sierra Silverado 1500HD 2500HD Truck 6.0L

Shorty Headers for 03-06 Chevy GMC 6.0L Sierra Silverado Truck 1500HD 2500HD V8

For Silverado Sierra Truck 1 3/4 Long Tube Headers Y-Pipe 99-06 4.8L 5.3L 6.0L





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  • Headers(2)
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  • Doug Thorley(2)
Finish
  • Ceramic Coated (2)
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  • Shorty (2)
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  • $500 and Over(2)


GMC Sierra Doug Thorley Headers 

When you own GMC Sierra Doug Thorley headers, you own a piece of history! Doug Thorley has been making headers since 1958, so it's safe to say that they know what they're doing when it comes to finding the horsepower hidden in your ride's exhaust. Amazing attention to detail and real craftsmanship are just two reasons you'll love your new GMC Sierra Doug Thorley headers!


Choose Your Vehicle:

Shop GMC Sierra Doug Thorley Headers by Year

1 - 2 of 2
Sort by:




Fits: 2002 GM 6.0L Pick Up / SUV 2/4WD

PART# THY-309-S-C

Finish: Ceramic Coated
Header Style: Shorty
Retail: $1,332.29
$1,159.09


Free Shipping!


Fits: 2002-12 GM 4.8L-6.2L Pick Up / SUV 2/4WD

PART# THY-309-C

Finish: Ceramic Coated
Header Style: Shorty
Retail: $1,294.48
$1,126.20


Free Shipping!


Previous1Next

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Not able to find what you are looking for?

For Silverado Sierra Truck 1 3/4 Long Tube Headers Y-Pipe 99-06 4.8L 5.3L 6.0L

Shorty Headers for GMC Chevy 03-06 Sierra Silverado 1500HD 2500HD Truck 6.0L

Shorty Headers for 2008-2013 Chevy Silverado GMC Sierra 1500 5.3L V8 304SS

Shorty Headers For 03-06 Chevy GMC Sierra Silverado 1500HD 2500HD Truck 6.0L

Shorty Headers for 03-06 Chevy GMC 6.0L Sierra Silverado Truck 1500HD 2500HD V8

For Silverado Sierra Truck 1 3/4 Long Tube Headers Y-Pipe 99-06 4.8L 5.3L 6.0L