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GMC Jimmy Doug Thorley Headers 

When you own GMC Jimmy 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 Jimmy Doug Thorley headers!


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Fits: 67-87 Chevrolet C- and K-Series Truck/Suburban/Blazer, 67-87 GMC Jimmy

PART# THY-323Y-C

Retail: $1,905.35
$1,657.65


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?

For LS Swap S10 Conversion Swap Headers Truck & SUV LS1 LS2 LS3 LS6 GMC Jimmy

Long Tube Header For GMC Chevy C10 K10 Pickup Blazer Jimmy 66-87 Small Block V8

Fits LS Swap S10 Conversion Swap Headers Truck & SUV LS1 LS2 LS3 LS6 GMC Jimmy

LS Swap S10 Conversion Headers Fit Chevrolet S10 GMC Jimmy V8 Engine 2.2L 4.3L

FOR GMC Chevy C10 K10 Pickup Blazer Jimmy 66-87 Small Block V8 Long Tube Headers

Long Tube Header 1969-1974 For Chevrolet / GMC Blazer Suburban Jimmy V8 283 350







GMC Jimmy Doug Thorley Headers 

When you own GMC Jimmy 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 Jimmy Doug Thorley headers!


Choose Your Vehicle:


1 - 1 of 1
Sort by:




Fits: 67-87 Chevrolet C- and K-Series Truck/Suburban/Blazer, 67-87 GMC Jimmy

PART# THY-323Y-C

Retail: $1,905.35
$1,657.65


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 LS Swap S10 Conversion Swap Headers Truck & SUV LS1 LS2 LS3 LS6 GMC Jimmy

Long Tube Header For GMC Chevy C10 K10 Pickup Blazer Jimmy 66-87 Small Block V8

Fits LS Swap S10 Conversion Swap Headers Truck & SUV LS1 LS2 LS3 LS6 GMC Jimmy

LS Swap S10 Conversion Headers Fit Chevrolet S10 GMC Jimmy V8 Engine 2.2L 4.3L

FOR GMC Chevy C10 K10 Pickup Blazer Jimmy 66-87 Small Block V8 Long Tube Headers

Long Tube Header 1969-1974 For Chevrolet / GMC Blazer Suburban Jimmy V8 283 350