EPA Ultra Direct Fit Converter
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Walker EPA Ultra Direct Fit Converter

Part No. 55476 Warranty Details  
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Disclaimer: This product is not authorized to be shipped/picked-up CA.

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Walker® an industry leader for import and domestic applications, offers Walker® Ultra® Direct Fit Catalytic Converters designed for OBDII (1996 and newer) vehicles. They are engineered for specific vehicle emissions requirements, and feature a high load of precious metals, optimal substrate content, and a high technology washcoat to provide premium performance, and durability to comply with EPA emissions requirements.

Product Features:
  • Designed for use on OBDII (1996 and newer) vehicles
  • Flange to flange, direct fit design bolts to existing exhaust
  • High precious metal load and high technology washcoat for premium performance
  • Stainless steel body with aluminized pipe and heat shields for durability
  • Thick OE-style flanges, hangers and brackets for enhanced strength
  • OE-style routing and hanger position for easy installation
  • 25,000-mi catalytic performance & 5-year/50,000-mi structural integrity warranty
  • Meets EPA emissions requirements
  • Not legal for sale in California
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Body Length:9.000 in
Body Shape:Round
Body Width:4.125 in
Height:4.125 in
Overall Length:48.500 in
Substrate Material:Ceramic


by PowerReviews
WalkerEPA Ultra Direct Fit Converter

(based on 1 review)

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Reviewed by 1 customer

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(1 of 1 customers found this review helpful)


Direct Fit Walker Catalytic


from Appleton, WI

About Me Casual Driver

Verified Buyer


  • Easy To Install


    Best Uses

    • Replacement

    Comments about Walker EPA Ultra Direct Fit Converter:

    Overall a great purchase!

    Displaying review 1

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    Do you have questions about this product?


    Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

    4 Questions | 4 Answers
    Displaying questions 1-4
    • Q:

      Does this come with gasket?
      Asked on 6/11/2015 by Boss from MD

      1 answer



        Hi Boss! This Walker Direct-Fit Catalytic Converter - Part No. 55476 does not come with the gasket. Please provide us with the details of your application (including the year, make and model) and I will be happy to provide you with the correct product that can be used if available.

        Answered on 6/12/2015 by Solomon
    • Q:

      Does this item come with flange bolts?
      Asked on 4/11/2014 by Jim from Valley Grove WV

      1 answer



        Hello Jim, This Direct-Fit Catalytic Converter does not include exhaust flange bolts and would have to be purchased separately.

        Answered on 4/11/2014 by Wil from AAP
    • Q:

      It says this is for the Envoy XL. But then says it fits the 113 inch wheelbase. The XL is the longer wheelbase envoy, 129 inches. So will this fit on the 129 inch envoy xl?
      Asked on 10/25/2013 by Mark from Charlotte, NC

      1 answer



        Hi Mark, this Walker Direct-Fit Catalytic Converter - part# 55476 is for GMC Envoy with 113" wheel base. Please check the Walker Converter - Ultra Direct Fit - part# 55477 which would be an exact fit for your GMC Envoy XL with 129" wheel base.

        Answered on 10/25/2013 by Vincent from AAP
    • Q:

      does Part No. 55476 require gaskets or any other parts to be purchased in order to install on my 2003 chvy trailblazer?
      Asked on 4/23/2013 by SantaClaus from St Charles, Mo

      1 answer



        The Walker Direct-Fit Catalytic Converter (Part No. 55476) is engineered with durable stainless steel bodies, original equipment style design features, including hangers, flanges, decouplers, and brackets for precision fit. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

        Answered on 4/24/2013 by Steve from AAP
    Displaying questions 1-4

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