The MBRP S6289409 is a 4 inch filter-back exhaust for 2017-2026 Ford F-250, F-350 and F-450 Super Duty trucks with the 6.7L Powerstroke. It replaces the factory exhaust behind the diesel particulate filter with a single side exit layout from MBRP's Armor Plus line.

It is built from T409 stainless steel with CNC mandrel-bent tubing that holds a constant 4 inch diameter through every bend. It bolts in at the OEM hanger locations with no welding, and the kit includes the clamps and hardware.

• 4 Inch Mandrel-Bent Tubing: Constant diameter through every bend for smooth flow.
• T409 Stainless Steel: Stainless steel that stands up to salt and weather.
• Bolt-On Install: Uses the OEM hanger locations, no welding required.
• Polished Tip: A 5 inch mirror-polished T304 stainless tip.
• Complete Kit: Clamps and installation hardware included.

Technical Specifications

• Part Number: S6289409
• Tubing: 4 inch T409 stainless steel
• Type: Filter-back (DPF-back), single side exit
• Tips: 5 inch mirror-polished T304 stainless tip
• Series: Armor Plus
• Warranty: Lifetime (per MBRP)
• Core Requirement: No core required

Vehicle Fitment & Technical Installation Notes

• Fitment: 2017-2026 Ford F-250/F-350/F-450 6.7L Powerstroke, all cab and bed configurations. Not for cab and chassis models.
• Installation Tip: Vehicles with a 35 inch spare tire may need to relocate the spare. Check the clearance between the tailpipe and the spare before you tighten everything down.