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Shopping for 2003-Nissan-Xterra
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Catalytic Converter

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2 Pcs Left & Right Catalytic Converter
A-Premium®
2-PC Catalytic Converter, Driver & Passenger, Fit Federal Emissions, A-Premium APCCT158
$522.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity2
Installation PositionDriver & Passenger
ColorNatural
Part interchange
674-816, 674816, 641244, 140029S210, 674-818, 674818, 641243, 140029S200
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Left Catalytic Converter with Exhaust Manifold
A-Premium®
1-PC Catalytic Converter, Left Driver Side, Fit Federal Emissions, A-Premium APCCT159
$285.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
ColorNatural
Part interchange
674-816, 674816, 641244, 140029S210
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Right Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Right Passenger Side, Fit Federal Emissions, A-Premium APCCT160
$255.99
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: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
ColorNatural
Part interchange
674-818, 641243, 140029S200
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Front Left Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Left Driver Side, Fit Federal Emissions, A-Premium APCCT569
$217.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Installation PositionFront Left Driver Side
ColorNatural
Part interchange
16502, 641151, 40376
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Front Right Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Right Passenger Side, Fit Federal Emissions, A-Premium APCCT568
$250.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
Part interchange
16500, 641150, 40377
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Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Exhaust, Fit Federal Emissions, A-Premium APCCT337
$219.99
Quantity Less than 4
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Installation PositionExhaust
ColorNatural
Part interchange
642793, 18250
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Front Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Front Side, Fit Federal Emissions, A-Premium APCCT533
$196.99
Quantity Less than 5
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
641234, 40531
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AP Emissions 608204 Catalytic Converter
AP Emissions
AP Emissions 608204 Catalytic Converter
$165.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Part interchange
608204
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AP Emissions 912005R Catalytic Converter
AP Emissions
AP Emissions 912005R Catalytic Converter
$344.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Part interchange
912005R
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AP Emissions 912004 Catalytic Converter
AP Emissions
AP Emissions 912004 Catalytic Converter
$338.99
Quantity Less than 4
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Part interchange
912004
Show less
AP Emissions 912009 Catalytic Converter
AP Emissions
AP Emissions 912009 Catalytic Converter
$356.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Part interchange
912009
Show less
AP Emissions 2575 Catalytic Converter
AP Emissions
AP Emissions 2575 Catalytic Converter
$131.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Part interchange
2575
Show less
AP Emissions 608705 Catalytic Converter
AP Emissions
AP Emissions 608705 Catalytic Converter
$196.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Part interchange
608705
Show less
AP Emissions 911125 Catalytic Converter with Integrated Exhaust Manifold, Front Left Driver Side
AP Emissions
AP Emissions 911125 Catalytic Converter with Integrated Exhaust Manifold, Front Left Driver Side
$830.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Installation PositionFront Left
Part interchange
911125
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AP Emissions 911124 Catalytic Converter with Integrated Exhaust Manifold, Front Right Passenger Side
AP Emissions
AP Emissions 911124 Catalytic Converter with Integrated Exhaust Manifold, Front Right Passenger Side
$823.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Installation PositionFront Right
Part interchange
911124
Show less
AP Emissions 641244 Catalytic Converter with Integrated Exhaust Manifold
AP Emissions
AP Emissions 641244 Catalytic Converter with Integrated Exhaust Manifold
$709.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Part interchange
641244
Show less
AP Emissions 641243 Catalytic Converter with Integrated Exhaust Manifold
AP Emissions
AP Emissions 641243 Catalytic Converter with Integrated Exhaust Manifold
$711.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Part interchange
641243
Show less
AP Emissions 642793 Catalytic Converter, Rear Side
AP Emissions
AP Emissions 642793 Catalytic Converter, Rear Side
$229.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
642793
Show less
Eastern Catalytic 82724 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 82724 Catalytic Converter
$180.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Part interchange
82724
Show less
Eastern Catalytic 40542 Catalytic Converter, Rear Left Driver Side
Eastern Catalytic
Eastern Catalytic 40542 Catalytic Converter, Rear Left Driver Side
$339.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Nissan Xterra
Item LocatedUnited States
Quantity1
Installation PositionRear Left
Part interchange
40542
Show less
Page 1 of 3

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!