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10 Best catalytic cleaners of 2025

Save up to 31% off
  • Best Choice

    1

    Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 16oz - Pack of 2, (120019)
    Cataclean

    Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 16oz - Pack of 2, (120019)

    9.7
    Exceptional
    Our Rating
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  • Value for Money

    2

    Cataclean (120007-2PK) Fuel and Exhaust System Cleaner - 16 fl. oz., (Pack of 2)
    Cataclean

    Cataclean (120007-2PK) Fuel and Exhaust System Cleaner - 16 fl. oz., (Pack of 2)

    9.6
    Exceptional
    Our Rating

  • 3

    Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.
    Liqui Moly

    Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.

    9.4
    Excellent

  • 4

    2X Cans Catalytic Converter Cleaner, Oxygen sensor cleaner, pass emissions, SMOG, fuel additive, combustion chamber cleaner
    MotorPower Care

    2X Cans Catalytic Converter Cleaner, Oxygen sensor cleaner, pass emissions, SMOG, fuel additive, combustion chamber cleaner

    • Application Method:No disassembly, easy use
    • Performance Improvement:Fix P0420 & P0430
    • Cleaner Function:Clean catalytic converter
    • Function:N/A
    • Dimensions:N/A
    9.3
    Excellent

  • 5

    Dura Lube Severe Catalytic and Exhaust Treatment | 16 oz., Single
    DURA LUBE

    Dura Lube Severe Catalytic and Exhaust Treatment | 16 oz., Single

    9.2
    Excellent
    Our Rating
  • See Today’s Deals & Prices

  • 6

    3 PCS Catalytic Converter Cleaner Auto Parts Engine, 120 ml Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil, Fuel System Treatment Oil for Gas and Diesel Car
    Generic

    3 PCS Catalytic Converter Cleaner Auto Parts Engine, 120 ml Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil, Fuel System Treatment Oil for Gas and Diesel Car

    31% Off
    9.1
    Excellent

  • 7

    Catalytic Converter Cleaner Pass Emissions Test Cleans Catalyst, Oxygen sensor and combustion chamber cleaner, fuel additive
    MotorPower Care

    Catalytic Converter Cleaner Pass Emissions Test Cleans Catalyst, Oxygen sensor and combustion chamber cleaner, fuel additive

    9.0
    Excellent
    Our Rating

  • 8

    Catalytic Converter Cleaner Kit Catalytic System Cleaner Boost Up Catalytic Convertor Cleaner Fuel System Treatment Oil for Gas and Diesel Car,120ML
    Generic

    Catalytic Converter Cleaner Kit Catalytic System Cleaner Boost Up Catalytic Convertor Cleaner Fuel System Treatment Oil for Gas and Diesel Car,120ML

    14% Off
    8.9
    Very Good

  • 9

    KXC 2PCS Catalytic Converter Cleaner kit，Catalytic Converter Cleaner, Catalytic Converter Cleaner，Fuel System Treatment Oil for Gas and Diesel Car.
    KXC

    KXC 2PCS Catalytic Converter Cleaner kit，Catalytic Converter Cleaner, Catalytic Converter Cleaner，Fuel System Treatment Oil for Gas and Diesel Car.

    • Application Method:N/A
    • Performance Improvement:N/A
    • Cleaner Function:N/A
    • Function:Reduces carbon build-up
    • Dimensions:6.46 x 4.53 x 1.93 inches
    8.8
    Very Good

  • 10

    CRC Guaranteed to Pass Emissions Test Formula, 12 Fluid Ounce
    CRC

    CRC Guaranteed to Pass Emissions Test Formula, 12 Fluid Ounce

    28% Off
    • Fuel Economy:Improves fuel economy
    • Injector Cleaning:Removes deposits
    • Performance Enhancements:Improves power performance
    • Lubricity:N/A
    • Water Removal:N/A
    8.7
    Very Good
    Our Rating