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Shopping for Toyota-Sienna
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Toyota Sienna Catalytic Converter

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Front Catalytic ConverterFront Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Side Fit Federal Emissions A-Premium APCCT247
4.4289 Reviews
$133.99
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: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionFront Side
ColorNatural
Part interchange
641238, 674-863, 16392, 40373
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2-PC Catalytic Converter Front & Rear Fit Federal Emissions A-Premium APCCT246
A-Premium®
2-PC Catalytic Converter Front & Rear Fit Federal Emissions A-Premium APCCT246
$343.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity2
Installation PositionFront & Rear
ColorNatural
Part interchange
1714020030, 40373, 16392, 16393, 674-863, 674863
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Rear Catalytic Converter with Exhaust Manifold
A-Premium®
1-PC Catalytic Converter Rear Side Fit Federal Emissions A-Premium APCCT161
$197.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionRear Side
ColorNatural
Part interchange
674-820, 674820, 1714020030
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Front Right Catalytic Converter with Exhaust Manifold
A-Premium®
1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT252
4.4289 Reviews
$199.99
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: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
Part interchange
641299, 674-133, 41029, 171400P080, 171400P210
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Catalytic Converter
A-Premium®
1-PC Catalytic Converter Exhaust Fit Federal Emissions A-Premium APCCT242
$275.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionExhaust
ColorNatural
Part interchange
641204, EC40564, 40564
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Catalytic Converter
A-Premium®
1-PC Catalytic Converter Exhaust Fit Federal Emissions A-Premium APCCT666
$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: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionExhaust
ColorNatural
Part interchange
641298, 16624, 674-965
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2 Pcs Front Catalytic Converter
A-Premium®
2-PC Catalytic Converter Front Driver & Passenger Fit Federal Emissions A-Premium APCCT572
$478.99
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: Toyota Sienna
Item LocatedUnited States
Quantity2
Installation PositionFront Driver & Passenger
ColorNatural
Part interchange
641297, 641300, 40985, 41041
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Rear Catalytic Converter
A-Premium®
1-PC Catalytic Converter Rear Side Fit Federal Emissions A-Premium APCCT553
$233.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionRear Side
ColorNatural
Part interchange
645401, 40432, 16322
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Center Catalytic Converter
A-Premium®
1-PC Catalytic Converter Center Fit Federal Emissions A-Premium APCCT552
$323.99
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: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionCenter
ColorNatural
Part interchange
645400, 40431
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Front Left Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Left Driver Side Fit Federal Emissions A-Premium APCCT571
$167.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionFront Left Driver Side
ColorNatural
Part interchange
641297
Show less
Front Left Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Left Driver Side Fit Federal Emissions A-Premium APCCT733
$284.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionFront Left Driver Side
ColorNatural
Part interchange
641598, 16950, 674-322, 41333
Show less
Front Right Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT573
$250.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionFront Right Passenger Side
ColorNatural
Part interchange
641300, 40985, 41041
Show less
2 Pcs Front Catalytic Converter
A-Premium®
2-PC Catalytic Converter Front Driver & Passenger Fit Federal Emissions A-Premium APCCT789
$550.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity2
Installation PositionFront Driver & Passenger
Part interchange
16948, 641598, 641599
ConditionNew
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Front Passenger Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT788
$369.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionFront Right Passenger Side
Part interchange
16948, 641599
ConditionNew
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Front Passenger Catalytic Converter
A-Premium®
1-PC Catalytic Converter Exhaust Fit Federal Emissions A-Premium APCCT827
$335.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionExhaust
ColorNatural
Part interchange
171400P250, 1714031810, 16663, 17483, 641464, 674042
ConditionNew
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Front Passenger Firewall Catalytic Converter
A-Premium®
1-PC Catalytic Converter Front Right Passenger Side Fit Federal Emissions A-Premium APCCT828
$313.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionFront Right Passenger Side
Part interchange
16866, 17573, 674043, 641465
ConditionNew
Show less
Catalytic Converter with Exhaust Manifold
A-Premium®
1-PC Catalytic Converter Exhaust Fit Federal Emissions A-Premium APCCT248
$207.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionExhaust
ColorNatural
Part interchange
1714020030, 16393
Show less
Catalytic Converter
A-Premium®
1-PC Catalytic Converter Rear Side Fit Federal Emissions A-Premium APCCT180
$162.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Toyota Sienna
Item LocatedUnited States
Quantity1
Installation PositionRear Side
ColorNatural
Part interchange
16350, 18282, 174200A251, 174200A252, 174200P080
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AP Emissions 608414 Catalytic Converter
AP Emissions
AP Emissions 608414 Catalytic Converter
$156.99
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: Toyota Sienna
Item LocatedUnited States
Quantity1
Part interchange
608414
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AP Emissions 643052 Catalytic Converter
AP Emissions
AP Emissions 643052 Catalytic Converter
$865.99
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: Toyota Sienna
Item LocatedUnited States
Quantity1
Part interchange
643052
Show less
Page 1 of 5

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!