Father’s Day Sale – Up to 40% Off! Shop Now >

Find Catalytic Converters for your Sierra 3500

Flowmaster 200 Series Catalytic Converter; 2-inch Inlet/2-Inch Outlet; 49-State Legal (Universal; Some Adaptation May Be Required)

Item SHG56123
Sale
On Sale

-10% $96.26 each Was $106.95

Military, Medical & First Responders $4.81 Available in AT Cash Rewards.
Confirm Eligibility

Save with Open Box

From $64.17

Choose options to add to cart.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Shop Owners Save More! Sign up for our dealer program

      Product Information

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

      Features

        _x000D_
      • Standard Duty
      • _x000D_
      • Metallic Substrate Material for Severe Duty Applications
      • _x000D_
      • Meets All EPA 49-State Requirements
      • _x000D_
      • 25,000 Mile Performance/Emissions Warranty
      • _x000D_
      • 5 Year/50,000 Mile Case Warranty
      • _x000D_
      • Stainless Steel Housing
      • _x000D_
      • Flowmaster Quality
      • _x000D_
      • Compact 4.00-Inch Diameter x 8.00-Inch Length Spun Outer Casing
      • _x000D_
      • 2.00-Inch Inlet/Outlet Diameter Connections
      • _x000D_
      • Designed for Pre-OBDII Racing Applications
      • _x000D_
      • Intended for Vintage Hot Rods or Vehicles Without Factory Catalytic Converters
      • _x000D_
      • Not for On-Highway Compliance Programs
      • _x000D_
      • Not Legal for Sale or Use in California
      • _x000D_
      • May Not Be Legal in States That Follow CARB Regulations
      • _x000D_
      • Slip-Fit Weld-On Inlet and Outlet Connections
      • _x000D_
      • Uses New Hangers (Not Included)
      • _x000D_
      • No Oxygen Sensor Port
      • _x000D_
      • Natural Stainless Steel Finish
      • _x000D_
      • Maximum Engine Size 5.7L
      • _x000D_
      • Maximum Gross Vehicle Weight 6,000 lbs
      • _x000D_
      • Three-Way Catalyst Style
      • _x000D_
      • Fits Universal; Some Adaptation May Be Required
      • _x000D_

      Description

      High-Performance Catalytic Converter. The Flowmaster 200 Series Catalytic Converter with 2-inch inlet and outlet is engineered to provide efficient emission control for a wide range of custom automotive applications. It is designed primarily for racing use and vintage vehicles requiring an effective emission control solution where factory catalytic converters were not originally installed. This converter helps reduce harmful emissions while supporting severe-duty and high-temperature environments.

      _x000D__x000D_

      Construction and Appearance. Built with a compact spun stainless steel outer shell, this catalytic converter features a high flow 200 cell metallic substrate designed for durability in demanding conditions. The natural stainless steel finish provides corrosion resistance and a clean, professional look, ensuring long-lasting performance.

      _x000D__x000D_

      Installation. Installation is straightforward with slip-fit weld-on inlet and outlet connections that do not require drilling. The compact size and shape allow for ease of fitting in tight spaces, though some adaptation and custom mounting may be necessary to achieve proper fitment.

      _x000D__x000D_

      Warranty. This catalytic converter includes a 25,000-mile performance and emissions warranty along with a 5-year or 50,000-mile case warranty, providing assurance of quality and durability.

      _x000D__x000D_

      Application. Suitable for universal applications with some adaptation required. This converter is intended for Pre-OBDII racing or vintage vehicle use and is not legal for street use in California or other states with CARB regulations.

      Flowmaster 2000120

      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