MBRP FAL401 4" Aluminized Down-Pipe for 1999-03 Ford F-250/F-350 7.3L PowerStrok

Vehicle Fitment

• 1999-2003 Ford F-250 Super Duty (7.3 L PowerStroke diesel)
• 1999-2003 Ford F-350 Super Duty (7.3 L PowerStroke diesel)

Features

• 4.00" mandrel-bent aluminized steel tubing for improved exhaust flow
• Direct-fit down-pipe designed to replace factory turbo outlet flange on 7.3 L PowerStroke
• Helps reduce exhaust back-pressure and lower EGTs under load/towing conditions
• Heavy-duty construction for durability in diesel truck applications
• Bolt-on installation using factory mount points - no major fabrication required
• Compatible with large turbo upgrades and high-flow exhaust systems
• Ideal for diesel performance builds or heavy duty truck use
• Note: Not CARB-approved in many states with strict aftermarket emissions regulations

Specifications

• Part Number: FAL401
• Piping Diameter: 4.00" (≈101.6 mm)
• Material: Aluminized steel (Installer/Armor Lite series)
• Fitment Years: 1999-2003 Ford F-250/F-350 with 7.3 L PowerStroke diesel

Included Components

• 1x 4" aluminized down-pipe assembly
• 1x mounting hardware kit (turbo flange gasket, bolts/nuts) included
• 1x installation instruction sheet

Product Description

The MBRP FAL401 is a high-flow performance down-pipe engineered for the 7.3 L PowerStroke diesel engine found in 1999-2003 Ford F-250 and F-350 Super Duty trucks. Its 4" diameter tubing and mandrel bends reduce flow restrictions, helping improve turbo efficiency and lower exhaust gas temperatures under load - especially useful for towing or heavy duty use.

Constructed from durable aluminized steel and designed for a direct-bolt-on installation using factory mounting points, this down-pipe offers a solid upgrade path for diesel truck owners looking to improve performance or support higher-flow exhaust systems. While built for the 1999-2003 model years listed above, fitment beyond these (for example 2004 or other engine options) is **unconfirmed at the time of listing**, so it is highly recommended to verify compatibility with your vehicle setup before purchase.

Ensure your truck uses the 7.3 L PowerStroke diesel and match the factory turbo outlet flange/fitment. Installation should be performed by a qualified technician, and local emission regulations should be checked - especially in jurisdictions with aftermarket emissions restrictions.