Catalytic converter cleaner is essential for maintaining your vehicle's performance and ensuring optimal emissions control. In 2025, the market offers a variety of top-rated products designed to effectively clean and restore your catalytic converter, enhancing fuel efficiency and reducing harmful emissions. These cleaners work by breaking down carbon deposits and other contaminants that can clog your system, ultimately prolonging the life of your vehicle's exhaust components. Whether you're a DIY enthusiast or a professional mechanic, choosing the right catalytic converter cleaner can make a significant difference in your car's overall health.
SALE
−$6.05
Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.
- Protects the catalytic converter from clogging with soot.
- Cleans the injection system and the combustion chamber.
- Improves the combustion of the fuel.
- Clean engines reduce fuel consumption and therefore CO2 emissions.
- Suitable for all gasoline engines with a catalytic converter.
$17.95
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)
- Pass Emissions Tests with Confidence: Cataclean is specifically formulated to reduce carbon build-up and clean vital components like catalytic converters, DPF filters and oxygen sensors, helping your vehicle meet stringent smog and emissions standards. Reduces hydrocarbon emissions on gas motors by up to 50%!
- Enhance Fuel Economy and Performance: Cataclean cleans fuel injectors and cylinder heads, leading to improved fuel combustion, better mileage, and restored engine power.
- Clear Check Engine Lights: By cleaning your car’s exhaust and fuel systems, Cataclean restores optimal performance and helps resolve common check engine light codes like P0420, P0430, P0171, P0174, P0300, and P0401, potentially saving you thousands on repairs.
- Maintain Catalytic Converter Efficiency: Regular use of Cataclean helps prevent carbon accumulation in your catalytic converter, ensuring it operates efficiently and prolongs its lifespan.
- Easy Application: Simply add Cataclean to your fuel tank as directed; no special tools or mechanical skills required, making it a convenient addition to your vehicle maintenance routine. Safe for use in gasoline, diesel and Hybrid engines. 50 state legal.
$45.95
2X Cans Catalytic Converter Cleaner, Oxygen sensor cleaner, pass emissions, SMOG, fuel additive, combustion chamber cleaner
- Clean and protect catalytic converter material
- Not required disassembling, easy to use
- Clean your vehicle catalytic converter instead of replacing it
- Can fix P0420 & P0430 codes if Catalyst not broken
$29.99
SALE
−$1.03
Dura Lube Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. oz., (PN: HL-402409 PDQ3)
- PERFORMANCE. Add to your vehicle anytime to help fuel systems and engine performance.
- RECOMMENDATION. Use before replacing catalytic converter.
- SHIELD. Protects catalytic system from harmful oil and maintains catalytic efficiency.
- REDUCTION. Reduces phosphorus and zinc retention levels at catalyst inlet.
- SAVING. Help increase fuel economy, fit type: universal fit work on all engines.
$17.96
Catalytic Converter Cleaner Pass Emissions Test Cleans Catalyst, Oxygen sensor and combustion chamber cleaner, fuel additive
- Effectively cleans and unclogs catalytic converters, improving overall performance.
- Helps restore lost horsepower and fuel efficiency.
- Reduces the risk of engine damage.
- Easy to use additive that can be directly added to the fuel tank during refueling.
- Compatible with all gasoline and hybrid vehicles.
$17.00
Cataclean (120007-2PK) Fuel and Exhaust System Cleaner - 16 fl. oz., (Pack of 2)
- Using Cataclean can lower your total hydrocarbon emissions by up to 50 percent
- Reduces carbon build-up in catalytic converter, oxygen sensors, fuel injectors and cylinder heads which results in improved fuel efficiency
- Improves overall vehicle performance-including drivability issues such as power reduction, hesitation, rough idle, hard starts and lost fuel economy
- Safe for gasoline, diesel, hybrid and flex-fuel vehicles; does not alter fuel
- Not for use in 2-stroke or oil/gas mix engines
$45.95
SALE
−$3.99
Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 16oz
- Pass Emissions Tests with Confidence: Cataclean is specifically formulated to reduce carbon build-up and clean vital components like catalytic converters, DPF filters and oxygen sensors, helping your vehicle meet stringent smog and emissions standards. Reduces hydrocarbon emissions on gas motors by up to 50%!
- Enhance Fuel Economy and Performance: Cataclean cleans fuel injectors and cylinder heads, leading to improved fuel combustion, better mileage, and restored engine power.
- Clear Check Engine Lights: By cleaning your car’s exhaust and fuel systems, Cataclean restores optimal performance and helps resolve common check engine light codes like P0420, P0430, P0171, P0174, P0300, and P0401, potentially saving you thousands on repairs.
- Maintain Catalytic Converter Efficiency: Regular use of Cataclean helps prevent carbon accumulation in your catalytic converter, ensuring it operates efficiently and prolongs its lifespan.
- Easy Application: Simply add Cataclean to your fuel tank as directed; no special tools or mechanical skills required, making it a convenient addition to your vehicle maintenance routine. Safe for use in gasoline, diesel and Hybrid engines. 50 state legal.
$26.37
DURA LUBE 2 Pack Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. Oz, 2-Pack Combo Pack
- PERFORMANCE. Add to your vehicle anytime to help fuel systems and engine performance.
- USE BEFORE REPLACING CATALYTIC CONVERTER
- SHIELD. Protects catalytic system from harmful oil poisons and maintains catalytic efficiency.
- PROTECTS CATALYTIC SYSTEM FROM OIL POISONS AND MAINTAINS CATALYTIC EFFICIENCY
- REDUCES PHOSPOHORUS AND ZINC RETENTION LEVELS AT CATALYST INLET
$35.99
Catalytic Converter Cleaner new technology effective cleaning solution kit
- the most effective and inexpensive cleaning solution
- Clean and protect catalytic converter material
- Not required disassembling, easy to use
- Clean your vehicle catalytic converter instead of replacing it
- Will fix P0420 & P0430 codes if Catalyst not broken
$47.98
Nitrox Catalytic Converter Petrol Cleaner, 17 Fl Oz
- RESTORE YOUR ENGINE: Breathe new life into your engine! This multi-purpose formula gets to work instantly, cleaning away harmful carbon and resin deposits from the entire engine, fuel and exhaust system, boosting MPG, and reducing harmful emissions from your car.
- SAIL THROUGH EMISSIONS TESTS: Use just before your MOT to help you pass emissions tests
- INSTANT EFFECT: Clean Cat's advanced formula cleans your system straight away
- EASY USE: Pour straight into your fuel tank and let Clean Cat get to work
- PERFORMANCE BOOST: Clean and restore your engine to its original performance
$28.49
Last update on 2025-05-04 / Affiliate links / Images from Amazon Product Advertising API