Jeep Cherokee 5.9L 1980-1983, 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". Emissions: CARB compliant. 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. Doug's headers are designed to outflow your stock exhaust manifolds by leaps and bounds. Their headers will increase the power of your motor across the widest RPM band possible. That is the beauty of the design, and that is why they are the best street header available.
Fitment notes: This is a CARB compliant part, legal for use on vehicles built to meet CARB standards and/or registered in California and other states which follow CARB standards.
|Header Material: Steel|
|Primary Diameter: 1.625"|
|Collector Diameter: 2.5"|
|Emissions: CARB compliant|
|Attachment Method: 3 Bolt Flange|
|Header Style: 4:2:1 Tri-Y Header|
|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"|
|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|
- High quality at an affordable price
- Expertly made from premium materials
- Built to match your exact requirements
Doug's Long Tube Headers replace restrictive stock exhaust manifolds with long primary tubes designed to dramatically increase the flow of exhaust gasses, and reduce power robbing back pressure within the exhaust system. Allowing the engine to breathe more freely improves power and efficiency, making Doug's Long Tube Headers one of the most cost-effective modifications you can make to your vehicle.
The Long Tube Header is perfect for any high performance street or strip application. Each header is constructed from thick wall steel, and all come finished with Doug's beautiful ceramic coating for long-lasting performance.
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.