10 Best Engine Bay Cleaner of December 2025

• Professional strength citrus-based formula
• Removes tough grease, grime, dirt and debris
• Works great on engines, machinery, tools, tires, rims and undercarriages
• Works fast to loosen and emulsify grease, oil, dirt and grime for easy rinse
• Super concentrated - can be diluted to desired needs

Chemical Guys

• Spray on Engine Cleaner and agitate the area with a detail brush to remove grease, oil, dirt, and grime.
• Loosens and breaks up grease, grime, and engine gunk
• Easy spray-on, agitate, and wipe clean application
• Cleans engine parts and readies your power plant for dressing

Griot's Garage

• FAST & EFFECTIVE - Engine degreaser for all car engines machine tools parts and more
• POWERFUL FORMULA - The perfect degreaser for removing the toughest oil grease mud dirt and grime off all of your vehicle engines
• SAFELY REMOVES DIRT & GRIME - Remove grime on vertical surfaces and other stubborn or hard to reach areas
• RESTORES YOUR ENGINE - Restore OEM factory shine & look on engines tools & parts
• PROFESSIONAL DEGREASER - Ideal for handling the toughest jobs that other degreasers can’t handle

Sonax

• Comes in 15 oz. Aerosol spray can with pleasant citrus scent
• Can be used to eliminate greasy dirt in the home, shop and garage
• Emulsifies and washes away dirt, grease and grime that collect on Modern engines
• Safe on most under-hood rubber, plastic and paint
• It contains no silicones (which are known for creating greasy, dust collecting buildup), is non-flammable, Non-corrosive to metals and has low VOC
• 2-in-one engine cleaner and detailer
• Makes Future Clean Up EasierMakes Future Clean Up EasierMakes Future Clean Up Easier
• Leaves a Satin-like finish
• Pleasant citrus scent

Gunk

• Auto & Truck Maintenance
• Country of manufacture: United States
• Manufacturer: GUNK

Gunk

• ✅ STRONG DEGREASER REMOVES DIRT & GRIME WITH EASE - Adam’s All-Purpose Cleaner is a fully functional, safe, and an effective product for any surface. At full strength, this product is versatile enough to cut even the toughest grease buildup. When diluted, it is extremely gentle and effective on sensitive surfaces.
• ✅ SUPER CLEANER FOR ANY SURFACE – With some of the newest advancements in Nano Technology, our newly formulated multisource cleaner was designed to effectively lift away dirt, grime, tar, and fight the toughest grease at the molecular level. The formula can be utilized in an Adam’s Foam Cannon & Multi & Foaming Pump Sprayers for superior foaming action!
• ✅ MULTI-PURPOSE CLEANER - Adam’s All-Purpose Cleaner is the only chemical you’ll need for Cleaning engine bays removing bug & tar, fender wells, tires, brake dust, wheels, exhausts tips, polishing pads and applicators, cutting grease, cleaning oxidized plastic and rubber and cleansing delicate surfaces when diluted up to 90%. Pair with your favorite brush or microfiber cleaning cloth to clean your car, truck, boat, RV & motorcycle.
• ✅ DILUTE UP TO 90% FOR SOME APPLICATIONS - When diluted, it is gentle enough to clean body panels, interior components, carpet & upholstery, interior car accessories, truck accessories, and even leather. If you have a surface that you need to decontaminate and are not sure which product to grab, our APC will be the most reliable product in your line of car cleaning supplies!
• ✅ 110% SATISFACTION GUARANTEE AND USA MADE - We pride ourselves on customer service and satisfaction and believe that this is THE BEST All Purpose Cleaner or Heavy Degreaser on the market! If you don’t agree, we’ll do everything we can to make it right!

Adam's Polishes

• Cleans away dirt, grime, and stains from any surface
• Advanced cleaning formula works on virtually any surface both interior and exterior
• All-natural citrus based formula is designed to remove dirt, grime, stains, and filth faster than ever imagined
• Concentrated and dilutable
• Works on everything from carpets to engine bays

Chemical Guys

• Cut through grease, grime, oil
• Scrubby texture
• Heavy duty formula
• Clean and restore under-the-hood parts, plastics, vinyl, and metal
• Convenient, disposable wipe in a citrus scent

STP

• No scrubbing
• Safe on all engine components
• It safely removes grease, dirt, and grime from most engines
• This item is not for sale in Catalina Island

Gunk

• Powerful grease remover and grime fighter in a biodegradable bio-solvent formula with durable, shatter-resistance trigger and convenient refill port; no funnel needed and no-mess
• Safe to use on multiple surfaces. Unlike other degreasers, this formula will prevent glass from etching and aluminum, copper, and metal from corroding and flash rust
• Non-flammable, non-corrosive, non-abrasive, low-odor formula that can be used in food-processing facilities
• Biodegradable formula meets U.S. EPA Safer Choice Standards and is 50-state VOC compliant. NSF Registered A1, A2, A4, A8, B1
• Excellent for cleaning greasy automotive parts, tools, shop floors, industrial machinery, commercial appliances, and equipment

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