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Catalytic Converter for 2004 Buick Century

We have 18 Items In-stock. Select your vehicle's Submodel to continue.

Eastern 49-state legal Universal Catalytic Converter

Eastern 49-State Legal Universal Catalytic Converters

  • NANO technology for better converter efficiency
  • Advanced materials design for optimum engine output and catalytic efficiency
  • Complete range of inlet and outlet diameters
  • Non-directional for ease of installation
Backed by 3 decades of product expertise, Eastern continues to invest in state-of-the-art production equipment to guarantee only the best for their customers - making them ready for the future.

Note:
  • 49-state legal; Not legal in California and other states adopting California Emissions Standards; Not for sale or use in California and other states adopting California Emissions Standards; Cannot be shipped to California and such states

Eastern ECO GM Catalytic Converter - Traditional Converter, Semi-Universal

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$90.43 $106.71 You Save $16.28 (15%)
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Availability: In Stock
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  • Sku#: EAST99175
  • Series: Eastern ECO GM
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Dimensions: 12 in. L x 6 in. W x 4.25 in. H, 16 in. overall length
  • Replaces OE Number: 25165284, 25165291
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
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Fits the following 2004 Buick Century Submodels

  • 6 Cyl 3.1L | Custom, Limited
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49-state legal Eastern Direct Fit Catalytic Converter

Eastern 49-State Legal Direct Fit Catalytic Converters

  • NANO technology for better converter efficiency
  • Advanced materials design for optimum engine output and catalytic efficiency
  • Complete range of inlet and outlet diameters
Backed by 3 decades of product expertise, Eastern continues to invest in state-of-the-art production equipment to guarantee only the best for their customers - making them ready for the future.

Note:
  • 49-state legal; Not legal in California and other states adopting California Emissions Standards; Not for sale or use in California and other states adopting California Emissions Standards; Cannot be shipped to California and such states

Eastern ECO GM Catalytic Converter - Traditional Converter, Direct Fit

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$191.38 $225.83 You Save $34.45 (15%)
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Availability: In Stock
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  • Sku#: EAST50322
  • Series: Eastern ECO GM
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Dimensions: 40 in. overall length
  • Replaces OE Number: 10343185, 24507885, 24508102
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
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Fits the following 2004 Buick Century Submodels

  • 6 Cyl 3.1L | Custom, Limited
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Customer Review: (see review/s)
  • i had to buy better gasketsthe ones that came were cheaply made and would not seal.The sound is annoying alsothe car has a low growl sound now and did not before.If i had known this i would have paid the 250.00 instead of the 170.00 and received a better quality part.thats what i get trying to be frugal(cheap).

    posted by: bubbajay405 on July 11, 2013

  • This product is not as quite as the original. Next time I will spend twice as much to get original.

    posted by: Weekend Warrior on April 29, 2009

Magnaflow 49-State Legal Semi-Universal Catalytic Converter

  • 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.

Magnaflow 49-State Semi-Universal Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$108.09 $139.88 You Save $31.79 (23%)
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Availability: In Stock
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  • Sku#: M6699306HM
  • Series: Magnaflow 49-State Semi-Universal
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Dimensions: 11 in. L x 5.13 in. W, 15 in. overall length
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
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Fits the following 2004 Buick Century Submodels

  • 6 Cyl 3.1L | Custom, Limited
See more

Magnaflow OEM Grade (49-State Legal) Semi-Universal Catalytic Converter

  • Not legal for use in California or in states adopting the California emissions standards
  • Designed for vehicles equipped with California emissions but not registered or driven in a state adopting the California emissions standards (see item details for more information)
  • 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.

Magnaflow OEM Grade (49-State) Semi-Universal Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$144.84 $187.44 You Save $42.60 (23%)
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  • Sku#: M6651306
  • Series: Magnaflow OEM Grade (49-State) Semi-Universal
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2004 Buick Century Submodels

  • 6 Cyl 3.1L | Custom, Limited
See more

Magnaflow 49-State Legal Direct Fit Catalytic Converter

  • Not legal for use in California or in states adopting the California emissions standards
  • Easy bolt-on Installation with no cutting, welding or bending required
  • 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 direct-fit catalytic converters are specifically designed to fit your vehicle with a no-hassle installation – no cutting, welding, or bending required.  Engineered to cut emissions and improve performance.

Magnaflow 49-State Direct Fit Catalytic Converter - Traditional Converter, Direct Fit

Overstock
$241.57 $312.62 You Save $71.05 (23%)
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Availability: In Stock
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  • Sku#: M6623433
  • Series: Magnaflow 49-State Direct Fit
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Dimensions: 11 in.
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
  • Notes: Gaskets Included
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Fits the following 2004 Buick Century Submodels

  • 6 Cyl 3.1L | Custom, Limited
See more
Customer Review: (see review/s)
  • excellent product fit directly in place with ease. lower exhaust gasket wouldn t seal had to use oem gasket and was fine but other wise great product and very good customer service

    posted by: shaynus on March 28, 2014

  • My oe cat was clogged on my 2003 impala. I learned this was quite frequent for 3400 cars with this oe cat around 100000 miles. It was this or a 700 dollar oe cat. Went with this. Installed myself with no problems. I figure I could buy 3 of these if need be over time for replacement over an oe cat. If my vehicle lasts that long and it would be around the same price anyway. I have faith in this cat though. Upped my mileage handful efficiency from my oe cat. It was bad though...so thats a given. Car ran like New after install. Happy car happy driver.

    posted by: Phlanx on January 13, 2014

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