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Flowmaster Direct-Fit Catalytic Converter - Right (04-08 5.4L 4WD F-150)

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Features & Details

  • Right/Passenger Side Catalytic Converter
  • 49 State Legal
  • Stainless Steel Construction
  • Clamp-On Connection
  • 25,000 Mile Warranty on Internal Components
  • 50,000 Mile / 5 Year Warranty on Exterior Casings
  • Designed for 4WD Models
  • Fits 2004-2008 5.4L V8 F-150s
Direct Fit. Flowmaster's Catalytic Converter makes life little bit easier when you are in need of a new catalytic converter for your 5.4L 4WD F-150. Flowmaster designed this part to be a direct replacement for the right/side cat. So when you to need to replace your worn out or rusty cat before the next emission test, you can feel confident that this replacement will provide reliable and long lasting performance.

Quality Construction. Flowmaster constructs this Right/Passenger Side Catalytic Converter from stainless steel for durability and improved air flow. It is equipped with ceramic substrate to ensure long lasting performance.

Installation. This Direct Fit Catalytic Converter utilizes factory hangers, for a quick and painless installation that won't require modification. It features a clamp-on style outlet and includes a flanged inlet for easy installation.

Warranty. Flowmaster backs this Catalytic Converter with a 25,000 Mile Warranty on internal components, as well as a 50,000 Mile / 5 Year Warranty on exterior casings. Some exclusions apply, please see manufacturer's warranty for full details.

49 State Legal. This Right/Passenger Side Catalytic Converter is legal for use in 49 states. It meets or exceeds requirements set by the USEPA for 49 states only and is not legal for use or sale in California. If your state has adopted part or all of California emission standards, please check your local laws on replacement catalytic converter requirements.

Application. Flowmaster's Right/Passenger Side Catalytic Converter is designed to fit the 2004-2008 5.4L F-150s equipped with four wheel drive (4WD). Does not fit the 2004 Heritage Edition model.

Fitment: 2004 2005 2006 2007 2008 Details

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) Right Side Catalytic Converter
Installation Info
Will it fit my F-150?

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Customer Reviews (4) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Full Day

Installation Cost:0-$100

  • Loudness / Volume 4 4
  • Exhaust Note 5 5
  • Fit & Finish 4.666667 4.7
  • Bang For Your Buck 4.666667 4.7

  • 5/5

    Installation Time: Afternoon

    January 23, 2019

    Easy installation

    Direct bolt on I like the fact that it done away with one converter it seems to flow good it made my truck a little louder witch I don't mind I paired it with a new exhaust it sounds amazing gave my truck a deep tone I get time I'm going to change the left side cat to match


    Year: 2004 Submodel: FX4 Engine: 5.4L V8

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    May 24, 2018

    2004 F150

    Replaced my cats with these and what an improvement in sound and fuel economy and performance. If it time to replace your cat's then these are the way to go!


    Year: 2004 Submodel: FX4 Engine: 5.4L V8

    Helpful (6)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    September 23, 2016


    They are a bit louder, I believe, because I replaced 2 converters on each side with just 1 on each side


    Engine: 5.4L V8

    Helpful (6)

  • 5/5

    July 29, 2016

    sounds great

    these cats sound great with the rest of my setup if only i didn't need cats at all in my state


    Engine: 5.4L V8

    Helpful (6)

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