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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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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?

Stainless Steel Shorty Header For 99-05 Chevy/GMC GMT800 8CYL Exhaust/Manifold

For 99-06 Chevy GMC Silverado/Sierra 4.8L/5.3L/6L Long Tube Exhaust Headers Kit

FOR 02-06 CHEVY/GMC GMT800 SILVERADO/SIERRA 1500 EXHAUST MANIFOLD HEADER Set

1-7/8"Long Tube Headers for Chevy 99-06 Silverado Sierra Tahoe Yukon 4.8 5.3 6.0

Exhaust Manifold Headers Y Pipe For 14-17 Chevy GMC Silverado Sierra 1500 6.2L

Exhaust Shorty Headers for Chevy GMC 2014-2018 Silverado Sierra 1500 5.3L V8





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  • Headers(2)
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  • Doug Thorley(2)
Finish
  • Ceramic Coated (2)
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  • Shorty (2)
Price
  • $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?

Stainless Steel Shorty Header For 99-05 Chevy/GMC GMT800 8CYL Exhaust/Manifold

For 99-06 Chevy GMC Silverado/Sierra 4.8L/5.3L/6L Long Tube Exhaust Headers Kit

FOR 02-06 CHEVY/GMC GMT800 SILVERADO/SIERRA 1500 EXHAUST MANIFOLD HEADER Set

1-7/8"Long Tube Headers for Chevy 99-06 Silverado Sierra Tahoe Yukon 4.8 5.3 6.0

Exhaust Manifold Headers Y Pipe For 14-17 Chevy GMC Silverado Sierra 1500 6.2L

Exhaust Shorty Headers for Chevy GMC 2014-2018 Silverado Sierra 1500 5.3L V8