AdditivesAll Auto PaintATV / UTV Oils & FluidsAutomotive Bulk BuysAutomotive Cleaners & DegreasersAutomotive FluidsAutomotive Paints and CoatingsCar WashCar Wash SuppliesEngine & Powertrain Replacement PartsExhaust Parts & Emissions PartsExterior Car DetailingHeadlight RestorationHolley BrandsInterior Car DetailingMaintenance EquipmentMotorcycle Oils & FluidsReplacement Auto PartsRV Cleaners
Sort by|
AdditivesAll Auto PaintATV / UTV Oils & FluidsAutomotive Bulk BuysAutomotive Cleaners & DegreasersAutomotive FluidsAutomotive Paints and CoatingsCar WashCar Wash SuppliesEngine & Powertrain Replacement PartsExhaust Parts & Emissions PartsExterior Car DetailingHeadlight RestorationHolley BrandsInterior Car DetailingMaintenance EquipmentMotorcycle Oils & FluidsReplacement Auto PartsRV Cleaners
Catalytic Agent(307)
Uses item details. Price when purchased online
Rollback Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz From $19.54
Sponsored
From$1954
Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz
7934.2 out of 5 Stars. 793 reviews
Save with
XADO RED CAT Shield – Catalytic Converter & Combustion System Cleaner with Revitalizant, Prevents Clogging & Reduces Emissions, 250 ml $25.99
Sponsored
$2599
current price $25.99XADO RED CAT Shield – Catalytic Converter & Combustion System Cleaner with Revitalizant, Prevents Clogging & Reduces Emissions, 250 ml
Clearance 2Pcs Car Converter Exhaust Cleaning Liquid, Catalytic Converter Cleaner Car Cleaning Agent Remove Carbon Deposits Engine Interior Cleaning Exhaust Gas Catalysis 120ML From $7.99
Sponsored
From$799
2Pcs Car Converter Exhaust Cleaning Liquid, Catalytic Converter Cleaner Car Cleaning Agent Remove Carbon Deposits Engine Interior Cleaning Exhaust Gas Catalysis 120ML
114.2 out of 5 Stars. 11 reviews
Alvantor Catalytic Converter Cleaner Carbon Deposit Remover Fuel Additive Engine Booster, 4fl.oz From $6.49
Sponsored
From$649
Alvantor Catalytic Converter Cleaner Carbon Deposit Remover Fuel Additive Engine Booster, 4fl.oz
Save with
Rollback Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz From $19.54
5 options
Available in additional 5 optionsFrom$1954
Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz
7934.2 out of 5 Stars. 793 reviews
Save with
50+ bought since yesterday Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 16 oz From $27.94
5 options
Available in additional 5 optionsFrom$2794
Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 16 oz
2124.4 out of 5 Stars. 212 reviews
Save with
Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 16 oz From $27.94
5 options
Available in additional 5 optionsFrom$2794
Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 16 oz
6134.1 out of 5 Stars. 613 reviews
Save with
Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 16 oz (Pack of 2) $46.99
$4699
current price $46.99Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 16 oz (Pack of 2)
1424.6 out of 5 Stars. 142 reviews
Save with
Clearance Car Converter Exhaust Cleaning Liquid, Catalytic Converter Cleaner Car Cleaning Agent Remove Carbon Deposits Engine Interior Cleaning Exhaust Gas Catalysis 120ML From $7.99
4 options
Available in additional 4 optionsFrom$799
Car Converter Exhaust Cleaning Liquid, Catalytic Converter Cleaner Car Cleaning Agent Remove Carbon Deposits Engine Interior Cleaning Exhaust Gas Catalysis 120ML
114.2 out of 5 Stars. 11 reviews
EZ Pass Emissions Treatment Automotive Additive Catalytic & Exhaust Cleaner 16 fl oz $21.48 $1.34/fl oz
$2148
current price $21.48$1.34/fl oz
EZ Pass Emissions Treatment Automotive Additive Catalytic & Exhaust Cleaner 16 fl oz
Save with
2X Cans Catalytic Converter Cleaner, Oxygen sensor cleaner, pass emissions, SMOG, fuel additive, combustion chamber cleaner $29.99
Sponsored
$2999
current price $29.992X Cans Catalytic Converter Cleaner, Oxygen sensor cleaner, pass emissions, SMOG, fuel additive, combustion chamber cleaner
394 out of 5 Stars. 39 reviews
Save with
Solder-It Catalytic Converter Cleaner and Deodorizer (16 fl oz) | Fuel System Cleaner | EGR Valve, Combustion Chamber, and Oxygen Sensor Cleaner | Catalytic Cleaner Fuel Additive for Gasoline Engines $16.72
$1672
current price $16.72Solder-It Catalytic Converter Cleaner and Deodorizer (16 fl oz) | Fuel System Cleaner | EGR Valve, Combustion Chamber, and Oxygen Sensor Cleaner | Catalytic Cleaner Fuel Additive for Gasoline Engines
323.7 out of 5 Stars. 32 reviews
Molecure Catalytic Restore Emission Treatment Catalytic Converter Cleaner & Oxygen Sensor Fuel Additive Reduces Carbon Buildup 12 oz Bottle, Treats Up to 20 Gallons $15.19
$1519
current price $15.19Molecure Catalytic Restore Emission Treatment Catalytic Converter Cleaner & Oxygen Sensor Fuel Additive Reduces Carbon Buildup 12 oz Bottle, Treats Up to 20 Gallons
264.8 out of 5 Stars. 26 reviews
Three-way catalytic cleanerengine internal disassembly free cleaning.exhaust gas decarbonization cleaning agent springtok From $6.99
2 options
Available in additional 2 optionsFrom$699
Three-way catalytic cleanerengine internal disassembly free cleaning.exhaust gas decarbonization cleaning agent springtok
Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 3 Liter Jug - Treats up to 30 Gal of Fuel $76.25 $25.42/l
$7625
current price $76.25$25.42/l
Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 3 Liter Jug - Treats up to 30 Gal of Fuel
674.2 out of 5 Stars. 67 reviews
Save with
XADO RED CAT Shield Catalytic Converter & Combustion System Cleaner with Revitalizant, Prevents Clogging & Reduces Emissions, 250 ml $25.99
$2599
current price $25.99XADO RED CAT Shield Catalytic Converter & Combustion System Cleaner with Revitalizant, Prevents Clogging & Reduces Emissions, 250 ml
Automotive Cleaning Agent, Catalytic Converter Cleaner, Engine Disassembly Cleaning Exhaust Gas Removal Carbon Deposition, Gasoline Additive 120ml
Automotive Cleaning Agent, Catalytic Converter Cleaner, Engine Disassembly Cleaning Exhaust Gas Removal Carbon Deposition, Gasoline Additive 120ml
15 out of 5 Stars. 1 reviews
YFTDEF Automotive Cleaning Agent, Catalytic Converter Cleaner, Carbon Deposit Removal, Engine Maintenance, Gasoline Additive, Optimal Performance, 4.06oz Bottle From $5.29
From$529
YFTDEF Automotive Cleaning Agent, Catalytic Converter Cleaner, Carbon Deposit Removal, Engine Maintenance, Gasoline Additive, Optimal Performance, 4.06oz Bottle
15 out of 5 Stars. 1 reviews
Volpex Catalytic agents,Catalytic Converter Cleaner Kit,Boost Up Catalytic Convertor Cleaner $32.99
$3299
current price $32.99Volpex Catalytic agents,Catalytic Converter Cleaner Kit,Boost Up Catalytic Convertor Cleaner
Clearance Snmubt 250ML Car Three-Way Catalytic Converter Engine Cleaner, Carbon Deposit Removing Agent Booster Cleaner for Gasoline Vehicles, Safe Exhaust System Treatment Was $8.48
Snmubt 250ML Car Three-Way Catalytic Converter Engine Cleaner, Carbon Deposit Removing Agent Booster Cleaner for Gasoline Vehicles, Safe Exhaust System Treatment
VELIMO 2026 New Catalytic Converter Cleaner Engine Booster Cleaner 120Ml3,Carbon Deposit Removing Agent,Safe for Gasoline,Hybrid and Flex-Fuel Vehicles for Maintenance,Cleaning,Performance,Engine $12.37
$1237
current price $12.37VELIMO 2026 New Catalytic Converter Cleaner Engine Booster Cleaner 120Ml3,Carbon Deposit Removing Agent,Safe for Gasoline,Hybrid and Flex-Fuel Vehicles for Maintenance,Cleaning,Performance,Engine
1pc Engine Carbon Cleaner 120ml - Oxygen Sensor & Throttle Body Cleaner, Catalytic Converter Cleaning Agent, Fuel Injector Decarbonizer, Restores Engine Power, Reduces Emissions From $8.02
From$802
1pc Engine Carbon Cleaner 120ml - Oxygen Sensor & Throttle Body Cleaner, Catalytic Converter Cleaning Agent, Fuel Injector Decarbonizer, Restores Engine Power, Reduces Emissions
kladzum Automotive Cleaning Fuel Injector Cleaner, Agent Carburetor Throttle Catalytic Converter Cleaner, Exhaust Gas Removal Carbon Deposition Stabilizer Gasoline Additive 120ml From $3.47
From$347
kladzum Automotive Cleaning Fuel Injector Cleaner, Agent Carburetor Throttle Catalytic Converter Cleaner, Exhaust Gas Removal Carbon Deposition Stabilizer Gasoline Additive 120ml
YFTDEF Automotive Cleaning Agent, 4oz Catalytic Converter Cleaner, Engine Performance Booster, Reduces Emissions, Easy Cleaning for Gasoline Vehicles, Engine Additive
YFTDEF Automotive Cleaning Agent, 4oz Catalytic Converter Cleaner, Engine Performance Booster, Reduces Emissions, Easy Cleaning for Gasoline Vehicles, Engine Additive
kladzum Automotive Cleaning Fuel Injector Cleaner, Agent Carburetor Throttle Catalytic Converter Cleaner, Exhaust Gas Removal Carbon Deposition Stabilizer Gasoline Additive 120ml From $13.67
From$1367
kladzum Automotive Cleaning Fuel Injector Cleaner, Agent Carburetor Throttle Catalytic Converter Cleaner, Exhaust Gas Removal Carbon Deposition Stabilizer Gasoline Additive 120ml
Clearance Automotive Carbon Deposit Cleaner - Carburetor Throttle Engine Disassembly Cleaner, Exhaust Gas Removal Additive, 120ml From $7.98
From$798
Automotive Carbon Deposit Cleaner - Carburetor Throttle Engine Disassembly Cleaner, Exhaust Gas Removal Additive, 120ml
Catalytic Converter Cleaner for Car Engine Cleaner Powerful Booster Cleaner Oxygen Sensor The Fuel Injectors Cylinder Heads Cleaning Agent 120ml *3PCS
Catalytic Converter Cleaner for Car Engine Cleaner Powerful Booster Cleaner Oxygen Sensor The Fuel Injectors Cylinder Heads Cleaning Agent 120ml *3PCS
Three-Way Catalytic Converter Cleaning Agent, Powerful Engine Carbon Deposit Remover and Exhaust Purifier, Fuel Additive for Gasoline Vehicles to Improve Power and Reduce Emissions
Three-Way Catalytic Converter Cleaning Agent, Powerful Engine Carbon Deposit Remover and Exhaust Purifier, Fuel Additive for Gasoline Vehicles to Improve Power and Reduce Emissions
Clearance Lume Wear Catalytic Converter Cleaner and Engine Booster 120ml a Multi Purpose Cleaning Agent for Auto Exhaust System. Removes Carbon Buildup and Improves Efficienc $9.78 Was $10.99
Now$978
current price Now $9.78, Was $10.99$10.99
Lume Wear Catalytic Converter Cleaner and Engine Booster 120ml a Multi Purpose Cleaning Agent for Auto Exhaust System. Removes Carbon Buildup and Improves Efficienc
Catalytic Converter Cleaner Fuel Additive - Throttle & Engine Carbon Removal, 120ml Auto Gasoline Additive From $4.98
From$498
Catalytic Converter Cleaner Fuel Additive - Throttle & Engine Carbon Removal, 120ml Auto Gasoline Additive
Carburetor and Throttle Engine Cleaner | Automotive Catalytic Converter Cleaning Agent | Carbon Deposit and Exhaust Removal | Gasoline Additive | 120ml Bottle | Vehicle Performance Enhancer
Carburetor and Throttle Engine Cleaner | Automotive Catalytic Converter Cleaning Agent | Carbon Deposit and Exhaust Removal | Gasoline Additive | 120ml Bottle | Vehicle Performance Enhancer
Fasiaou 100ML Automobile Engine Internal Cleaning Agent Engine Carbon Cleaner For Catalytic Converters Was $8.95
Fasiaou 100ML Automobile Engine Internal Cleaning Agent Engine Carbon Cleaner For Catalytic Converters
Fuel System Cleaner, Carburetor Throttle Engine Deposit Remover, Catalytic Converter Cleaning Agent, Automotive Gasoline Additive, 2 Pack, 120ml Each From $9.99
From$999
Fuel System Cleaner, Carburetor Throttle Engine Deposit Remover, Catalytic Converter Cleaning Agent, Automotive Gasoline Additive, 2 Pack, 120ml Each
3 Set of And Exhaust System Cleaner High Mileage,Car Three-Way Catalytic Converter Cleaner,Engine Booster Cleaner,Carbon Deposit Removing Agent,Safe For Gasol（250ML Was $12.40
3 Set of And Exhaust System Cleaner High Mileage,Car Three-Way Catalytic Converter Cleaner,Engine Booster Cleaner,Carbon Deposit Removing Agent,Safe For Gasol（250ML
Bilqis Catalytic Converter Cleaner for Car Engine Cleaner Powerful Booster Cleaner Oxygen Sensor The Fuel Injectors Cylinder Heads Cleaning Agent
Bilqis Catalytic Converter Cleaner for Car Engine Cleaner Powerful Booster Cleaner Oxygen Sensor The Fuel Injectors Cylinder Heads Cleaning Agent
Snmubt 120ml Engine Carbon Cleaner, Fuel Additive for Catalytic Converter, Exhaust Gas Remover for Summer From $7.42
From$742
Snmubt 120ml Engine Carbon Cleaner, Fuel Additive for Catalytic Converter, Exhaust Gas Remover for Summer
Catalytic Converter Cleaner,Car Engine Booster Cleaner Powerful Oxygen Sensor The Fuel Injectors Cylinder Heads Cleaning Agent, 4oz(2Pcs) From $16.30
From$1630
Catalytic Converter Cleaner,Car Engine Booster Cleaner Powerful Oxygen Sensor The Fuel Injectors Cylinder Heads Cleaning Agent, 4oz(2Pcs)
Car Catalytic Converter Cleaner, 120ml Automotive Cleaning Agent for Carbon Deposit Removal and Engine Performance, Fuel Additive System Cleaner Revitalizant
Car Catalytic Converter Cleaner, 120ml Automotive Cleaning Agent for Carbon Deposit Removal and Engine Performance, Fuel Additive System Cleaner Revitalizant
Carburetor Throttle Engine Cleaner | Catalytic Converter | Automotive Gasoline Additive for Exhaust Carbon Deposit Removal | 120ml Bottle | 2/3/4/5 Pack
Carburetor Throttle Engine Cleaner | Catalytic Converter | Automotive Gasoline Additive for Exhaust Carbon Deposit Removal | 120ml Bottle | 2/3/4/5 Pack
Car Converter Exhaust Cleaning Liquid, Catalytic Converter Cleaner Car Cleaning Agent Remove Carbon Deposits Engine Interior Cleaning Exhaust Gas Catalysis 120ML $3.53
$353
current price $3.53Car Converter Exhaust Cleaning Liquid, Catalytic Converter Cleaner Car Cleaning Agent Remove Carbon Deposits Engine Interior Cleaning Exhaust Gas Catalysis 120ML
Automotive Carbon Removal Cleaning Agent, 120ml High-Performance Additive for Gasoline Engines, Suitable for Catalytic Converters, 2/4/6/8 Pack Auto Cleaning Solutions From $10.18
From$1018
Automotive Carbon Removal Cleaning Agent, 120ml High-Performance Additive for Gasoline Engines, Suitable for Catalytic Converters, 2/4/6/8 Pack Auto Cleaning Solutions
Dura Lube HL-402509-06 Diesel DPF and Catalytic Treatment Automobile Additives, 16 oz From $17.66
5 options
Available in additional 5 optionsFrom$1766
Dura Lube HL-402509-06 Diesel DPF and Catalytic Treatment Automobile Additives, 16 oz
44.8 out of 5 Stars. 4 reviews
Save with
Automotive Cleaning Agent for Carburetor Throttle Catalytic Converter - Fuel System Cleaner Gasoline Additive 120ml for Performance Boost Emission Reduction Car Maintenance $8.70 Was $9.79
Now$870
current price Now $8.70, Was $9.79$9.79
Automotive Cleaning Agent for Carburetor Throttle Catalytic Converter - Fuel System Cleaner Gasoline Additive 120ml for Performance Boost Emission Reduction Car Maintenance
Tgbvmt 100ML Automobile Internal Cleaning Agent Carbon Cleaner for Catalytic Converters Restore Engine Performance Remove Carbon Deposits Extend Vehicle Lifespan Improve Fuel Efficiency and Power Was $4.97
Tgbvmt 100ML Automobile Internal Cleaning Agent Carbon Cleaner for Catalytic Converters Restore Engine Performance Remove Carbon Deposits Extend Vehicle Lifespan Improve Fuel Efficiency and Power
SNGMN Catalytic Converter Cleaner, Automotive Engine Carbon Deposit Removal Additive, Fuel System Cleaning Agent for Exhaust Gas Maintenance, Gasoline Additive for Performance From $5.99
From$599
SNGMN Catalytic Converter Cleaner, Automotive Engine Carbon Deposit Removal Additive, Fuel System Cleaning Agent for Exhaust Gas Maintenance, Gasoline Additive for Performance
Popular in Catalytic Agent
- Ultrasonic Cleaner Fuel Injectors
- Intake Valve Cleaner
- STP Cleaners & De-greasers
- Catalytic Converter Cleaner
- Liquid Cooling Loop Cleaner
- Acpro Power Clean And Flush
- All Fuel System Cleaners
- BG 44K Fuel System Cleaners
- Techron Fuel System Treatments
- All Fuel Injection Cleaners
- Cleaners and De-Greasers
- Gumout Fuel Injector Cleaners
Related Products
Catalytic Converter Cleaner, Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil, Fuel System Treatment Oil for Gas and Diesel Car
Catalytic Converter Cleaner, Exhaust System Pipe Carbon Removal Cleaner Treatment Additive Oil, Fuel System Treatment Oil for Gas and Diesel Car$11.84current price $11.84YFTDEF Automotive Cleaning Agent, 4oz Catalytic Converter Cleaner, Engine Performance Booster, Reduces Emissions, Easy Cleaning for Gasoline Vehicles, Engine Additive
YFTDEF Automotive Cleaning Agent, 4oz Catalytic Converter Cleaner, Engine Performance Booster, Reduces Emissions, Easy Cleaning for Gasoline Vehicles, Engine Additive$11.99current price $11.99JGJJUGN Automotive Cleaning Agent - Catalytic Converter Cleaner, Carbon Deposit Remover, Throttle & Engine Cleaner, 120ml, Efficient Gasoline Additive for Optimal Performance
JGJJUGN Automotive Cleaning Agent - Catalytic Converter Cleaner, Carbon Deposit Remover, Throttle & Engine Cleaner, 120ml, Efficient Gasoline Additive for Optimal Performance$4.74current price $4.74Up to 70% Off! Anckoeil 30Ml Engine Cleaner Catalytic Converter Cleaner Engine Booster Cleaner
Up to 70% Off! Anckoeil 30Ml Engine Cleaner Catalytic Converter Cleaner Engine Booster Cleaner$4.84current price $4.84Kumdkd Catalytic Converter Cleaner 120ml - Automotive Gasoline Additive for Carbon Removal, Exhaust Gas Cleaning & Engine Maintenance (5-Pack Bundle)
Kumdkd Catalytic Converter Cleaner 120ml - Automotive Gasoline Additive for Carbon Removal, Exhaust Gas Cleaning & Engine Maintenance (5-Pack Bundle)$9.08current price $9.08Quality Chemical / Safe-X Acid-based Coil Cleaner / 1 Gallon (128 oz.)
Quality Chemical / Safe-X Acid-based Coil Cleaner / 1 Gallon (128 oz.)$29.00current price $29.00CRC 05319 Intake Valve Cleaner Automotive Cleaners, 11.0 oz
CRC 05319 Intake Valve Cleaner Automotive Cleaners, 11.0 oz$25.99current price $25.99U-View Detergent Concentrated Fuel Cleaner
U-View Detergent Concentrated Fuel Cleaner$29.50current price $29.50CRC Industries Intake Valve Cleaner, 11 Ounce
CRC Industries Intake Valve Cleaner, 11 Ounce$24.58current price $24.58Energy Release Fuel injector Cleaner 16 oz
Energy Release Fuel injector Cleaner 16 oz$11.66current price $11.66