Advertising Disclosure

Best 5 catalytic converter cleaners - Holiday Sale 2025

Last Updated - December 14, 2025

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

MotorPower Care, catalyst converter cleaning kit

Catalytic Converter Cleaner new technology effective cleaning solution kit

Picked by 469 people in the last week

MotorPower Care, catalyst converter cleaning kit

$47.98

More Details
Main highlights
- the most effective and inexpensive cleaning solution
- Will fix P0420 & P0430 codes if Catalyst not broken
- Not required disassembling, easy to use
- Clean your vehicle catalytic converter instead of replacing it
- Clean and protect catalytic converter material
$47.98
2

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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)

Cataclean

$45.95

More Details
Main highlights
- 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%!
- Maintain Catalytic Converter Efficiency: Regular use of Cataclean helps prevent carbon accumulation in your catalytic converter, ensuring it operates efficiently and prolongs its lifespan.
- Enhance Fuel Economy and Performance: Cataclean cleans fuel injectors and cylinder heads, leading to improved fuel combustion, better mileage, and restored engine power.
- 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.
- 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.
$45.95
3

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

hepanio

hepanio 3Pcs Catalytic Converter Cleaner,Catalytic Converter Cleaner Kit,Auto Parts Engine,Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil,Fuel System Treatment Oil Additive

hepanio

$14.99

More Details
Main highlights
- 【Simplified Vehicle Maintenance】 Just Pour One Bottle Into Your Fuel Tank During Refueling - No Mechanics Required, Works With All Gasoline, Diesel, Hybrid And Flex-Fuel Vehicles (Including High-Mileage Engines Over 75,000 Miles)
- 【Safety To Use】Safe For Gasoline, Diesel, Hybrid And Flex-Fuel Vehicles; Does Not Alter Fuel. Not For Use In 2-Stroke Or Oil/Gas Mix Engines. There Is No Need To Worry About Leakage Or Evaporation
- 【Optimize Engine Performance】This Fuel System Cleaner Ensures Smooth Fuel And Exhaust Flow, Reducing Engine Roughness, Improving Overall Performance, And Lowering Long-Term Maintenance Costs
- 【Fuel System Cleaner】--- Proper Fuel And Exhaust Flow Will Keep That Engine Start Easily And Run Smoothly, Which Will Also Cut Down On Maintenance Costs. Help Clean The Fuel Injection System, As Well As The Cylinders, Improving Overall Performance
- 【Catalytic Cleaner】Reduces Carbon Build-Up In Catalytic Converter,Fuel Injectors And Cylinder Heads Which Results In Improved Fuel Efficiency. Improves Overall Vehicle Performance-Including Driveability Issues Such As Power Reduction, Hesitation, Rough Idle, Hard Starts And Lost Fuel Economy
$14.99
4
Best Value
25% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Liqui Moly
25% Off

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

Liqui Moly

$17.85

$24.00
(25% Off)

More Details
Main highlights
- Suitable for all gasoline engines with a catalytic converter.
- Protects the catalytic converter from clogging with soot.
- Improves the combustion of the fuel.
- Cleans the injection system and the combustion chamber.
- Clean engines reduce fuel consumption and therefore CO2 emissions.
$17.85
$24.00 (25% Off)
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

stray poet

stray poet 3Pcs Catalytic Converter Cleaner,Catalytic Converter Cleaner Kit,Auto Parts Engine,Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil,Fuel System Treatment Oil Additive

stray poet

$15.99

More Details
Main highlights
- 【Simplified Vehicle Maintenance】 Just Pour One Bottle Into Your Fuel Tank During Refueling - No Mechanics Required, Works With All Gasoline, Diesel, Hybrid And Flex-Fuel Vehicles (Including High-Mileage Engines Over 75,000 Miles)
- 【Safety To Use】Safe For Gasoline, Diesel, Hybrid And Flex-Fuel Vehicles; Does Not Alter Fuel. Not For Use In 2-Stroke Or Oil/Gas Mix Engines. There Is No Need To Worry About Leakage Or Evaporation
- 【Optimize Engine Performance】This Fuel System Cleaner Ensures Smooth Fuel And Exhaust Flow, Reducing Engine Roughness, Improving Overall Performance, And Lowering Long-Term Maintenance Costs
- 【Fuel System Cleaner】--- Proper Fuel And Exhaust Flow Will Keep That Engine Start Easily And Run Smoothly, Which Will Also Cut Down On Maintenance Costs. Help Clean The Fuel Injection System, As Well As The Cylinders, Improving Overall Performance
- 【Catalytic Cleaner】Reduces Carbon Build-Up In Catalytic Converter,Fuel Injectors And Cylinder Heads Which Results In Improved Fuel Efficiency. Improves Overall Vehicle Performance-Including Driveability Issues Such As Power Reduction, Hesitation, Rough Idle, Hard Starts And Lost Fuel Economy
$15.99

Best 5 catalytic converter cleaners - Holiday Sale 2025

Catalytic Converter Cleaner new technology effective cleaning solution kit

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)

hepanio 3Pcs Catalytic Converter Cleaner,Catalytic Converter Cleaner Kit,Auto Parts Engine,Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil,Fuel System Treatment Oil Additive

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

stray poet 3Pcs Catalytic Converter Cleaner,Catalytic Converter Cleaner Kit,Auto Parts Engine,Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil,Fuel System Treatment Oil Additive

You may also like...

Cataclean Fuel & Exhaust System Cleaner – Pass Emissions Tests – Clear Check Engine Lights – Restores Catalytic Converters, DPF Filters and Cleans Fuel Systems, 16oz (120007)

ClearLover Auto Parts Engine Boost Up Cleaner Catalytic Converter Cleaner Fuel System Treatment Additive for Gasoline and Diesel Car (6Pcs)

2025 Catalytic Cleaners, Upgrade Boost up Catalytic System Cleaner, Fuel & Exhaust System CleaneR, Catalytic Converter Cleaning Solution, Engine Carbon Cleaner for Performance Optimization (5)

RAYHONG Catalytic Converter Cleaner - Engine & Exhaust System Carbon Removal Additive, 120ml Fuel Treatment for Gas/Diesel Vehicles, Auto Parts Pipe Cleaner Oil Maintenance (Pack fo 4)

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

Timeno 3Pcs Catalytic Converter Cleaner, Boost Up Catalytic Convertor Cleaner, Pipe Carbon Removal Cleaner Treatment Additive Oil, Fuel System Treatment Oil Additive for Gas and Diesel Car

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

Catalytic Converter Cleaner for Gas & Diesel Cars – Engine & Exhaust Carbon Removal, Fuel System Treatment Additive Oi (120ML,3PCS)

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

2Pcs Catalytic Converter Cleaner, Boost Up Catalytic Converter Cleaner, Car Engine Fuel and Exhaust System Cleaners Exhaust Pipe Carbon Deposit Cleaning for Gas and Diesel Car

Sign up and get exclusive special deals