Doug Thorley Headers THY-328-C LS Motor Series

Doug Thorley Headers THY-328-C are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire RPM range.

 Their design configuration builds the most power across the rpm range, which is great for everything from street/strip performance, to towing, to steep grades. To make these headers last, Thorley made them out of durable 14-gauge mild steel with 3/8 in. thick flanges and 5/16 in. collector rings and topped them off with a good looking, nickel chrome plated finish. To prevent leaks, these headers have an O-ring welded into the flange, in addition to the high-temperature gasket provided.

Unless otherwise noted, these headers are designed to fit the vehicle as it came from the manufacturer. This includes components like cylinder heads, chassis, steering, motor mounts, body mounts and bushings, etc.

If your vehicle is using aftermarket components, parts from other applications, or custom altered parts, then it is the installer's responsibility to verify fitment.

Brand: Doug Thorley Headers

Manufacturer's Part Number: THY-328-C

Header Style: 4:1 Mid-Length Header

Material: Steel

Finish: Silver Ceramic Coated

Weld Up: No

Primary Tube Diameter (in): 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: No

Reducers Included: No

Y-Pipe (Crossover) Included: No

Y-Pipe Inlet Diameter: N/A

Y-Pipe Outlet Diameter: N/A

Catalytic Converter(s) Included: No

Catalytic Converter Quantity: N/A

Quantity: SOLD AS A PAIR.

WARRANTY:

Doug Thorley Headers carry a lifetime warranty against defects in material and workmanship to the original purchaser. Chrome plated items carry no warranty for finish, other than to be free from defects at the time of purchase, prior to installation. This warranty does not cover damage caused by misuse, abuse, collisions, improper installation, alterations, off-road use, racing use, commercial use, "burn-out" or cracking caused by excessive heat, superchargers, or external heat insulating wrap. Rust or corrosion that occurs after the product is installed is also not covered.