30% Off DTH Chevy

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-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-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-340-C / 2006-2009 Impala SS Monte Carlo SS /05-08 Pontiac Grand Prix FXP 07-09 Buick Lacrosse 5.3L

Doug Thorley Headers

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

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-320-C / 1967-1969 Camaro / 1968-1974 Nova LS series Motor Swap 4.8L-6.2L (1-7/8" Stepped Header)

Doug Thorley Headers

THY-359Y-C / 1978-1988 GM G-Body 4.8L-6.2L LS Motor Swap Tri-Y Headers with Adapters

Doug Thorley Headers

THY-335Y-C / 1962-1967 Chevy 11/Nova LS Motor Swap 4.8L-6.2L (Aftermarket Front Clip with Front Steering Only)

Doug Thorley Headers

THY-379Y-C / 1962-1967 Chevy II / Nova 265-400 SBC Long Tube Tri-Y Headers

Doug Thorley Headers

THY-338-C / 2010-2011 Chevy Camaro 3.6L V6

Doug Thorley Headers

THY-325-C / Sandrail LS Motors 4.8L-6.2L with Bombshell Muffler

Doug Thorley Headers

THY-306Y1-C / 1987-1994 GM Class A Motorhome with Turbo 400 Trans 366-454