Doug Thorley Headers Products

All products from this brand (11 total)

Doug Thorley 2.5-Inch Diameter Tube Conical Gasket | THY-9013-2

Doug Thorley D-Port Long Tube Headers with Adapters Pontiac GTO | LeMans | Firebird | Trans Am | Grand Prix 1964-1974 | THY-341-C

Doug Thorley Headers THY-288Y-C Doug Thorley Tri-Y Headers | Summit Racing

Doug Thorley Headers THY-309-S-C Doug Thorley Headers | Summit Racing

Doug Thorley Headers THY-374Y-C Doug Thorley Tri-Y Headers | Summit Racing

Doug Thorley Headers THY-379Y-C

Doug Thorley Long Tube Tri-Y Headers with Adapters Chevrolet | GMC Pickup | Suburban | Blazer | Jimmy 4WD with SMOG Fittings 1973-1991 | THY-304Y-S-C

Doug Thorley Tri-Y Headers with Y-Pipes Ford Class A Motorhome with SMOG Fittings 1993-1995 | THY-214Y-FI4-C

Doug Thorley Weld-On Outlet Short Tube Headers Toyota Tacoma | Tundra | FJ Cruiser | 4Runner | Hilux | Prado 2003-2012 | THY-515-1-C