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Sales & Service Hours

Sales & Service Hours


Customer Service

  • Monday to Friday: 8am - 6pm EST
  • Saturday/Sunday: Closed


  • Monday to Saturday: 8am - midnight EST
  • Sunday: 9am - 10pm EST

Extended and Holiday Hours

  • Thursday Nov 24th: Closed
  • Friday Nov 25th: 7am - 12am EST
  • Saturday Nov 26th: 8am - 12am EST
  • Sunday Nov 27th: 9am - 10pm EST
  • Monday Nov 28th: 7am - 12am EST


Customer Service

  • Monday to Friday: 8am - 6pm EST
  • Saturday/Sunday: Closed


  • Monday to Saturday: 8am - midnight EST
  • Sunday: 9am - 10pm EST

MBRP Turbo Down Pipe FS9401

Product Information
List Price:
Sale Price:
Now 10% off, hurry limited time offer!
Part #:
4" Tubo Down Pipe
T-409 Stainless Steel
1999-2003 Ford F250, 7.3L V8 Powerstroke
1999-2003 Ford F350, 7.3L V8 Powerstroke
  • Not legal in California, or other states adopting CARB emission standards


  • Allows for up to 20% greater flow over stock
  • Allows turbo to spool up quicker, increasing throttle response
  • Designed to maintain a safe EGTs
  • Custom designed for each make and model of truck
  • Creates a richer exhaust note
  • Greater heat retention
  • Bolt on installation using factory mounting points
  • Available in T-409 stainless steel and aluminized steel
  • Stainless pipes are backed by a lifetime warranty, and aluminized are backed by a three year warranty

Some people are just never satisfied. They always feel the need to be tinkering and trying new things. The folks at MBRP understand this and now they are going to feed your addiction. They are now offering a full line of exhaust system accessories for your diesel pickup truck. Whether you drive a Cummins, Duramax, or Powerstroke; MBRP gives you the option to tune your exhaust to your own personal preference. They offer a complete line of delete pipes for those who need a completely straight through exhaust with minimal restriction. MBRP is one of the only companies to offer a delete pipe for dual exhaust systems that offers quick and easy installation. Also available are cat delete pipes, down pipes, hangers, and high flow mufflers assemblies. Pieces are available in either Aluminized Steel and T304 or T409 Stainless Steel. All accessories are precisely bent for a perfect fit that is vehicle specific.

View Available Part Numbers For This Product Line


Limited Lifetime SS / 3 Years Black / 3 Years Aluminized Steel / 1 Year on Ceramic Coating

409 stainless steel systems - limited lifetime warranty

Aluminized steel systems - Three (3) years

Black ceramic coated aluminized steel systems - Three (3) years for the components and One (1) year for the ceramic coating

Remember: You MUST send your warranty card and a proof of purchase to MBRP to activate your warranty. All warranties are from the date of purchase


MBRP turbo downpipes are specifically designed for your diesel engine, meaning that installation is a bolt-on, no modification affair. If you have any questions, give our helpful customer service team a call at 877-216-5446.