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Catalytic Converter for 2004 Buick Century

We have 19 Items In-stock. Select your vehicle's Submodel to continue.

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
Only from APW Rewards
  • Brand SKU#: Magnaflow 99306HM
  • 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
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 11 in. L x 5.13 in. W, 15 in. overall length
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
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Fits the following 2004 Buick Century Submodels

  • 6 Cyl 3.1L | Custom, Limited
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Magnaflow OEM Grade (48-State Legal) Semi-Universal Catalytic Converters

  • Not legal for use in California or New York
  • 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 48-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

$144.84 $187.44 You Save $42.60 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 51306
  • 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 48-State Legal Direct Fit Catalytic Converters

  • Not legal for use in California or New York
  • 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 48-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

$241.57 $312.62 You Save $71.05 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 23433
  • 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
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 11 in.
  • Notes: Gaskets Included
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

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

Magnaflow California Legal Semi-Universal Catalytic Converter

  • 50-State/California Legal
  • 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 semi-universal 50-State Legal 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 50-State Semi-Universal Catalytic Converter - Traditional Converter, Semi-Universal

$347.74 $450.02 You Save $102.28 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 456005
  • Series: Magnaflow 50-State Semi-Universal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • E O Number: D-193-114
  • Anticipated Ship Out Time: 1-2 Business Days
  • Notes: Inlet/Outlet Size : 2.25in. I.D.
  • 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 50-State Semi-Universal Catalytic Converter - Traditional Converter, Semi-Universal

$347.74 $450.02 You Save $102.28 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 456006
  • Series: Magnaflow 50-State Semi-Universal
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • E O Number: D-193-114
  • Anticipated Ship Out Time: 1-2 Business Days
  • Notes: Inlet/Outlet Size : 2.5in. I.D.
  • 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 California Legal Direct-Fit Catalytic Converters

  • California/50-State Legal
  • 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 direct-fit 50-State Legal 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 50-State Direct-Fit Catalytic Converter - Traditional Converter, Direct Fit

$634.44 $821.04 You Save $186.60 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 456059
  • Series: Magnaflow 50-State Direct-Fit
  • Type: Traditional Converter
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • E O Number: D-193-114
  • Anticipated Ship Out Time: 1-2 Business Days
  • Notes: Gaskets Included
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2004 Buick Century Submodels

  • 6 Cyl 3.1L | Custom, Limited
See more

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