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Shopping for 2003-Chevrolet-Express 2500
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2003 Chevrolet express%202500 Catalytic Converter

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AP Emissions 645815 Catalytic Converter, Right Passenger SideAP Emissions 645815 Catalytic Converter, Right Passenger Side
AP Emissions
AP Emissions 645815 Catalytic Converter, Right Passenger Side
$576.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
645815
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AP Emissions 608736 Catalytic Converter
AP Emissions
AP Emissions 608736 Catalytic Converter
$261.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
608736
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Eastern Catalytic 82725 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 82725 Catalytic Converter
$180.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
82725
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Eastern Catalytic 83166 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 83166 Catalytic Converter
$172.99
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3-year warranty
90 days free return
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Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
83166
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Eastern Catalytic 85356 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 85356 Catalytic Converter
$165.99
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 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
85356
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Eastern Catalytic 70855 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 70855 Catalytic Converter
$273.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
70855
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Eastern Catalytic 70857 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 70857 Catalytic Converter
$273.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
70857
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Eastern Catalytic 70957 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 70957 Catalytic Converter
$235.99
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 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
70957
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Eastern Catalytic 50379 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 50379 Catalytic Converter
$825.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
50379
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Eastern Catalytic 50425 Catalytic Converter, Right Passenger Side
Eastern Catalytic
Eastern Catalytic 50425 Catalytic Converter, Right Passenger Side
$398.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
50425
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Eastern Catalytic 50421 Catalytic Converter, Right Passenger Side
Eastern Catalytic
Eastern Catalytic 50421 Catalytic Converter, Right Passenger Side
$612.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
50421
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MagnaFlow 4451419 Catalytic Converter
MagnaFlow
MagnaFlow 4451419 Catalytic Converter
$1,931.99
Only 1 item left in stock
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
4451419
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MagnaFlow 447209 Catalytic Converter
MagnaFlow
MagnaFlow 447209 Catalytic Converter
$379.99
Only 1 item left in stock
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
447209
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MagnaFlow 447206 Catalytic Converter
MagnaFlow
MagnaFlow 447206 Catalytic Converter
$379.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
447206
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MagnaFlow 447105 Catalytic Converter
MagnaFlow
MagnaFlow 447105 Catalytic Converter
$491.99
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 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
447105
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MagnaFlow 445005 Catalytic Converter
MagnaFlow
MagnaFlow 445005 Catalytic Converter
$505.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
445005
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MagnaFlow 447106 Catalytic Converter
MagnaFlow
MagnaFlow 447106 Catalytic Converter
$491.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Part interchange
447106
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Catalytic Converter - Walker 15034
Walker
Walker 15034 Catalytic Converter, Exhaust
$167.99
Quantity Less than 3
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
15034, SC207, 602507, 6007, 602007, 70430, SC217, 6507
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Catalytic Converter - Walker 93304
Walker
Walker 93304 Catalytic Converter, Exhaust
$192.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
93304, 70551, 95497, 8007, 99509HM, 99517, 608227, 51509, 
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Catalytic Converter - Walker 93239
Walker
Walker 93239 Catalytic Converter, Exhaust
$162.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Chevrolet Express 2500
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
93239, 99109HM, 99517, 83167, 99009HM, 6607, 70957, 6907, 
...View more
Show less
Page 2 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!