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2004 Subaru Legacy Catalytic Converter

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Rear Catalytic ConverterRear Catalytic Converter
A-Premium®
1-PC Catalytic Converter Rear Side Fit Federal Emissions A-Premium APCCT117
$187.99
Only 1 item left in stock
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionRear Side
ColorNatural
Part interchange
44110FA010, 44139FA010, 44139FA160, 44139FA161, 44139SA000, 44139SA010, 54573, 642291, 
...View more
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Right Catalytic Converter
A-Premium®
1-PC Catalytic Converter Right Passenger Side Fit Federal Emissions A-Premium APCCT443
$166.99
Quantity Less than 5
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
ColorNatural
Part interchange
54834, 44101AE08A, 44101AG17A
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AP Emissions 772574 Catalytic Converter
AP Emissions
AP Emissions 772574 Catalytic Converter
$429.99
Only 1 item left in stock
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Part interchange
772574
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AP Emissions 771461 Catalytic Converter
AP Emissions
AP Emissions 771461 Catalytic Converter
$816.99
Quantity Less than 3
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Part interchange
771461
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AP Emissions 642291 Catalytic Converter, Rear Side
AP Emissions
AP Emissions 642291 Catalytic Converter, Rear Side
$355.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
642291
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AP Emissions 643085 Catalytic Converter with Integrated Exhaust Manifold, Left Driver Side
AP Emissions
AP Emissions 643085 Catalytic Converter with Integrated Exhaust Manifold, Left Driver Side
$827.99
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: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionLeft
Part interchange
643085
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AP Emissions 642019 Catalytic Converter with Integrated Exhaust Manifold, Right Passenger Side
AP Emissions
AP Emissions 642019 Catalytic Converter with Integrated Exhaust Manifold, Right Passenger Side
$505.99
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: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
642019
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Eastern Catalytic 40237 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 40237 Catalytic Converter
$367.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Part interchange
40237
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Eastern Catalytic 93425 Catalytic Converter
Eastern Catalytic
Eastern Catalytic 93425 Catalytic Converter
$184.99
Quantity Less than 3
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Part interchange
93425
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Eastern Catalytic 41022 Catalytic Converter, Front Side
Eastern Catalytic
Eastern Catalytic 41022 Catalytic Converter, Front Side
$641.99
Only 1 item left in stock
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionFront
Part interchange
41022
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Eastern Catalytic 40699 Catalytic Converter, Left Driver Side
Eastern Catalytic
Eastern Catalytic 40699 Catalytic Converter, Left Driver Side
$869.99
Only 1 item left in stock
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionLeft
Part interchange
40699
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Eastern Catalytic 40700 Catalytic Converter, Right Passenger Side
Eastern Catalytic
Eastern Catalytic 40700 Catalytic Converter, Right Passenger Side
$559.99
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: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionRight
Part interchange
40700
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MagnaFlow 444104 Catalytic Converter
MagnaFlow
MagnaFlow 444104 Catalytic Converter
$314.99
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: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Part interchange
444104
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MagnaFlow 444504 Catalytic Converter
MagnaFlow
MagnaFlow 444504 Catalytic Converter
$363.99
Quantity Less than 2
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Part interchange
444504
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MagnaFlow 441334 Catalytic Converter
MagnaFlow
MagnaFlow 441334 Catalytic Converter
$489.99
Only 1 item left in stock
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Part interchange
441334
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Catalytic Converter - Walker 93253
Walker
Walker 93253 Catalytic Converter, Exhaust
$148.99
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
93253, 99756HM, 92256, 097-0373, 51206, 608286, 2576r, 92466, 
...View more
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Catalytic Converter - Walker 54562
Walker
Walker 54562 Catalytic Converter, Exhaust
$452.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionExhaust
Part interchange
54562, 096-195, 44139AE11A, 44139AE10A, 4367, 4181, 44659AA00A, 52622, 
...View more
Show less
Catalytic Converter - Front Side - Walker 82525
Walker
Walker 82525 Catalytic Converter, Front Side
$412.99
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3-year warranty
90 days free return
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Vehicle: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionFront
Part interchange
82525
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Catalytic Converter - Rear Side - Walker 83217
Walker
Walker 83217 Catalytic Converter, Rear Side
$234.99
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: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
83217
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Catalytic Converter - Rear Side - Walker 82624
Walker
Walker 82624 Catalytic Converter, Rear Side
$710.99
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: 2004 Subaru Legacy
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
82624
Show less
Page 1 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!