DOUG THORLEY Tri-Y 4:2:1 Long Tube Headers, 1-3/4" x 3" x 2-1/2" (GM G-Body LS)

Header Style: 4:2:1 Tri-Y
Material: Steel
Finish: Silver Ceramic Coated
Weld Up: No
Primary Tube Diameter: 1-3/4"
Primary Tube Gauge: 14 Gauge
Collector Attachment: 3 Bolt Flange
Collector Diameter: 3"
Tuned: No
Flange Thickness: 3/8"
Bolts and/or Studs Included: Yes
Gaskets Included: Yes
Adapters/Reducers Included: Yes, 3"– 2-1/2"
Y-Pipe (Crossover) Included: No
Y-Pipe Inlet Diameter: No
Y-Pipe Outlet Diameter: No
Catalytic Converter(s) Included: No
Quantity: Sold as a Complete Kit
CARB E.O. #: NOT LEGAL FOR STREET USE ON POLLUTION CONTROLLED VEHICLES
Warranty: Limited Lifetime to original purchaser

1978-87 El Camino / Caballero / Buick Regal / Pontiac Grand Prix
1978-83 Malibu
1978-88 Monte Carlo / Cutlass
1982-86 Pontiac Bonneville