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Shopping for 2004-Nissan-Altima
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Catalytic Converter

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Rear Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Rear Side, Fit Federal Emissions, A-Premium APCCT432
4.4242 Reviews
$136.99
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
Rear Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Rear Side, Fit Federal Emissions, A-Premium APCCT316
4.4242 Reviews
$198.99
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
Front Catalytic Converter with Exhaust Manifold
A-Premium®
1-PC Catalytic Converter, Front Side, Fit Federal Emissions, A-Premium APCCT284
4.4242 Reviews
$128.99
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
2 Pcs Front & Rear Catalytic Converter
A-Premium®
2-PC Catalytic Converter, Front & Rear, Fit Federal Emissions, A-Premium APCCT283
4.4242 Reviews
$300.99
Quantity Less than 4
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2004 Nissan Altima
Specifications
2 Pcs Front Catalytic Converter
A-Premium®
2-PC Catalytic Converter, Front Driver & Passenger, Fit Federal Emissions, A-Premium APCCT060
$312.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2004 Nissan Altima
Specifications
Front Passenger Pre-Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Right Passenger Side, Fit Federal Emissions, A-Premium APCCT243
4.4242 Reviews
$132.99
Quantity Less than 4
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
3 Pcs Front & Rear Catalytic Converter
A-Premium®
3-PC Catalytic Converter, Front & Rear, Fit Federal Emissions, A-Premium APCCT058
$600.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2004 Nissan Altima
Specifications
Rear Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Rear Side, Fit Federal Emissions, A-Premium APCCT076
$249.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2004 Nissan Altima
Specifications
Front Driver Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Left Driver Side, Fit Federal Emissions, A-Premium APCCT063
4.4242 Reviews
$133.99
Quantity Less than 4
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Exhaust, Fit Federal Emissions, A-Premium APCCT337
$219.99
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
Front Passenger Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Right Passenger Side, Fit Federal Emissions, A-Premium APCCT059
$178.99
Only 1 item left in stock
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
AP Emissions 608215 Catalytic Converter
AP Emissions
AP Emissions 608215 Catalytic Converter
$161.99
Quantity Less than 3
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
AP Emissions 608265 Catalytic Converter
AP Emissions
AP Emissions 608265 Catalytic Converter
$152.99
Quantity Less than 2
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
AP Emissions 608415 Catalytic Converter
AP Emissions
AP Emissions 608415 Catalytic Converter
$148.99
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
AP Emissions 772105 Catalytic Converter
AP Emissions
AP Emissions 772105 Catalytic Converter
$423.99
Only 1 item left in stock
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
AP Emissions 772379 Catalytic Converter, Rear Side
AP Emissions
AP Emissions 772379 Catalytic Converter, Rear Side
$482.99
Only 1 item left in stock
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
AP Emissions 771409 Catalytic Converter, Front Left Driver Side
AP Emissions
AP Emissions 771409 Catalytic Converter, Front Left Driver Side
$772.99
Only 1 item left in stock
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
AP Emissions 771408 Catalytic Converter, Front Right Passenger Side
AP Emissions
AP Emissions 771408 Catalytic Converter, Front Right Passenger Side
$600.99
Quantity Less than 2
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
AP Emissions 771104 Catalytic Converter
AP Emissions
AP Emissions 771104 Catalytic Converter
$416.99
Quantity Less than 5
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3-year warranty
90 days free return
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Vehicle: 2004 Nissan Altima
Specifications
AP Emissions 755005 Catalytic Converter
AP Emissions
AP Emissions 755005 Catalytic Converter
$283.99
Quantity Less than 5
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2004 Nissan Altima
Specifications
Page 1 of 4

A catalytic converter, often referred to as a "cat," is an essential component of your engine's exhaust system. This device uses catalysts to transform harmful chemicals in the exhaust gases.

What are the signs of a bad catalytic converter?

  • Check engine light
    The dashboard warning light may illuminate, indicating potential issues.
  • Decreased engine performance
    Noticeable loss of power, acceleration, or overall engine performance.
  • Poor fuel economy
    A significant drop in fuel efficiency can occur as the converter fails.
  • Excessive exhaust emissions
    Increased emissions, including a strong sulfur or rotten egg smell.
  • Rattling noises
    Unusual rattling sounds from the exhaust system, indicating internal damage.
  • Overheating
    The engine may run hotter than normal due to restricted exhaust flow.
  • Failed emissions test
    Inability to pass emissions testing due to high pollution levels.

Shop for aftermarket catalytic converters on A-Premium.com

Premium.com offers a wide range of aftermarket catalytic converters for your vehicle. Refine your search by selecting from various dimensions, inlet types, and tube materials. A-Premium team is dedicated to helping you find a compatible catalytic converter for your car. Every item in our catalog is carefully selected by our team of experts, ensuring they undergo rigorous quality checks to endure the demanding conditions of your exhaust system. Shop now to find the best deal on your new catalytic converter!