Product Details
4-1 Steel Short Tube Exhaust Headers by Doug Thorley Headers®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". Header Style: Short Tube. Backed by over 50 years of knowledge and experience, Doug's headers are designed to outflow your stock exhaust manifolds by leaps and bounds. These headers will give your engine more horsepower and torque, no doubt about it! To make these headers last, Doug's made them out of industry leading 14-gauge mild steel tubing with 3/8" thick flanges. To top all of that off, all of Doug's headers come beautifully ceramic coated to greatly reduce under-hood temperatures and protect the headers from the environment. All of this 100% American made, and backed by Doug's 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.
Specifications
| Style: 4-1 |
| Header Material: Steel |
| Header Style: Short Tube |
| Primary Diameter: 1.625" |
| Collector Diameter: 2.5" |
| Header Style: 4:1 Shortie Header |
| Material: Steel |
| Finish: Silver Ceramic Coated |
| Weld Up: Yes, adapters must be welded to exhaust system |
| Primary Tube Diameter: 1-5/8" |
| Primary Tube Gauge: 14 Gauge |
| Collector Attachment: 3-Bolt Flange |
| Collector Diameter: 2-1/2" |
| Tuned: No |
| Flange Thickness: 3/8" |
| Hardware Included: Yes |
| Gaskets Included: Yes |
| Reducers/Adapters Included: Yes |
| Y-Pipe (Crossover) Included: No |
| Catalytic Converter(s) Included: No |
| Warranty: Limited Lifetime to original purchaser |
Features
- Compact design - great for tight spaces
- Tough 0.375" flanges and thick wall steel tubing
- Compliant with the toughest emission standards
- Super easy installation
- 100% Made in America
- Durable ceramic coating
- Driven by a passion for performance and superior quality
- Designed to maximize horsepower and torque of your vehicle
- Made with meticulous attention to detail and unmatched craftsmanship
Modern engine compartments are crowded spaces, and seem to be getting even more crowded with every new year. That's why we've developed Doug's Shortie Headers to provide maximum performance in a compact, easy to install package. Doug's Shortie Headers replace restrictive stock manifolds with thick wall steel tubing for increased exhaust flow, but retain the factory mounting locations for emissions equipment to keep you street legal.
The Shortie Header works great in applications where space is limited, and a Long Tube or Tri-Y header just won't fit. Easy installation, more power and better fuel economy make the Shortie a winner.
For over 50 years, Doug Thorley Headers has been an innovator in the automotive aftermarket. Driven by a passion for performance and superior quality, they are committed to developing 100% American-made products that will reliably deliver maximum horsepower and torque. Doug Thorley Headers® has been pushing the limits of automotive technology since they first invented the Tri-Y header in 1958, and they do it all on American soil.