This is our best available header for the supercharged LSJ Cobalt and Ion Redline. It is stainless steel and have 1 3/4" primaries, and is intended for 300+whp supercharged builds. If you are NA, then we recommend our shorty header or the 1 1/2" primary midlength header instead.

• Stainless steel header
• 1 3/4" primaries
• Stainless steel 3/8 header flange
• Stainless downpipe
• Tig welded
• VBand connections
• High flow cat (optional)
• O₂ Extension
• Head to Header Gasket
• Downpipe to Cat-back Gasket

How to order your header/downpipe package:

Transmission: Please select manual or automatic transmission, this determines the proper length of the downpipe.

Downpipe Option: This determines if the downpipe comes with or without a catalytic converter. If the car is driven on the street, then you should order it with a converter.

Catback Flange: This determines what exit flange is installed on the downpipe. If you select "Stock/2.5" then it will come with a 2 1/2" exit flange that will bolt up to the stock catback or most 2 1/2" catback exhausts. If you select "ZZP 3" then it will bolt up to our 3" catback exhaust or most aftermarket 3" catbacks. We do not guaranty fitment on other brand catback exhausts.

Wideband Bung: If you order a downpipe with a cat, then it will come with 1 bung for the rear o2 sensor. If you order it without a cat, then it will come with no o2 bungs. If you have an aftermarket wideband o2 gauge, then you will need to select "add o2 bung for wideband" so you have an extra bung installed for your wideband o2 sensor.

*This header will fit on a 2.2L but can have a clearance issue with a coolant line on the firewall. An easy fix would be to remove the 90 degree turn and connect the hose straight to clear the header.

*06+ Cobalt 2.4L will require a style B O2 extension harness.