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Catalytic Converter for 2004 Kia Optima

We have 78 Items In-stock. Select your vehicle's Submodel to continue.

Evan Fischer 48-State Legal (No CA and NY) Catalytic Converter

This Evan Fischer 48-State Legal (No CA and NY) Direct Fit Catalytic Converter is manufactured from high quality and durable stainless steel catalytic case, 16-gauge aluminized steel tubes, and heat shield for long lasting durability and better protection for your vehicle. It also features honeycomb catalyst that has maximum surface area flow. OBD-II and EPA compliant catalytic converter; It is a high quality aftermarket replacement for the OEM catalytic converter. Designed for easy installation - it requires no cutting or welding!

Evan Fischer also offers comprehensive manifold converter assemblies for newer vehicle models!

  • OBD-II And EPA compliant catalytic converter
  • Requires NO cutting or welding
  • Honeycomb catalyst with maximum surface area flow
  • Covered by 5-year or 50,000-mile limited warranty
  • Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses

Evan Fischer Front Catalytic Converter - Traditional Converter, Direct Fit

Best Seller
$168.99 $268.23 You Save $99.24 (37%)
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Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Evan Fischer REPH960308
  • Location: Front
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 8.25 in. overall length
  • Inlet Type: Single (5-bolt welded flange)
  • Outlet Type: Single (3-bolt welded flange)
  • Oxygen Sensor Ports: 1
  • Warranty: 5-year or 50,000-mile limited warranty
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Fits the following 2004 Kia Optima Submodels

  • 4 Cyl 2.4L | LX, EX
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Customer Review: (see review/s)
  • I was very pleased with my cat conv. also the customer service was excellent. I will definitely come back to this site when I need more parts.

    posted by: Viejito on November 12, 2014

  • view all 2 reviews

Evan Fischer Rear Catalytic Converter - Traditional Converter, Direct Fit

Best Seller
$171.97 $363.03 You Save $191.06 (53%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Evan Fischer REPH960320
  • Location: Rear
  • Type: Traditional Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 48 in. overall length
  • Inlet Type: Single (3-bolt welded flange)
  • Outlet Type: Single (2-bolt welded flange)
  • Warranty: 5-year or 50,000-mile limited warranty
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Fits the following 2004 Kia Optima Submodels

  • 4 Cyl 2.4L | LX, EX
See more

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 Rear Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$111.97 $144.90 You Save $32.93 (23%)
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Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 99004HM
  • Location: Rear
  • 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: 12 in. L x 6.5 in. W, 16 in. overall length
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
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Fits the following 2004 Kia Optima Submodels

  • 4 Cyl 2.4L | LX, EX
  • 6 Cyl 2.7L | LX, EX
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Customer Review: (see review/s)
  • It was easy for the installer to install. Did not affect the Oxygen Sensor, and now I got super great mileage, from less than 20 mpg, I now get 26.5 mpg.

    posted by: Gil on March 15, 2010

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 Rear Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$169.21 $218.98 You Save $49.77 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 441304
  • Location: Rear
  • 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-193-96
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 13 in. overall length
  • Notes: Inlet/Outlet Size : 2in. I.D.
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
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Fits the following 2004 Kia Optima Submodels

  • 4 Cyl 2.4L | LX, EX
See more

Magnaflow 50-State Semi-Universal Front Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$185.78 $240.43 You Save $54.65 (23%)
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Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 444104
  • Location: Front
  • 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-193-96
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 13 in. overall length
  • Notes: Inlet/Outlet Size : 2in. I.D.
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
See more

Fits the following 2004 Kia Optima Submodels

  • 4 Cyl 2.4L | LX, EX
See more

Magnaflow 50-State Semi-Universal Rear Catalytic Converter - Traditional Converter, Semi-Universal

$165.85 $214.63 You Save $48.78 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 57105
  • Location: Rear
  • 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-193-107, D-193-99
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 13 in. overall length
  • Notes: Inlet/Outlet Size : 2.25in. I.D.
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
See more

Fits the following 2004 Kia Optima Submodels

  • 6 Cyl 2.7L | LX, EX
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 Front Catalytic Converter - Traditional Converter, Direct Fit

$260.85 $337.57 You Save $76.72 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 23043
  • Location: Front
  • 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
  • Notes: Gaskets Included
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2004 Kia Optima Submodels

  • 4 Cyl 2.4L | LX, EX
See more

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

$374.60 $484.77 You Save $110.17 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 26212
  • Location: Rear
  • 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
  • Notes: Gaskets Included
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2004 Kia Optima Submodels

  • 6 Cyl 2.7L | LX, EX
See more

Magnaflow 49-State Direct Fit Front Catalytic Converter - Manifold Converter, Direct Fit

$412.59 $533.94 You Save $121.35 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 50216
  • Location: Front
  • Series: Magnaflow 49-State Direct Fit
  • Type: Manifold 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
  • Notes: Gaskets Included; Exhaust Manifold with Integrated Catalytic Converter Federal (Exc.CA)
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2004 Kia Optima Submodels

  • 6 Cyl 2.7L | LX, EX
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 Front Catalytic Converter - Traditional Converter, Direct Fit

Best Seller
$529.74 $685.55 You Save $155.81 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 452021
  • Location: Front
  • 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-193-124
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
See more

Fits the following 2004 Kia Optima Submodels

  • 6 Cyl 2.7L | LX, EX
See more

Magnaflow 50-State Direct-Fit Front Catalytic Converter - Traditional Converter, Direct Fit

$407.92 $527.90 You Save $119.98 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 56020
  • Location: Front
  • 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-193-107, D-193-99
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 7 in. overall length
  • Notes: Round body
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
See more

Fits the following 2004 Kia Optima Submodels

  • 4 Cyl 2.4L | LX, EX
See more

Magnaflow 50-State Direct-Fit Front Catalytic Converter - Manifold Converter, Direct Fit

$530.26 $686.21 You Save $155.95 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 56021
  • Location: Front
  • Series: Magnaflow 50-State Direct-Fit
  • Type: Manifold Converter
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • E O Number: D-193-107, D-193-99
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 14 in. overall length
  • Notes: Round body; Exhaust Manifold with Integrated Catalytic Converter CALIFORNIA CONVERTERS
  • Warranty: Magnaflow 5 year / 50,000 Mile Warranty
See more

Fits the following 2004 Kia Optima Submodels

  • 6 Cyl 2.7L | LX, EX
See more

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