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GMC Sierra 2500 Catalytic Converter

We have 8 Items In-stock. Select a year to continue.
$341.38 List Price $402.83 Save $61.45 Availability: In Stock
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EASTERN ECO II SERIES CATALYTIC CONVERTER

Specifications:

  • With oxygen sensor port provision
  • Y-pipe assembly
  • 30 years of innovation is proof enough that Eastern is the best manufacturer of the finest aftermarket and original equipment catalytic converters on the market. Their ECO Series Catalytic Converters which are designed to help keep the Check Engine Light (MIL) off is another set of catalytic converters with world class quality.

    The Eastern ECO II Series Catalytic Converter is made specifically for most complex or second generation on board diagnostic (OBD II) systems. It features wash coats with greater loadings of precious metals to handle applications with ultra low emissions, higher than normal emissions, as well as vehicles with higher mileage and heavier workloads.

    The Eastern ECO II Series Catalytic Converter's features in a nutshell:

    • Engineered with Eastern's proprietary NANO technology yielding highly efficient loadings for lower cost and better converter efficiency
    • Features an advanced materials design for maximum engine output and performance

    Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

    • SKU#: EAST50366
    • Brand: Eastern
    • Fit Note: Driver And Passenger Side Assembly
    • Product Fit: Direct Fit
    • Quantity Sold: Assembly
    • Tube Material: Aluminized Steel
    • Anticipated Ship Out Time: 1-2 Business Days
    • Catalyst Substrate Material: Ceramic honeycomb
    (see more)
    Fits the following GMC Sierra 2500 Years:
    • 1999-2000 | 8 Cyl 5.3L | SL, SLE, SLT
    Rating: (see review/s)

    "the product that I ordered was delivered on time that was promised and all the items were included.the installation was not complicated due to the parts all lining up in place having the part come together where it did made the installation a breeze I was able to avoid removing any cross members etc." posted by: kreid on July 7, 2014

    "This rather complicated catalytic converter turned out to be relatively simple to replace especially since it came in two pieces so it was easier to install the new one than it was to remove the old one. The part(s) fit perfectly and everything works great. I removed all 4 O2 sensors and cleaned them before installing them in the new converter; and the whole system is working fine. No more engine codes! The price was better than any other place I looked; and the free shipping was a blessing." posted by: Don M on May 12, 2014 view all 46 reviews

    $108.98 List Price $141.03 Save $32.05 Availability: In Stock
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    • Not legal for use in California or in states adopting the California emissions standards
    • Semi-universal design – cut out your old catalytic converter and weld in the new one
    • Stainless Steel Construction
    • Legendary Magnaflow quality, power, and sound
    • Ceramic, honeycomb catalyst designed for maximum flow and surface area

    When you want the best, you want Magnaflow!  These 49-State Legal semi-universal catalytic converters have a catalyst specifically designed for your vehicle – just cut out your old catalytic converter and weld in the new one.  Engineered to cut emissions and improve performance.

    • SKU#: M6699006HM
    • Brand: Magnaflow
    • Product Fit: Minor Modifications
    • Quantity Sold: Sold Individually
    • Tube Material: Stainless Steel
    • Anticipated Ship Out Time: 1-2 Business Days
    • Catalyst Substrate Material: Ceramic honeycomb
    (see more)
    Fits the following GMC Sierra 2500 Years:
    • 1999-2000 | 8 Cyl 5.3L | SL, SLE, SLT
    $295.05 List Price $348.16 Save $53.11 Availability: In Stock
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    DAVICO EXACT FIT 49-STATE CATALYTIC CONVERTER

    Do not settle for a universal or generic catalytic converter when you can replace your old or failing catalytic converter with a direct fit unit from Davico Manufacturing. This company has been producing catalytic converters since 1987 and is known for producing direct fit aftermarket catalytic converters that are at par with OEM units in terms of quality, specifications, and performance. Their Exact Fit Catalytic Converter is sized specifically for each application and uses the right substrate to meet the aftermarket performance standards for catalytic converters.

    Features:
    • Direct fit - made using reliable computer-controlled fabrication system for flawless replication
    • Manufactured using strict OEM and emission control specifications
    • No cutting, sliding, clamping, or welding required for easier installation
    Specifications:
    • 3-bolt fixed flange inlet
    • 2-bolt fixed flange outlet
    • 2 oxygen sensor ports
    • Round body

    Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

    • SKU#: DAV19376
    • Brand: Davico
    • Product Fit: Direct Fit
    • Quantity Sold: Assembly
    • Tube Material: Aluminized Steel
    • Anticipated Ship Out Time: 1-2 Business Days
    • Catalyst Substrate Material: Ceramic honeycomb
    (see more)
    Fits the following GMC Sierra 2500 Years:
    • 2003-2004 | 8 Cyl 6.0L | Base, SLE, SLT, WT
    $526.16 List Price $929.54 Save $403.38 Availability: In Stock
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    CATCO CATALYTIC CONVERTER

    Catco catalytic converters are designed with 409 stainless steel pipes and shell for longer life.

    Specifications:

    • 3-bolt flange spherical flare inlet
    • 2-bolt flange welded outlet
    • Y-pipe assembly with two catalytic converters
    • Round body
    • 50.5 in. overall length

    Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

    • SKU#: CAT9083
    • Brand: Catco
    • Fit Note: Driver And Passenger Side Assembly, With Flat Spot in Middle Pipe, Federal And California Emission System, Driver and Passenger side Assembly
    • Quantity Sold: Assembly
    • Tube Material: Stainless Steel
    • Anticipated Ship Out Time: 1-2 Business Days
    • Catalyst Substrate Material: Ceramic honeycomb
    • Dimensions: 50.5 in. overall length
    (see more)
    Fits the following GMC Sierra 2500 Years:
    • 1999-2000 | 8 Cyl 5.3L | SL, SLE, SLT
    $390.84 List Price $1,014.98 Save $624.14 Availability: In Stock
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    WALKER CATALYTIC CONVERTER ASSEMBLY



    Walker catalytic converters feature OE style design and fit, thicker OE-quality flanges, oxygen sensor fittings, heat-shielded pipe, and structural brace for enhanced strength and durability.

    Features

    • Welded flange outlet
    • Standard assembly with two catalytic converters
    • Higher loaded substrate
    • Round body
    • Easy bolt-on installation
    Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

    • SKU#: WK50511
    • Brand: Walker
    • Fit Note: Driver And Passenger Side Assembly, Without Flat Spot in Middle Pipe, Driver and Passenger side Assembly
    • Product Fit: Direct Fit
    • Quantity Sold: Assembly
    • Tube Material: Stainless Steel
    • Anticipated Ship Out Time: Same day - 1 business day
    • Dimensions: 50.5 in. overall length
    (see more)
    Fits the following GMC Sierra 2500 Years:
    • 1999-2000 | 8 Cyl 5.3L | SL, SLE, SLT
    View All
    $400.94 List Price $606.93 Save $205.99 Availability: In Stock
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    FLOWMASTER – DIRECT FIT 49-STATE LEGAL* CATALYTIC CONVERTERS

    Flowmaster’s Direct Fit catalytic converter is dyno-proven to dramatically increase horsepower and reduce emissions better than your stock catalytic converter. It’s legal in 49 states and passes the federal EPA emissions standards – one of those ‘too good to be true’ must-have aftermarket products. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

    • Street legal - complies with federal EPA emissions standards
    • 50,000-mile/5-year casing warranty and 25,000-mile emissions warranty
    • Proven to improve horsepower while reducing emissions at the same time
    • 100% welded stainless body means long-lasting durability
    • Direct fit by vehicle year, make and model
    • Quick and easy installation
    • Dyno-tested
    • Factory replacement part
    • Precious metals and oversized substrates mean fewer toxins leaving the tailpipes
    • Includes heat shield for added protection

    • SKU#: F132010018
    • Brand: Flowmaster
    • Fit Note: 2.5 in. Inlet/3 in. Outlet
    • Quantity Sold: Sold Individually
    • Tube Material: Stainless Steel
    • Anticipated Ship Out Time: 1-2 Business Days
    • Catalyst Substrate Material: Ceramic
    • EO Number: Not applicable
    (see more)
    Fits the following GMC Sierra 2500 Years:
    • 1999-2000 | 8 Cyl 5.3L | SL, SLE, SLT
    $314.95 List Price $635.02 Save $320.07 Availability: In Stock
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    Not Legal in California
    • SKU#: W0133-1926265
    • Brand: Bosal
    • Fit Note: EPA Compliant - (48-State & Canada) EPA Tier 0 & Tier 1 emission use.
     
    Fits the following GMC Sierra 2500 Years:
    • 2002 | 8 Cyl 6.0L | Base
    • 2001-2002 | 8 Cyl 6.0L | SL, SLE, SLT
    $800.95 List Price $1,195.53 Save $394.58 Availability: In Stock
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    Diversified Environmental Catalysts
    Diversified Environmental Catalysts, Inc. specializes in the manufacturing of direct fit catalytic converters for import and domestic vehicles.

    Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

    • SKU#: W0133-1892494
    • Brand: Benchmark
    • Fit Note: This catalytic converter is NOT approved for sale or use in California.
    • Tube Material: Steel
    • Anticipated Ship Out Time: 1-2 Business Days
     
    Fits the following GMC Sierra 2500 Years:
    • 1999-2000 | 8 Cyl 5.3L | SL, SLE, SLT
    View Less