Best Fuel System Cleaners in 2026

RESTORES PERFORMANCE: Fuel injector cleaner cleans entire fuel system to help restore lost engine power

INCREASED RESPONSIVENESS: Helps restore lost acceleration and throttle body response

REDUCES CARBON DEPOSITS: Injector cleaner helps remove carbon buildup for increased power and acceleration

For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.

Cleans, restores, protects the entire fuel system (fuel injectors, carburetors, intake valves and combustion chambers)

Restores: lost power, acceleration, lost fuel economy, and operation of the fuel gauge sensor

Contains 100% High-Energy Solvent Technology

Helps Keep Injectors Or Carb(S) And Intake Ports And Valves Clean

Quickly Disperses Moisture And Dissolves Gum, Varnish, And Other Fuel Residues

Use in gas, ethanol/flex fuel, diesel & biodiesel engines

Restores fuel economy and improves engine performance

PEA (polyetheramine) effectively removes carbon deposits from the entire fuel & oil systems

Concentrated formula

Stabilizes fuel

Inhibits corrosion

Increases power output

Restores flow to fuel injectors

Removes accumulated deposits from the oxygen sensor

Better engine performance

Lower fuel consumption

Lower pollutant emissions

DESIGNED TO EXCEED EXPECTATIONS: Red Line complete SI-1 fuel system cleaner treatment for cleaning and preventing corrosion in fuel systems

PERFORM AND PROTECT: Fuel additive cleans injectors, carburetors, valve and combustion chamber deposits with a powerful, concentrated blend of high-temp and low-temp detergents

EFFICIENT FUEL BURN: Gas treatment that enhances gasoline stability, while reducing the build up of gum and varnish formation

Save gas by keeping fuel intake system clean

Helps restore performance

Removes deposits from entire fuel system

Two 5.25 fl oz bottles of STP High Mileage Fuel Injector & Carburetor Cleaner Treatment

Fuel treatment additives help remove deposit buildups to save gas

Friction modifier in the fuel additive combats upper cylinder friction

Selling brand of premium gas-line antifreeze

Absorbs 5 times more water than regular gas dryers

Removes water from fuel system

3-in-1 fuel additive keeps new engines clean and improves vehicle's performance

Improves fuel economy an average of 3.2 percent

Increases horsepower an average of 2.6 percent

Powerful detergents and HEST solvents

Restores lost power, reduce rough idle and hesitation, restore octane requirements, and improve overall drivability. Improves fuel economy, disperses moisture, and stabilizes gasoline

Dissolves fuel residue and carbon deposits

Save gas by keeping fuel intake system clean

Prevent fuel line freeze

Prevent deposit buildup

ALL PURPOSE CLEANING REFILL CARTRIDGES: This two-pack refill cartridge works with the Clorox All Purpose Cleaning System, so you can clean with less plastic waste and free up some storage space under the sink; Package may vary

REFILL SYSTEM: The refill system reduces plastic waste with the reusable bottle that can be used for over 10 years, and it eliminates the delivery of cleaning liquids which saves on fuel waste

EPA SAFER CHOICE CERTIFIED: Better for you and better for the environment, this powerful multi-purpose bleach-free cleaner is certified safe for use around kids, pets and food

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 driveability issues such as power reduction, hesitation, rough idle, hard starts and lost fuel economy

Designed for direct fuel rail and injection cleaning

Debris that is loosened or dissolved is then combusted and ultimately removed through the vehicles exhaust system

Machined from stainless steel, the hydraulic cylinder has a 22 ounce capacity, and is able to handle pressures up to 30,000 PSI

Directions: add full contents to gas tank at least every 3,000 miles; treats up to 42 gallons, highly recommended for all direct injection and turbo engines.

Severe formulation cleans the entire fuel delivery system and helps aid the phase separation occuring in fuel.

Helps aid loss of fuel economy, poor accelertion, engine hesitation and knock

Automotive Non-dismantle fuel injector cleaner tool has anti-corrosion, anti-friction connectors for fast-connection and anti-friction oil tubes for all cleaning fluid.

The system features with high and low pressure cleaning function,also it can clean the whole fuel system including throttle valve, fuel nozzle and combustion chamber.

This injector clean kit includes many different adapters, covering almost all the EU, Asia, USA cars and light trucks.

Non-Dismantle Fuel System Cleaner: This Fuel System is used to clean fuel injector, air intake system and three-way catalytic converter. It is a free disassembly cleaning tools that you can use it without the knowledge of car assembling.

Special Handing: Non-dismantle cleaner has special handling one-way valves to seal up gas and durable pressure regulating valves.

Multi-function: Our cleaner tool not only features with high and low pressure cleaning function, but also with the whole fuel system including throttle valve, fuel nozzle and combustion chamber...

Cleans the diesel particulate filter in installed condition

Is added to the tank before filling

Helps avoid expensive repairs

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.

Portable size, 1 bottle at a time. There is no need to worry about leakage or evaporation. Very convenient, add a bottle every time you refuel.

Makes engines start easily and run smoothly; improves fuel economy and reduces emissions

Cleans valves and injectors of carbon deposits, gums and varnish for maximum performance, increased fuel efficiency and reduced emissions

100% Brand New and High Quality!

Material: Stainless steel

Capacity of the bottle: 600ml

See product description below for vehicle fitment or to verify fitment for your specific vehicle, please contact us, and provide us with your VIN that can be found on your vehicle or your insurance card.

Dual Antioxidant formula protects jets and fuel system from gum and varnish

Stabilizes fuel for up to 2 years

Instantly dissolves deposits on venturi, linkages, butterflies and PCV systems to improve fuel system performance and enhance fuel economy.

Harmless to catalytic converters and oxygen sensors.

50-State Formula. Meets ALL state and federal VOC regulations.

Restores lost power and peak performance

Maximizes drivability, fuel economy, and injector life

Quickly dissolves gum, varnish, fuel residue, and carbon build-up

Cleans Fuel Injectors, Carburetors, and Intake Valves - The fully synthetic formula provides superior intake valve deposit control, port fuel injection, and carburetor detergency while clearing out chamber deposits that cause pre-ignition and run-on

Cleans Every Part of Your Engine - This advanced formula keeps your car engine cleaner by working as a fuel tank cleaner, a fuel injector cleaner, a carburetor cleaner, and more

Improves Power and Performance - By clearing out deposits from all components of your engine, this multipurpose cleaner improves overall engine performance, including power and mileage

One 4 oz bottle treats 10-20 gallons of gasoline, 30-55 gallons of methanol, or 5-10 gallons of diesel.

Fuel fragrances are intended to set you apart from the rest and be a crowd pleaser.

Does not enhance or inhibit performance and is safe to use in all internal combustion engines.

Add to fuel to help clean fuel injectors & restore injector spray pattern

Adds lubricity to upper cylinders; Safe for all types of gasoline fuel injection engines

Helps recover lost MPG and reduce exhaust emissions