MBRP DALHX40 4" Down-Pipe for 1994-2002 Dodge Ram 2500/3500 5.9L Cummins HX40

Vehicle Fitment

• 1994-2002 Dodge Ram 2500/3500 (5.9L I6 Cummins, HX40 turbo outlet)

Features

• 4.00" mandrel-bent tubing for enhanced exhaust flow
• Direct-fit down-pipe built specifically for HX40 turbo outlet applications
• Aluminized steel construction for value-oriented durability
• Up to ~20% greater flow than stock down-pipe design
• Bolt-on installation using factory mounting points - minimal fabrication
• Optimized to support turbo spool-up and lower exhaust gas temperatures (EGTs)
• Compatible with aftermarket turbochargers/outlets that use HX40 flange design
• Not CARB-legal in California or states with equivalent emissions regulation

Specifications

• Part Number: DALHX40
• Piping Diameter: 4.00" (≈101.6 mm)
• Material: Aluminized steel (Installer/Armor-Lite series)
• Fitment Years: 1994-2002 Dodge Ram 2500/3500 5.9L Cummins with HX40 turbo outlet
• Warranty: Three (3) year limited warranty on aluminized steel version

Included Components

• 1x 4" down-pipe assembly (aluminized steel)
• 1x V-band or turbo-outlet clamp/hardware kit
• 1x installation instruction sheet

Product Description

The MBRP DALHX40 down-pipe is engineered for the Dodge Ram 2500/3500 trucks equipped with the 5.9 L Cummins engine and an HX40-series turbo outlet (1994-2002). With its full 4.00" aluminized steel tubing and direct-fit design, it improves exhaust flow, reduces back-pressure and assists in lowering exhaust gas temperatures - helping to improve turbo performance and overall durability.

This kit is ideal for diesel truck enthusiasts performing turbo upgrades, heavy-duty towing builds or full exhaust system enhancements. Its bolt-on fitment for the HX40 flange makes the installation straightforward for qualified technicians. Because fitment is verified only through 2002, usage on later years or other turbo outlets requires additional verification.

Always confirm your turbo outlet flange is HX40 style and the engine is the 5.9 L Cummins I6 before purchasing. Local emissions regulations should be checked given the product is not CARB-legal in California or similar jurisdictions.