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Exhaust Headers - Doug Thorley Headers

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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.

Exhaust Subcategories

Crossover and Y-Pipes
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- H-Pipe (86)
- X-Pipe (223)
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EGR System
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- EGR Gasket (104)
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Exhaust Accessories
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- Flex Joint (31)
- Header Bolt (431)
- Header Gasket (1,354)
- Header Install Kit (9)
- Oxygen Sensor Bung (18)
- Oxygen Sensor Bung Plug (14)
Exhaust Electronics
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- Oxygen Sensor (4,457)
- Oxygen Sensor Wire Harness Extension (39)
Exhaust System Components
- Catalytic Converter (5,784)
- Catalytic Converter Replacement Pipe (88)
- Exhaust Flame Thrower Kit (2)
- Exhaust Insert (36)
- Exhaust Intermediate Pipe (610)
- Exhaust Pipe (3,477)
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- Muffler Disc Only Kit (3)
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- Muffler Repack Kit (7)
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- Muffler Replacement Disc Screw Kit (4)
- Muffler Replacement End Cap (18)
Exhaust Systems
- Axle-Back Exhaust System (251)
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- Complete Exhaust System (768)
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Header, Manifold, and Downpipe
- Exhaust Collector Flange (21)
- Exhaust Collector Gasket (158)
- Exhaust Header (9,714)
- Exhaust Header Collector (579)
- Exhaust Manifold (773)
- Exhaust Manifold Gasket (1,498)
- Exhaust Manifold/Header Flange (555)
- Turbo Downpipe (195)
- Turbo Manifold (78)
- Turbocharger Flange (125)

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160Y from Doug Thorley Headers

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

Brand: Doug Thorley Headers

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

Starting At
$634.00

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160YC from Doug Thorley Headers

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

Brand: Doug Thorley Headers

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

Starting At
$707.00

+ Add To List

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

Brand: Doug Thorley Headers

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

Starting At
$594.00

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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

Brand: Doug Thorley Headers

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

Starting At
$668.00

+ Add To List

315Y-S from Doug Thorley Headers

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

Brand: Doug Thorley Headers

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

Starting At
$562.00

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315Y from Doug Thorley Headers

Thorley Tri-Y Headers Headers - Tri-Y - Steel - Nickel Chrome - Chevy - Class C Motor Home - Small Block - Pair

Brand: Doug Thorley Headers

Part #: 315Y

Starting At
$537.00

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Doug Thorley Headers 4 Into 1 Header

Brand: Doug Thorley Headers

Part #: THY-504-4-C

Doug Thorley Headers fits: 1988-1994 Toyota Pickup, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

Starting At
$380.00

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Doug Thorley Headers 4 Into 1 Header

Brand: Doug Thorley Headers

Part #: THY-490Y

Doug Thorley Headers fits: 1990-1995 Nissan Pickup, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

Starting At
$350.00

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Doug Thorley Headers Tri-Y Header

Brand: Doug Thorley Headers

Part #: THY-555Y-C

Doug Thorley Headers fits: 1988-1994 Toyota Pickup, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

Starting At
$410.00

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Doug Thorley Headers Shortie Header

Brand: Doug Thorley Headers

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.

Starting At
$543.00

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Doug Thorley Headers Tri-Y Header

Brand: Doug Thorley Headers

Part #: THY-123Y-C

Doug Thorley Headers fits: 2008-2009 Dodge Challenger, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

Starting At
$813.95

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Doug Thorley Headers Shortie Header

Brand: Doug Thorley Headers

Part #: THY-336-C

Doug Thorley Headers fits: 2010 Chevy Camaro, 2008-2010 Pontiac G8, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

Starting At
$562.95

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Doug Thorley Headers Tri-Y Header

Brand: Doug Thorley Headers

Part #: THY-542Y-S

Doug Thorley Headers fits: 1981-1984 Toyota Pickup, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

Starting At
$369.00

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Doug Thorley Headers Shortie Header

Brand: Doug Thorley Headers

Part #: THY-508-C

Doug Thorley Headers fits: 2000-2004 Toyota Tundra, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

Starting At
$545.00

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Doug Thorley Headers Tri-Y Header

Brand: Doug Thorley Headers

Part #: THY-399Y3

Doug Thorley Headers fits: 1986-1987 GMC C/K Pickup, 1986-1987 Chevy C/K Pickup, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

Starting At
$640.00

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Doug Thorley Headers Tri-Y Header

Brand: Doug Thorley Headers

Part #: THY-396Y

Doug Thorley Headers fits: 1996-1998 GMC C/K 3500, 1996-1998 GMC C/K 2500, 1996-1998 Chevy C/K 3500, 1996-1998 Chevy C/K 2500, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

Starting At
$557.00

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Doug Thorley Headers Tri-Y Header

Brand: Doug Thorley Headers

Part #: THY-386Y2-DA

Doug Thorley Headers fits: 1988-1995 GMC C/K 3500, 1988-1995 GMC C/K 2500, 1988-1995 GMC C/K 1500, 1988-1995 Chevy C/K 3500, 1988-1995 Chevy C/K 2500, 1988-1995 Chevy C/K 1500, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header,... more

Starting At
$670.00

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Doug Thorley Headers Tri-Y Header - Catalytic Converters Located Under

Brand: Doug Thorley Headers

Part #: THY-385Y1-DA-C

Doug Thorley Headers fits: 1988-1995 GMC C/K 3500, 1988-1995 GMC C/K 2500, 1988-1995 GMC C/K 1500, 1988-1995 Chevy C/K 3500, 1988-1995 Chevy C/K 2500, 1988-1995 Chevy C/K 1500, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header,... more

Starting At
$750.00

+ Add To List

Doug Thorley Headers Tri-Y Header

Brand: Doug Thorley Headers

Part #: THY-383Y1

Doug Thorley Headers fits: 1988-1995 GMC C/K 3500, 1988-1995 GMC C/K 2500, 1988-1995 GMC C/K 1500, 1988-1995 Chevy C/K 3500, 1988-1995 Chevy C/K 2500, 1988-1995 Chevy C/K 1500, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header,... more

Starting At
$685.00

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Doug Thorley Headers Tri-Y Header

Brand: Doug Thorley Headers

Part #: THY-375Y

Doug Thorley Headers fits: 1968-1985 Chevy El Camino, 1968-1985 Chevy Chevelle, 1968-1977 Chevy Nova, 1967-1985 Chevy Camaro, Doug Thorley Headers. Doug Thorley Headers, Doug Thorley Header, Exhaust Headers.

Starting At
$533.00

+ Add To List

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