10 Best Engine Valve Cleaner of December 2025

• Easily installed through the air intake system
• Highest concentration PEA (Polyether Amine) detergency available
• Proven to remove up to 46% of GDI Intake Valve deposits in 1 hour
• 150X more concentrated than fuel additives
• Proven to clean intake valves on GDI engines and turbo systems

CRC

• AUTOOL HTS558 walnut powder engine Intake pipe valve clean machine is a advanced equipment for clean engine intake carbon deposition. Keeping engine in healthy status, make sure engine provide high quality power constantly.
• AUTOOL HTS558 is a special machine for engine Intake pipe and intake valve back side clean. Close intake valve, then spray walnut powder into engine intake via air pump(not include), meanwhile HTS558 will recycle walnut powder by vacuum. This is a closed loop. Walnut powder will impact carbon deposition on inner wall of intake pipe. After thousands of impact, carbon deposition will be clear thoroughly
• Chemical cleaning agent will corrodes pipe and shortens the lifetime of engine.Walnut powder is pure natural polish material. It show high performance in hardness, anti-pressure and wear-resisting. Walnut powder hardness was lower than metal but higher than carbon deposition. Take these advatages, AUTOOL HTS558 will clean clean intake pipe and back side of intake valve thoroughly but no damage.
• High-precision engine system is sensitive to foreign matter of intake pipe, such as BMW valvetronic system. That is why we need AUTOOL HTS558 to clean carbon deposition in intake pipe. Engine should be closed before clean, then turn crankshaft to close intake valve. AUTOOL HTS558 clean one intake pipe each time, 6 cylinder engine should cleaned 6 times one by one(and so on)
• AUTOOL HTS558 is specail for intake pipe and intake valve back side clean only, if you want to clean carbon deposition on injector/throttle valve/cylinder, please choose AUTOOL CT150,AUTOOL CT200 or AUTOOL C100. Walnut powder not include in package,please get it in local market; High pressure air pump is requirement(not include in package); Walnut powder residual in intake pipe will go to ashes in high temperature after engine start.

AUTOOL

• EXPERT CAR CARE: Helps Avoid Costly Engine Teardown and Improves Engine Performance and Life
• SAVES GAS: Saves Gas and Increases Horsepower
• SAFETY & PROTECTION: Dissolves Harmful Carbon Deposits
• AUTO HEALTH: Reduces Rough Idle
• POWER SIZE: Ships in a 20 Fl Oz Bottle

STP

• Highly concentrated, professional strength formula removes performance-robbing gum and deposits better than the competition
• Unmatched cleaning performance, utilizes Polyether amine (PEA)
• Helps restore lost horsepower and gas mileage
• Very easy to use - just spray and go

Gumout

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

Chevron

• Formulated for Use In All Fuel-Injected Gasoline Engines, Including GDI
• Contains Polyetheramine (“PEA”) to Dissolve Carbon Buildup in Combustion Chambers
• Cleans ALL Types of Intake Valves, Including Those Found in PFI, TBI, and GDI Engines
• Safe On Catalytic Converters and Oxygen Sensors
• Not For Use In Diesel Engines

Berryman Products

• Cleans injectors, carb jets and passageways
• Cleans and lubricates intake valves, pistons and cylinders
• Dissolves and cleans fuel residue in fuel systems
• Dissolves oil deposits in crankcase
• Clean timing chain tensioners and VVT actuators, quiet noisy lifters
• 100 percent pure petroleum
• EPA registered product
• Liquefies gum and varnish deposits or internal engine contaminants
• Special Shipping Information: This item cannot be returned and has additional shipping restrictions
• Special Shipping Information: This item cannot be returned and has additional shipping restrictions

Sea Foam

• Cures hesitation, stalls, pings, flat spots and rough idle due to carbon buildup
• Use to store and fog 2-cycle and 4-cycle engines
• Helps pass emission tests, epa registered
• Cleans intake valves and pistons
• Oxygen sensor safe

Sea Foam

• Better engine performance
• Lower fuel consumption
• Lower pollutant emissions
• Protection against corrosion and carburetor icing

Liqui Moly

• Cleans and frees sticking vanes of the variable turbo.
• Removes deposits (oil and unburned fuel particles) from the Diesel Oxidation Catalyst (DOC).Has a good cleaning effect on the EGR valve.
• Improves combustion and reduces soot emissions.
• Restores engine power.
• Wynn’s Diesel Turbo Cleaner is a chemical treatment for all diesel engines that clears blocked turbochargers.

Fastcar