Header Style: 4:2:1 Tri-Y Header 
Material: T304 Stainless Steel
Finish: Silver Ceramic Coated
Primary Tube Diameter: 1-1/2"
Primary Tube Gauge: 14 Gauge
Tuned: No
Collector Attachment: 3-Bolt Flange
Collector Diameter: 2-1/2"
Weld Up: Yes, Adapter must be welded to exhaust system
Flange Thickness: 3/8"
Bolts and/or Studs Included: Yes
Gaskets Included: Yes
Adapter/Reducer Included: Yes
Y-Pipe (Crossover) Included: No
Catalytic Converter(s) Included: No
Quantity: Sold as a Complete Kit
CARB E.O. #: D-540-5
Warranty: Limited Lifetime to original purchaser

Notes: This complete tri-y header kit will really wake up the motor on your 4.0L Jeep. Tri-Y (or 4 into 2 into 1) style headers by design 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. We have also manufactured this header from T304 stainless steel so that we can offer you the highest quality header on the market, and cracked manifolds will never be an issue for you again. All of this 100% American made, and backed by our lifetime warranty!