Product Details
Jeep Grand Wagoneer 1990, Steel 4-2-1 Tri-Y Exhaust Header Kit with Y-Pipes by Doug Thorley Headers®. Primary Tubing Diameter: 1.625". Collector Outlet Diameter: 2.5". This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost.
Specifications
| Header Material: Steel |
| Primary Diameter: 1.625" |
| Collector Diameter: 2.5" |
| Attachment Method: 3 Bolt Flange |
| Collector Attachments: 3 Bolt Flange |
| Header Style: 4:2:1 Tri-Y Header |
| Material: Steel |
| Finish: Silver Ceramic Coated |
| 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" |
| Bolts and/or Studs Included: Yes |
| Gaskets Included: Yes |
| Adapters/Reducers Included: No |
| Y-Pipe (Crossover) Included: Yes |
| Y-Pipe Inlet Diameter: 2-1/2" |
| Y-Pipe Outlet Diameter: 3" |
| Catalytic Converter(s) Included: No |
| Weld Up: Y-pipe outlet must be welded to exhaust system |
| Quantity: Sold as a Complete Kit |
| Warranty: Limited Lifetime to original purchaser |
Features
- Made to provide unequaled quality and reliability
- Made with the use of the latest technologies
- Guaranteed to provide ultimate strength and durability
The Tri-Y Headers is designed with an emphasis on maximum low and mid range torque, while making ample horsepower throughout the RPM range. The 4:2:1 Tri-Y headers design makes it the ideal choice for trucks, tow-rigs, RV's and most street applications. The collector design makes this header one of Doug's most efficient, which means you'll see improvements both on the dyno and at the pump.
A Doug Thorley Headers original design, the 4:2:1 collector specification on the Tri-Y Headers is engineered to match your engine's firing order and thereby maximize exhaust scavenging - the complete expulsion of gasses on the exhaust stroke. The Tri-Y design creates more usable power and torque than any other headers design, making it the headers of choice for enthusiasts who want the most bang for their buck.
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.