The stock downpipe necks down right off the turbo, so even a free flowing cat back cannot do its job. Replace it with the MBRP DS9401 4 inch downpipe for more flow where it counts. It fits 1994-2002 Dodge Ram 2500 and 3500 with the 5.9L Cummins, 12 valve and 24 valve.

Construction: 4 inch T409 stainless steel, built to last as long as you own the truck. No core charge applies to this part.

Key Features & Benefits

• Flow: Opens the first section of exhaust behind the turbo to drop EGT and help spool.

Technical Specifications

• Manufacturer/Brand: MBRP
• Part Number/SKU: DS9401 (mbrDS9401)
• Product Type: 4 Inch Stainless Steel Downpipe
• Construction: 4 inch T409 stainless steel, built to last as long as you own the truck.
• Truck Compatibility: 1994-2002 Dodge Ram 2500 and 3500 with the 5.9L Cummins, 12 valve and 24 valve
• Engine Platform: 5.9L 12V / 24V Cummins
• Core Requirement: No core required

Vehicle Fitment & Technical Installation Notes

Fits 1994-2002 Dodge Ram 2500 and 3500 with the 5.9L Cummins, 12 valve and 24 valve.

Installation Tip: Check that the rest of your exhaust is 4 inch or adapted to it.