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GMC R3500 Catalytic Converter

We have 5 Items In-stock. Select a year to continue.
$195.32 List Price $230.48 Save $35.16 Availability: In Stock
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EASTERN ECO III SERIES CATALYTIC CONVERTER

3 decades of advancement is proof enough that Eastern is the top maker of the highest quality aftermarket replacement and OE catalytic converters on the industry. Their ECO Series Catalytic Converters which are developed to help keep the Check Engine Light (MIL) off is another set of catalytic converters with top notch quality.

The Eastern ECO III Series Catalytic Converter is designed with twice the amount of Rhodium for vehicles with emissions that are out of the normal range. 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.

Features and Benefits:

  • 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#: EAST50298
  • Brand: Eastern
  • Fit Note: Over 8500 Lbs. GVW
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
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Fits the following GMC R3500 Years:
  • 1990-1991 | 8 Cyl 5.7L | SLE
  • 1987-1991 | 8 Cyl 5.7L | Base
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$79.59 List Price $103.00 Save $23.41 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#: M6694009
  • Brand: Magnaflow
  • Fit Note: For Units with 26-1/2 in. Overall Length
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Dimensions: 12 in. L x 6.5 in. W x 4 in. H, 16 in. overall length
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Fits the following GMC R3500 Years:
  • 1990-1991 | 8 Cyl 5.7L | SLE
  • 1987-1991 | 8 Cyl 5.7L | Base
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$181.67 List Price $214.37 Save $32.70 Availability: In Stock
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WALKER CATALYTIC CONVERTER

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
  • Higher loaded substrate
  • Oval body
  • Easy bolt-on installation
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: WK15693
  • Brand: Walker
  • Fit Note: With 26-1/4 in. Overall Length
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: Same day - 1 business day
  • Dimensions: 26.25 in. overall length
  • Warranty: 5-year or 50,000-mile Walker limited warranty
 
Fits the following GMC R3500 Years:
  • 1990-1991 | 8 Cyl 5.7L | SLE
  • 1987-1991 | 8 Cyl 5.7L | Base
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Rating: (see review/s)

"Once I got the old catalytic converter out the job was easy. The new converter slipped right in. I passed my California smog test with this as the only change on my 20 year old truck, where I had failed before. It cleaned up my hydrocarbons and NO." posted by: Eppi on August 2, 2009

$147.01 List Price $190.24 Save $43.23 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#: F132010025
  • Brand: Flowmaster
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic
  • EO Number: Not applicable
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Fits the following GMC R3500 Years:
  • 1987-1989 | 8 Cyl 7.4L | Base, High Sierra, Sierra Classic
$140.95 List Price $276.40 Save $135.45 Availability: In Stock
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Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: W0133-1925165
  • Brand: Bosal
  • Fit Note: w/ GVW under 8500lbs

    This catalytic converter is NOT approved for sale or use in California.
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: Same day - 1 business day
 
Fits the following GMC R3500 Years:
  • 1990-1991 | 8 Cyl 5.7L | SLE
  • 1989-1991 | 8 Cyl 5.7L | Base
(see more)