Doug Thorley

Optimize Your Exhaust with Doug Thorley

Doug Thorley Headers is a well-respected manufacturer known for its exhaust systems and headers, particularly for American muscle and classic vehicles. With a focus on enhancing engine efficiency and sound, Doug Thorley products are designed to deliver both performance gains and durability. Doug Thorley offers a wide range of headers, including long-tube and shorty designs, crafted from premium materials to optimize exhaust flow and improve horsepower and torque. The company also offers a selection of performance accessory parts, exhaust tips and gaskets, designed to complement their headers and exhaust systems for a complete performance upgrade. Shop your favorite Doug Thorley exhaust products here at CPP.

LS Engine Install Kit W/Headers for 64-67 Chevy, Buick, Olds, Pontiac A-Body
64-67 Chevy, Buick, Olds, Pontiac A-Body, Includes Oil Pan, Engine Stands, Adjustable Engine Mounts, Transmission Cross Member, Doug Thorley Ceramic Coated THY-346-C Headers, W/Polyurethane Mounts
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Part # 6467LS1-FRK

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C10 LS Engine Install Kit W/Headers High or Low A/C Mounts
67-72 C10, Includes Engine Stands, Adjustable Engine Mounts (High or Low A/C Mounts), Transmission Cross Member, Doug Thorley Ceramic Coated THY-323Y-C Headers, W/Polyurethane Mounts
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Part # 6772LS1-FRK

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Chevy Truck LS Engine Install Kit W/Headers for63-66 Chevy Truck Includes Engine Stands
63-66 Chevy Truck Includes Engine Stands, Adjustable Engine Mounts (High or Low A/C Mounts), Transmission Cross Member, Doug Thorley Ceramic Coated THY-322Y-C Headers, W/Polyurethane Mounts
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Part # 6366LS1-FRK

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Chevy Truck LS Engine Install Kit W/Headers for73-87 Chevy Truck Includes Engine Stands
73-87 Chevy Truck Includes Engine Stands, Adjustable Engine Mounts (High or Low A/C Mounts), Transmission Cross Member, Doug Thorley Ceramic Coated THY-322Y-C Headers, W/Polyurethane Mounts
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Part # 7387LS1-FRK

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Doug Thorley Tri-Y Headers for 2008-10 Lexus Lx570
for 2008-10 Lexus Lx570, 5.7L, 2/4Wd (With Air Injection Chevy Truck, "Race"
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Part # THY-560Y2-L-C

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$981.72
Doug Thorley Tri-Y Ceramic Headers for 1962-67 Chevy II, Nova M2 IFS
1962-67 Chevy II, Nova M2 IFS
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Part # THY-335Y-C

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$1,095.00
Doug Thorley Tri - Y Headers for 1973-89 GM Pick Up
1973-89 GM P/U, Suburban 366-454 2Wd Big Block V8
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Part # THY-303Y-C

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$1,031.74
Doug Thorley Long Tube Tri-Y Headers 2014 Silverado/Sierra
2014 Silverado/Sierra (Race Use Only)
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Part # THY-352Y-L-C

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$1,408.00
Doug Thorley Ls Headers for 1955-57 Chevy Fullsize
1955-57 Chevy Fullsize
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Part # THY-358Y-C

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$1,195.00
Doug Thorley Short Tube Headers for 2005-09 Toyota 4 Runner
2005-09 Toyota 4 Runner
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Part # THY-563-SS-C

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$1,284.00
Doug Thorley Long Tube Header 4:1 (1-3/4" To 1-7/8") for 1967-74 Camaro
1967-69 Camaro, LS-Series Motor Swap, 4.8L-6.2L
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Part # THY-320-C

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$1,095.00
Doug Thorley Long Tube Headers 3:1 Race Only
Race Only (See More Information For App.)
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Part # THY-465-L-C

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$795.00
Doug Thorley Short Tube Headers for 2006-09 Impala and 2005-08 Monte Carlo SS
2006-09 Impala and 2005-08 Monte Carlo SS
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Part # THY-340-C

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$1,176.00
Doug Thorley Tri-Y Headers for 1967-72 Chevy / GM Trucks with LS Engine
1967-72 Chevy / GM Trucks with LS Engine 1-5/8" Primaries All LS (Except LS7)
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Part # THY-324Y-C

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$1,095.00
Long Tube Tri-Y Headers for 2009-12 Chevy/GMC Canyon
2009-12 Chevy/GMC Canyon
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Part # THY-344Y-C

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$995.00
Doug Thorley Tri-Y Header for 1993-99 Jeep Grand Cherokee
1993-99 Jeep Grand Cherokee, 5.2L-5.9L, 2/4Wd
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Part # THY-630Y-C

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$1,198.93
Doug Thorley Shortie Header without exterior EGR tube for 1995-04 Toyota Tacoma/4Runner/Tundra
1995-04 Toyota Tacoma/4Runner/Tundra, 3.4L, 2/4Wd
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Part # THY-507-C

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$1,195.00
Doug Thorley Headers Ls Series 1-3/4" Primary Tube for 1964-67 Chevelle
1964-67 Chevelle
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Part # THY-346-C

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$995.00
Doug Thorley Long Tube Headers 3:1 4-Wheel Drive (4WD)
4Wd Only (See More Information For App.)
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Part # THY-505-C

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$1,195.00
Doug Thorley Shortie Header for 2002-13 GM Silverado
2002-13 GM Silverado/Sierra, Suburban, Tahoe/Yukon, Hummer H
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Part # THY-309-C

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$635.91
Doug Thorley Block Hugger Headers Universal
Universal Header Center Dump, LS Series Motors, 4.8L-6.2L
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Part # THY-326-C

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$895.00
Doug Thorley Shortie Header for 2005-14 Nissan Frontier
2005-14 Nissan Frontier/Pathfinder/Xterra/Equator/Navara
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Part # THY-470-L-C

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$749.00
Doug Thorley Tri-Y Headers for 2007-14 Toyota Tundra
2007-14 Toyota Tundra, 5.7L, 2/4Wd ("Race" Use Only)
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In Stock

Part # THY-560Y-L-C

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$1,421.00
Doug Thorley Headers 4:1 3/4 for 1964-87 Chevelle/El Camino
1964-87 Chevelle/El Camino - Small Block Chevy
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Part # THY-380Y-C

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$816.00
Doug Thorley Tri-Y Headers for 1961-87 Chevy Truck
1961-87 Chevy Truck 283-400 Suburban, Blazer/Jimmy
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Part # THY-300Y-C

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$1,195.00
Doug Thorley Headers, Stainless Steel Headers
05-09 Lexus GX470, 4Runner, 1 5/8th Tubes, 2.5" Collector, Off-road use Only
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Part # THY-561-SS-C

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$975.00
Long Tube Headers (Race Use Only) for 2013-14 Toyota Cruiser
2013-14 Toyota Cruiser
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Part # THY-518-LS-C

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$626.00
05-09 Toyota 4-Runner Tri-Y Headers
Long Tube Stainless Steel
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Part # THY-563Y-LS-C

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$1,284.00
Doug Thorley Ls Headers Silver Ceramic for 1961-64 Chevy Fullsize
1961-64 Chevy Fullsize
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Part # THY-361-C

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$825.00
Doug Thorley Headers Ls Series 1-3/4" Primary Tube for 1968-74 Chevelle/El Camino
1968-74 Chevelle/El Camino
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Part # THY-347-C

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$995.00
Doug Thorley Tri-Y Headers for 1967-72 Chevy / GM Trucks with Small Blocks
1967-72 Chevy / GM Trucks with Small Block Chevy "No D Ports"
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In Stock

Part # THY-372Y-C

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$1,032.00
Doug Thorley Tri-Y Headers for 1973-87 GM Truck 1/2 Ton and 1973-91 GM Truck 3/4 & 1 Ton
1973-87 GM Truck 1/2 Ton and 1973-91 GM Truck 3/4 & 1 Ton
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Part # THY-364Y-C

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$1,195.00
Doug Thorley Tri-Y Header for 1988-98 Suzuki Samurai/Geo Tracker
1988-98 Suzuki Samurai/Geo Tracker, 1.6L (16 Valve)
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Part # THY-716Y-SS

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$496.00
Doug Thorley Ls Series Tri-Y Headers for 1955-60 GM Truck 3100 Series
1955-60 GM Truck 3100 Series
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Part # THY-360Y-C

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$1,095.00
Doug Thorley Tri-Y Header for2012-14 Nissan Patrol
2012-14 Nissan Patrol/Safari/Infiniti Qx56, 5.6L, 2/4Wd
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Part # THY-481Y-LS-C

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$913.13
Doug Thorley Tri-Y Header 2011-13 Lexus Lx570
2011-13 Lexus Lx570, 5.7L, 2/4Wd (With O Air Injection Chevy Truck, "Race"
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In Stock

Part # THY-560Y3-L-C

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$803.10

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