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Find Catalytic Converters for your Sierra 2500

Flowmaster 200 Series Catalytic Converter; 2.25-inch Inlet/2.25-Inch Outlet; 49-State Legal (Universal; Some Adaptation May Be Required)

Item HG56870
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation

      Features

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      • Universal 200 Series - 2.25 In. Inlet/Outlet
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      • High Flow 200 Cell Metallic Substrate
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      • Severe-Duty/High Temperature
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      • Stainless Steel Spun Body
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      • Compact Size And Shape
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      • 2.25 In Inlet Diameter
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      • 2.25 In Outlet Diameter
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      • Slip-Fit Inlet And Outlet Connection Type
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      • Pre-OBDII Catalytic Converter Format
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      • Natural Finish
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      • Uses New Hangers (Not Included)
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      • No Clamps Or Mounting Hardware Included
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      • No Oxygen Sensor Port
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      • Max Engine Size 5.7L
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      • Max Gross Vehicle Weight 6000 Lb
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      • Body Shape Round
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      • Body Width 4.00 In
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      • Assembly Length 8.00 In
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      • Assembly Width 4.00 In
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      • Emission Code 4
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      • Stainless Steel Housing Material
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      • Metallic Substrate Material
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      • 3-Way Style
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      • Fits Universal; Some Adaptation May Be Required
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      Description

      Performance Catalytic Converter. The Flowmaster 200 Series Catalytic Converter with 2.25-inch inlet and outlet diameter is 49-state legal and delivers effective emission reduction for racing and vintage vehicles. Designed for severe-duty and high-temperature applications, this converter helps reduce harmful exhaust emissions while maintaining optimal exhaust flow for performance vehicles. It is an essential component for customized Pre-OBDII racing setups and classic cars requiring catalytic converters where none were originally installed.

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      Construction and Appearance. Built with a stainless steel spun body housing a high flow 200 cell metallic substrate, this catalytic converter offers durability and efficiency. The natural finish highlights its compact 4.00-inch diameter by 8.00-inch length design, allowing for easy fitment in tight engine compartments. This premium-grade converter is engineered to withstand severe operating conditions without compromising structural integrity.

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      Installation. Installation is straightforward with slip-fit inlet and outlet connections, intended for welding methods. No drilling is typically required; however, some adaptation may be necessary for specific exhaust configurations on universal applications.

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      Application. Fits Universal; Some Adaptation May Be Required.

      Flowmaster 2000124

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      Installation & What's in the Box

      Installation Info

      Installation Time

      (approx) 2 Hours

      Difficulty Level:

      Light to Moderate mechanical skill required.

      Installation Guides

        No guide available for this part yet.

      What's in the Box

      • (1) Catalytic Converter

      Tech Specs

      5.0

      Customer Reviews (1)

      Questions & Answers

      No questions about this product yet. Ask the First Question