Doug Thorley Header

Doug Thorley Headers

THY-312 / 2001-2011 Chevy/GMC 8.1L Motorhome (W-Series Chassis) Long Tube Headers

Doug Thorley Headers

THY-323Y-C / 1967-1987 Chevy/GMC Truck - LS Swap Long Tube TRI-Y Headers 4.8L-6.2L

Doug Thorley Headers

THY-450-C / 1981-1985 Nissan Pickup | 1986-1988 Hardbody | NAP-Z Z24 Engine

Doug Thorley Headers

THY-309-1-C / Universal LS Motor Swap Short Tube Headers 4.8L-6.2L (Rear Swept Exit)

Doug Thorley Headers

THY-361-C / 1961-1964 Chevy Impala - LS Engine Swap Headers 4.8L-6.2L

Doug Thorley Headers

THY-563Y-LS-C / 2005-2009 Toyota 4Runner/ Lexus GX470 4.7L Stainless Steel Long Tube Tri-Y Headers

Doug Thorley Headers

THY-322Y-C / 1961-1966 (& 1987-1991) Chevy/GM Truck - LS Swap Long Tube TRI-Y Headers 4.8L-6.2L

Doug Thorley Headers

THY-324Y-C / 1967-1972 GM C10 Pickup Truck LS Series Motor Swap 4.8L-6.2L (1-5/8" Primary Tubes)

Doug Thorley Headers

THY-288Y-C / Tri-Y Headers with Adapters 1964-1966 Ford Mustang 351W Motor Swap

Doug Thorley Headers

THY-360Y-C / 1955-1960 Chevy/GM 3100 Series Trucks - LS Swap Tri-Y Headers 4.8L-6.2L

Doug Thorley Headers

THY-346-C / 1964-1967 Chevy Chevelle 4.8L-6.2L LS Motor Swap 4-1 Mid-Length Headers

Doug Thorley Headers

THY-364Y-C / 1973-1987 GM Pickup Truck 265-400cu in 4WD (no y-pipe)

Doug Thorley Headers

THY-219-C / 2004-2008 Ford F150/250/350 4.6L V8

Doug Thorley Headers

THY-292Y-C / 1967-1970 Ford Mustang 5.0L Coyote Motor Swap (Automatic Transmission Only)

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THY-224-C / 2015-2019 Ford 150/250/350 5.0L 2WD and 4WD

Doug Thorley Headers

THY-358Y-C / 1955-1957 Chevy Bel Air / Nomad / 210 LS Swap Tri-Y Headers 4.8L-6.2L