Doug Thorley Headers THY-340-C V8 Headers w/ Y-pipe Chevy 2005-09

Doug Thorley Headers THY-340-C Are you tired of dragging your long tube headers on the ground every time your lowered car hits a bump?

If so, then these headers are for you! Just a little shorter than true long tube headers, we designed these to give you the maximum in performance while keeping them short enough to not smack the ground when the road gets a little bumpy.

Of course, the shorter design makes for a bit easier of an install than long tubes also, you definitely don't need to be lowered to run these.

To make these headers last, we made them out of industry leading 14-gauge tubing with 3/8" thick flanges.

Topping all of that off, all of our headers come beautifully ceramic coated to greatly reduce under-hood temperatures and protect them from the environment. 

All of this 100% American made, and backed by our lifetime warranty of course!

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-340-C

Part Type: Headers

Product Line: Doug Thorley Headers

Header Style: 4:1 Headers 

Material: Steel

Finish: Silver Ceramic Coated

Primary Tube Diameter: 1-3/4"

Primary Tube Gauge: 14 Gauge

Collector Attachment: 2-bolt Flange / Slip-fit

Collector Diameter: 2-1/2"

Tuned: No

Flange Thickness: 3/8"

Bolts and/or Studs Included: Yes

Gaskets Included: Re-use factory manifold gaskets

Y-Pipe (Crossover) Included: Yes

Y-Pipe Inlet Diameter: 2-1/2"

Y-Pipe Outlet Diameter: 3"

Weld Up: Y-pipe outlet must be welded to exhaust inlet

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

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.