The Irate Diesel T4 downpipe is a two-piece 4 inch downpipe built for Irate Diesel's T4 turbo mounting kits on the 7.3L Powerstroke. Choose the OBS 1994-1997 or Super Duty 1999-2003 version for your truck.

Each version is made for either an S300 or S400 frame turbo and works with all of their turbine housings. It only fits trucks with the Irate T4 mount, not the factory turbo pedestal.

• 4 Inch Tubing: Large diameter to match the flow of an S300 or S400 turbo.
• Two-Piece Design: Easier to fit between the turbo and the rest of the exhaust.
• Made for the Irate T4 Mount: Lines up with the Irate Diesel T4 turbo kit.
• S300 or S400 Versions: Built to match the turbo frame you run.
• Fits All Housings: Works with all S300 and S400 turbine housings.

Technical Specifications

• Part Numbers: IDP-DP300OBS, IDP-DP400OBS, IDP-DPSD300, IDP-DPSD400
• Manufacturer: Irate Diesel Performance
• Tubing: 4 inch
• Configuration: Two-piece downpipe
• Turbo Frames: BorgWarner S300 or S400
• Core Requirement: No core required

Vehicle Fitment & Technical Installation Notes

• Fitment: 1994-1997 OBS and 1999-2003 Super Duty Ford 7.3L Powerstroke with the Irate Diesel T4 turbo mount only.
• Installation Tip: Select the version that matches both your truck (OBS or Super Duty) and your turbo frame (S300 or S400) so the outlet lines up with the turbine housing.