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Pontiac Grand Prix Doug Thorley Headers 

When you own Pontiac Grand Prix 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 Pontiac Grand Prix Doug Thorley headers!


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Fits: 69-74 Pontiac Grand Prix, 67-74 Pontiac Firebird/Trans Am, 64-73 Pontiac GTO/LeMans

PART# THY-341-C

Retail: $1,727.89
$1,503.26


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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.

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HEADER MANIFOLD EXHAUST Fits 97-05 GRAND PRIX/GTP/REGAL/IMPALA 3.8L V6

FAPO Hugger Headers for Oldsmobile Cutlass Pontiac Grand Prix Buick Regal 78-87

For Impala Regal Grand Prix 3.8L V6 Supercharge Exhaust Manifold Header Pipe

LS Swap Long Tube Headers 1-7/8" for Chevelle El Camino Malibu Grand Prix LeMans

Exhaust Manifold Header For Grand Prix/Gtp/Regal/Impala 3.8L V6 Stainless Steel

Long Tube Headers for Chevelle/el Camino Monte Carlo Nova-painted Competition







Pontiac Grand Prix Doug Thorley Headers 

When you own Pontiac Grand Prix 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 Pontiac Grand Prix Doug Thorley headers!


Choose Your Vehicle:

Shop Pontiac Grand Prix Doug Thorley Headers by Year

1 - 1 of 1
Sort by:




Fits: 69-74 Pontiac Grand Prix, 67-74 Pontiac Firebird/Trans Am, 64-73 Pontiac GTO/LeMans

PART# THY-341-C

Retail: $1,727.89
$1,503.26


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?

HEADER MANIFOLD EXHAUST Fits 97-05 GRAND PRIX/GTP/REGAL/IMPALA 3.8L V6

FAPO Hugger Headers for Oldsmobile Cutlass Pontiac Grand Prix Buick Regal 78-87

For Impala Regal Grand Prix 3.8L V6 Supercharge Exhaust Manifold Header Pipe

LS Swap Long Tube Headers 1-7/8" for Chevelle El Camino Malibu Grand Prix LeMans

Exhaust Manifold Header For Grand Prix/Gtp/Regal/Impala 3.8L V6 Stainless Steel

Long Tube Headers for Chevelle/el Camino Monte Carlo Nova-painted Competition











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