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Shopping for 2018-Nissan-Altima
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2018 Nissan Altima Catalytic Converter

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Eastern Catalytic 40886 Catalytic Converter, Front Right Passenger SideEastern Catalytic 40886 Catalytic Converter, Front Right Passenger Side
Eastern Catalytic
Eastern Catalytic 40886 Catalytic Converter, Front Right Passenger Side
$454.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2018 Nissan Altima
Item LocatedUnited States
Quantity1
Installation PositionFront Right
Part interchange
40886
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Eastern Catalytic 40887 Catalytic Converter, Rear Side
Eastern Catalytic
Eastern Catalytic 40887 Catalytic Converter, Rear Side
$507.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2018 Nissan Altima
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
40887
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Catalytic Converter - Walker 54782
Walker
Walker 54782 Catalytic Converter, Exhaust
$186.99
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: 2018 Nissan Altima
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
54782, 096-1460, 52660, 20010JA01A, 20010JA000, 49504, 40919, 096-1486, 
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Catalytic Converter - Walker 84206
Walker
Walker 84206 Catalytic Converter, Exhaust
$207.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2018 Nissan Altima
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
84206, 551004, 755005
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Catalytic Converter - Walker 16700
Walker
Walker 16700 Catalytic Converter, Exhaust
$591.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2018 Nissan Altima
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
16700, B08A21AE0A, 099-1496, 641532, B08A21AA0A, B08A21AE0B, 208A2JA10A, 40886, 
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Catalytic Converter - Walker 15034
Walker
Walker 15034 Catalytic Converter, Exhaust
$167.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2018 Nissan Altima
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
15034, SC207, 602507, 6007, 602007, 70430, SC217, 6507
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Catalytic Converter - Walker 15104
Walker
Walker 15104 Catalytic Converter, Exhaust
$269.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2018 Nissan Altima
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
15104, 641211, 92624, 82624
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Catalytic Converter - Walker 16702
Walker
Walker 16702 Catalytic Converter, Exhaust
$633.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2018 Nissan Altima
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
16702, 208A3ZN80A, B08A33GP0A, 641531, B08A31JL0A, 51842, 52658, 52653, 
...View more
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Catalytic Converter with Integrated Exhaust Manifold - Walker 16694
Walker
Walker 16694 Catalytic Converter with Integrated Exhaust Manifold, Exhaust
$640.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2018 Nissan Altima
Item LocatedUnited States
Quantity1
Installation PositionExhaust
MaterialStainless Steel
Part interchange
16694, 140E23TA0A, 096-1445, 641427, 140E23TY0A, 674-143, 49295
Show less
Page 2 of 2

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!