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GMC C25 Suburban Catalytic Converter

We have 4 Items In-stock. Select a year to continue.
$75.88 List Price $98.20 Save $22.32 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#: M6694006
  • Brand: Magnaflow
  • 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 C25 Suburban Years:
  • 1978 | 8 Cyl 5.7L | Base, High Sierra, Sierra Classic, Sierra Grande
Rating: (see review/s)

"I really have no pro's or con's about this converter. Ordered it on Thursday and by Saturday I have FEDEX delivering the package. Really fast prompt service. It does not say this in the description of the product, but the openings are 2.5 inch inside diameter. Installed it today and so now I can get my truck inspected. I am forwarding this website to a friend of mine who has a 89 Chevy like my 92 and he needs a caty to get his truck running and inspected." posted by: Doc on December 11, 2010

"I ordered this for my jeep, it arrived in great condition and would order from this company again! Thanks so much" posted by: froggy on May 25, 2010 view all 3 reviews

$114.76 List Price $277.32 Save $162.56 Availability: In Stock
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Catco Catalytic Converter

CATCO is well known for its experience throughout the years in using spot-on manufacturing practices and innovative technologies that paved way in producing one of the world's best and fully integrated catalytic converters today. In order to meet the customer's needs, CATCO has set its standards of catalytic converters that are produced with top-quality design, material, and performance. The CATCO catalytic converter not only delivers all the necessary function that the product should provide but it gives what the customer expects and truly deserve.

Catco catalytic converter Features and Benefits:
  • Constructed with a 409 stainless steel shell to give optimum durability and strength
  • Designs have met EPA and CARB emission requirements as cataloged
Specifications:
  • 16.5 in. overall length; 2.5 in. inlet diameter; 2.5 in. outlet diameter
  • Single inlet and outlet configuration
  • One catalytic converter quantity
  • Ceramic honeycomb substrate material
  • Stainless steel case material
  • Stainless steel tube material
  • Oval body
  • Without oxygen sensor port
  • 5-year or 50,000-mile Catco limited warranty on converter body with 25,000-mile limited warranty on emissions

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

  • SKU#: CAT9006
  • Brand: Catco
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 2-3 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Warranty: 5-year or 50,000-mile Catco limited warranty on converter body with 25,000-mile limited warranty on emissions
 
Fits the following GMC C25 Suburban Years:
  • 1978 | 8 Cyl 6.6L | Base, High Sierra, Sierra Classic, Sierra Grande
  • 1977-1978 | 8 Cyl 5.0L | Base, High Sierra, Sierra Classic, Sierra Grande
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$145.79 List Price $369.70 Save $223.91 Availability: In Stock
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WALKER CATALYTIC CONVERTER, UNIVERSAL

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

  • SKU#: WK15146
  • Brand: Walker
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: Same day - 1 business day
  • Dimensions: 18 in. overall length
  • Warranty: 5-year or 50,000-mile Walker limited warranty
 
Fits the following GMC C25 Suburban Years:
  • 1978 | 8 Cyl 7.4L | Base, High Sierra, Sierra Classic, Sierra Grande
$91.51 List Price $118.42 Save $26.91 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#: F132010040
  • 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
(see more)
Fits the following GMC C25 Suburban Years:
  • 1978 | 8 Cyl 6.6L | Base, High Sierra, Sierra Classic, Sierra Grande
  • 1977-1978 | 8 Cyl 5.0L | Base, High Sierra, Sierra Classic, Sierra Grande
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