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Shopping for 2003-Cadillac-Escalade ESV
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Catalytic Converter

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Left Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Left Driver Side, Fit Federal Emissions, A-Premium APCCT715
$343.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
ColorNatural
Part interchange
645844, 50370
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Right Catalytic Converter
A-Premium®
1-PC Catalytic Converter, Right Passenger Side, A-Premium APCCT711
$318.99
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 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
ColorNatural
Part interchange
645448, 54423, 50371
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AP Emissions 608216 Catalytic Converter
AP Emissions
AP Emissions 608216 Catalytic Converter
$159.99
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 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Part interchange
608216
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AP Emissions 645844 Catalytic Converter, Left Driver Side
AP Emissions
AP Emissions 645844 Catalytic Converter, Left Driver Side
$440.99
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 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionLeft
Part interchange
645844
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AP Emissions 645448 Catalytic Converter, Right Passenger Side
AP Emissions
AP Emissions 645448 Catalytic Converter, Right Passenger Side
$471.99
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 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
645448
Show less
AP Emissions 608736 Catalytic Converter
AP Emissions
AP Emissions 608736 Catalytic Converter
$261.99
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 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Part interchange
608736
Show less
Catalytic Converter - Walker 15034
Walker
Walker 15034 Catalytic Converter, Exhaust
$167.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
15034, SC207, 602507, 6007, 602007, 70430, SC217, 6507
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Catalytic Converter - Walker 15039
Walker
Walker 15039 Catalytic Converter, Exhaust
$150.99
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 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
15039, 602207, 94109, 83167, 6907, 93167, 70330, 94009, 
...View more
Show less
Catalytic Converter - Right Passenger Side - Walker 54423
Walker
Walker 54423 Catalytic Converter, Right Passenger Side
$585.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
54423, 10395213, 645448, 079-5171, 15130093, 9266, 51139, 93602, 
...View more
Show less
Catalytic Converter - Left Driver Side - Walker 16166
Walker
Walker 16166 Catalytic Converter, Left Driver Side
$466.99
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 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionLeft
Part interchange
16166, 15754087, 9267, 651627, 15076461, 50370, 079-5172, 15755464, 
...View more
Show less
Catalytic Converter - Walker 93303
Walker
Walker 93303 Catalytic Converter, Exhaust
$220.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
93303, 70550, 6626, 2586, 89516, 608264, 99506HM, 70955, 
...View more
Show less
Catalytic Converter - Walker 83403
Walker
Walker 83403 Catalytic Converter, Exhaust
$324.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
83403
Show less
Catalytic Converter - Right Passenger Side - Walker 83457
Walker
Walker 83457 Catalytic Converter, Right Passenger Side
$650.99
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 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
83457
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Catalytic Converter - Left Driver Side - Walker 83497
Walker
Walker 83497 Catalytic Converter, Left Driver Side
$708.99
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 Cadillac Escalade ESV
Item LocatedUnited States
Quantity2
Installation PositionLeft
Part interchange
83497
Show less
Catalytic Converter - Walker 15104
Walker
Walker 15104 Catalytic Converter, Exhaust
$269.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2003 Cadillac Escalade ESV
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
15104, 641211, 92624, 82624
Show less

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!