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Shopping for 2003-Toyota-4Runner
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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 APCCT156
4.4251 Reviews
$327.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity2
Installation PositionDriver & Passenger
ColorNatural
Part interchange
674-797, 171500P020, 171500P070, 171500P100, 171500P260, 1715031010, 1715031011, 1715031070, 
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Right Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Right Passenger Side, Fit Federal Emissions, A-Premium APCCT155
$210.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
ColorNatural
Part interchange
674-796, 171400P010, 171400P260, 1714031010, 1714031011, 1714031070, 1714031240, 1714031250, 
...View more
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2 Pcs Left & Right Catalytic Converter with Exhaust Manifold
A-Premium®
2-PC Catalytic Converter, Driver & Passenger, Fit Federal Emissions, A-Premium APCCT141
$512.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity2
Installation PositionDriver & Passenger
ColorNatural
Part interchange
674-113, 1710550170, 674-114, 1710450180
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Rear Passenger Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Rear Right Passenger Side, Fit Federal Emissions, A-Premium APCCT500
$233.99
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: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Installation PositionRear Right Passenger Side
ColorNatural
Part interchange
642192
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Rear Driver Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Rear Left Driver Side, Fit Federal Emissions, A-Premium APCCT498
$224.99
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: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Installation PositionRear Left Driver Side
ColorNatural
Part interchange
642191
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2 Pcs Rear Catalytic Converter
A-Premium®
2-PC Catalytic Converter, Rear Side, Fit Federal Emissions, A-Premium APCCT499
4.4251 Reviews
$447.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity2
Installation PositionRear Side
ColorNatural
Part interchange
642191, 642192
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Right Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Right Passenger Side, Fit Federal Emissions, A-Premium APCCT143
$314.99
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 Toyota 4Runner
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
ColorNatural
Part interchange
674-114, 1710450180
Show less
Left Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Left Driver Side, Fit Federal Emissions, A-Premium APCCT142
$309.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
ColorNatural
Part interchange
674-113, 1710550170
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Left Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Left Driver Side, Fit Federal Emissions, A-Premium APCCT157
$245.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
ColorNatural
Part interchange
674-797, 171500P020, 171500P070, 171500P100, 171500P260, 1715031010, 1715031011, 1715031070, 
...View more
Show less
AP Emissions 608414 Catalytic Converter
AP Emissions
AP Emissions 608414 Catalytic Converter
$156.99
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 Toyota 4Runner
Item LocatedUnited States
Quantity1
Part interchange
608414
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AP Emissions 608415 Catalytic Converter
AP Emissions
AP Emissions 608415 Catalytic Converter
$148.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Part interchange
608415
Show less
AP Emissions 912005R Catalytic Converter
AP Emissions
AP Emissions 912005R Catalytic Converter
$344.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Part interchange
912005R
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AP Emissions 912006 Catalytic Converter
AP Emissions
AP Emissions 912006 Catalytic Converter
$327.99
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 Toyota 4Runner
Item LocatedUnited States
Quantity1
Part interchange
912006
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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 Toyota 4Runner
Item LocatedUnited States
Quantity1
Part interchange
912004
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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 Toyota 4Runner
Item LocatedUnited States
Quantity1
Part interchange
912009
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AP Emissions 774016 Catalytic Converter, Front Side
AP Emissions
AP Emissions 774016 Catalytic Converter, Front Side
$530.99
Quantity Less than 2
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Installation PositionFront
Part interchange
774016
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AP Emissions 642192 Catalytic Converter, Rear Right Passenger Side
AP Emissions
AP Emissions 642192 Catalytic Converter, Rear Right Passenger Side
$417.99
Quantity Less than 3
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Installation PositionRear Right
Part interchange
642192
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AP Emissions 642191 Catalytic Converter, Rear Left Driver Side
AP Emissions
AP Emissions 642191 Catalytic Converter, Rear Left Driver Side
$388.99
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 Toyota 4Runner
Item LocatedUnited States
Quantity1
Installation PositionRear Left
Part interchange
642191
Show less
AP Emissions 602205 Catalytic Converter
AP Emissions
AP Emissions 602205 Catalytic Converter
$85.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Part interchange
602205
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AP Emissions 9216 Catalytic Converter
AP Emissions
AP Emissions 9216 Catalytic Converter
$32.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Toyota 4Runner
Item LocatedUnited States
Quantity1
Part interchange
9216
Show less
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!