Doug Thorley Headers

Doug Thorley Headers Overview

Doug Thorley Headers Overview

WE ARE STILL A 100% AMERICAN MADE PRODUCT, WHICH IS PRODUCED AT OUR FACTORY IN CORONA, CALIFORNIA. OUR GOAL, AS EVER, IS THE MAXIMIZING OF TORQUE AND HORSEPOWER GAINS AND WE WILL CONTINUE THIS TIME HONORED TRADITION AS WE MOVE INTO THE FUTURE. ALL OF US AT DOUG THORLEY HEADERS THANK ALL OF OUR CUSTOMERS FOR YOUR CONTINUED SUPPORT OVER THE YEARS AND FOR RECOGNIZING THAT OUR HEADERS AND EXHAUST SYSTEMS, DOLLAR FOR DOLLAR, ARE THE VERY BEST VALUE IN THE INDUSTRY.

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86215 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Cat-Back - Aluminized Steel - Ford - F-250 - F-350 Pickup - Kit

Part #: 86215
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

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Starting At
$308.00

86229 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Cat-Back - Aluminized Steel - Ford - F-250 - F-350 Super Duty Pickup - Kit

Part #: 86229
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

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Starting At
$350.00

87219 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Turbo-Back - Aluminized Steel - Dodge - Ram 2500 - 3500 Pickup - Cummins Diesel - Kit

Part #: 87219
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

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Starting At
$350.00

85208 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Cat-Back - Aluminized Steel - Chevy - GMC - C - K-Series Suburban - Kit

Part #: 85208
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

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Starting At
$369.95

85234 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Cat-Back - Aluminized Steel - Chevy - GMC - C - K-Series Pickup - Kit

Part #: 85234
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

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Starting At
$374.95

85250 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Cat-Back - Aluminized Steel - Chevy - GMC - Tahoe - Yukon - Kit

Part #: 85250
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

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Starting At
$374.95

86219 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Cat-Back - Aluminized Steel - Ford - F-250 Pickup - F-250 - F-350 Super Duty Pickup - Kit

Part #: 86219
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

Compare Prices

Starting At
$369.95

86222 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Cat-Back - Aluminized Steel - Ford - Explorer - Kit

Part #: 86222
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

Compare Prices

Starting At
$344.95

86223 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Cat-Back - Aluminized Steel - Ford - Mercury - Explorer - Mountaineer - Kit

Part #: 86223
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

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Starting At
$439.95

89205 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Cat-Back - Aluminized Steel - Toyota - 4Runner - Kit

Part #: 89205
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

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Starting At
$324.95

160Y from Doug Thorley Headers

Thorley Tri-Y Headers Headers - Tri-Y - Steel - Nickel Chrome - Dodge - Ram 2500 - 3500 Pickup - 8.0L - Kit

Part #: 160Y
Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire rpm range. The Tri-Y configuration builds the most power in the middle rpm range which... more

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Starting At
$634.00

160YC from Doug Thorley Headers

Thorley Tri-Y Headers Headers - Tri-Y - Steel - Ceramic Coated - Dodge - Ram 2500 - 3500 Pickup - 8.0L - Kit

Part #: 160YC
Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire rpm range. The Tri-Y configuration builds the most power in the middle rpm range which... more

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Starting At
$707.00

162Y from Doug Thorley Headers

Thorley Tri-Y Headers Headers - Tri-Y - Steel - Nickel Chrome - Dodge - Ram 1500 - 2500 - 3500 Pickup - 5.2 - 5.9L - Kit

Part #: 162Y
Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire rpm range. The Tri-Y configuration builds the most power in the middle rpm range which... more

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Starting At
$594.00

162Y-C from Doug Thorley Headers

Thorley Tri-Y Headers Headers - Tri-Y - Steel - Ceramic Coated - Dodge - Ram 1500 - 2500 - 3500 Pickup - 5.2 - 5.9L - Kit

Part #: 162Y-C
Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire rpm range. The Tri-Y configuration builds the most power in the middle rpm range which... more

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Starting At
$668.00

315Y-S from Doug Thorley Headers

Thorley Tri-Y Headers Headers - Tri-Y - Steel - Nickel Chrome - Chevy - GMC - Van - Small Block - Pair

Part #: 315Y-S
Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire rpm range. The Tri-Y configuration builds the most power in the middle rpm range which... more

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Starting At
$562.00

85205 from Doug Thorley Headers

Doug Thorley Jardine Cat-Back Exhaust Systems Exhaust System - Cat-Back - Aluminized Steel - Chevy - GMC - C - K-Series Suburban - Kit

Part #: 85205
These Doug Thorley Jardine cat-back systems are a great addition to your Doug Thorley headers. Your horsepower torque and fuel economy will increase with these 50-state smog-legal exhaust systems. They produce a powerful throaty sound outside... more

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Starting At
$430.00

HDX-635 from Doug Thorley Headers

Doug Thorley Headers Shortie Header

Part #: HDX-635
Doug Thorley Headers fits: 2000-2006 Jeep Wrangler, 2000-2004 Jeep Grand Cherokee, 2000-2001 Jeep Cherokee, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

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Starting At
$543.00

THY-490Y from Doug Thorley Headers

Doug Thorley Headers 4 Into 1 Header

Part #: THY-490Y
Doug Thorley Headers fits: 1990-1995 Nissan Pickup, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

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Starting At
$350.00

 

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Doug Thorley Headers - Information

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