Menu
Search
Advertising Disclosure

10 Best catalytic cleaners of 2026

Save up to 30% off
  • Best Choice

    1

    Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.
    Liqui Moly
    9.7
    Exceptional

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

    28% Off
    • Part Number:7110
    • Application:Gasoline engines with catalytic converter
    • Product Type:Catalytic system cleaner
    • Volume:300 ml
    • Cleans:Injection system and combustion chamber
  • Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
    Careful review Our team ensures quality, value, and fit based on real user feedback
    Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
    Real users impact
    • Thousands of users trust our site daily
    • Based on millions of stores and reviews
    • Shoppers influence our rankings
  • Value for Money

    2

    Cataclean Fuel & Exhaust System Cleaner for Gasoline Engines, 16 oz, 2 Pack
    Cataclean
    9.4
    Excellent

    Cataclean Fuel & Exhaust System Cleaner for Gasoline Engines, 16 oz, 2 Pack

  • 3

    Cataclean Fuel & Exhaust System Cleaner for Gasoline Engines, 16 oz
    Cataclean
    9.1
    Excellent

    Cataclean Fuel & Exhaust System Cleaner for Gasoline Engines, 16 oz

  • 4

    MotorPower Care Catalytic Converter Cleaner 2-Pack — Pass Smog & Emissions Test, Fix P0420/P0430 Check Engine Light | O2 Sensor & EGR Cleaner | Fuel Additive, 8.45 fl oz Each
    MotorPower Care
    9.0
    Excellent

    MotorPower Care Catalytic Converter Cleaner 2-Pack — Pass Smog & Emissions Test, Fix P0420/P0430 Check Engine Light | O2 Sensor & EGR Cleaner | Fuel Additive, 8.45 fl oz Each

  • 5

    Ciirvoe 3Pcs Catalytic Converter Cleaner Kit,Boost Up Catalytic Convertor Cleaner,Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil,Fuel System Treatment Oil Additive
    Ciirvoe
    8.9
    Very Good

    Ciirvoe 3Pcs Catalytic Converter Cleaner Kit,Boost Up Catalytic Convertor Cleaner,Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil,Fuel System Treatment Oil Additive

  • See Today’s Deals & Prices

  • 6

    Dura Lube Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive | 16 Fl oz, 2-Pack
    DURA LUBE
    8.8
    Very Good

    Dura Lube Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive | 16 Fl oz, 2-Pack

    • manufacturer part number: HL-40240-02
    • exterior: Box
    • country of origin: USA
    • customer reviews:4.1 4.1 out of 5 stars 165 ratings 4.1 out of 5 stars
    • asin:B0BS1WMRRS

  • 7

    Rislone 4720 Cat Complete Fuel, Exhaust, Emissions System Cleaner, 1-Pack
    Rislone
    8.7
    Very Good

    Rislone 4720 Cat Complete Fuel, Exhaust, Emissions System Cleaner, 1-Pack

    30% Off

  • 8

    Dura Lube Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. oz., (PN: HL-402409 PDQ3)
    DURA LUBE
    8.6
    Very Good

    Dura Lube Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. oz., (PN: HL-402409 PDQ3)

    • product dimensions: 2.62 x 2.62 x 9.12 inches
    • manufacturer part number: HL-402409
    • item weight: 1 pounds
    • special features: EMISSIONS
    • customer reviews:4.0 4.0 out of 5 stars 4,877 ratings 4.0 out of 5 stars

  • 9

    Cataclean (120007-2PK) Fuel and Exhaust System Cleaner - 16 fl. oz., (Pack of 2)
    Cataclean
    8.5
    Good

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

    • manufacturer part number:‎120007-2PK
    • exterior:N/A
    • country of origin:N/A
    • customer reviews:4.3 4.3 out of 5 stars 1,004 ratings 4.3 out of 5 stars
    • asin:B00MXF4N8U

  • 10

    MotorPower Care Catalytic Converter Cleaner — Pass Emissions Test & Fix P0420 | Cleans O2 Sensor, EGR Valve & Exhaust System | Fuel Additive for Gas & Hybrid Engines, 8.45 fl oz
    MotorPower Care
    8.3
    Good

    MotorPower Care Catalytic Converter Cleaner — Pass Emissions Test & Fix P0420 | Cleans O2 Sensor, EGR Valve & Exhaust System | Fuel Additive for Gas & Hybrid Engines, 8.45 fl oz