Guaranteed permanent repair of hydraulic leak points. Restores rubber seals to like new condition.

Maximum cleaning and protection, treats up to 16 gallons.

A rear main seal keeps your vehicles oil inside of the rear of the engine. When there is a leak in this region it can be an expensive fix because it involves removing the transmission. However BlueDevil Rear Main Sealer permanently stops rear main seal leaks. Just add to the engine oil to restore and seal gaskets. BlueDevil Rear Main Sealer is a great repair for timing cover leaks.

Permanent repair for radiator and block leaks. Contains no solid or fibrous materials.

Need a transmission seal you can count on? BlueDevil Transmission Sealer permanently seals fluid leaks in your transmission - guaranteed. It restores gaskets and seals transmission leaks fast.

A leaking head gasket is bad news for your car and can be costly if it is not taken care of right away. The 16 oz. BlueDevil Pour-N-Go BlueDevil Head Gasket Sealer is formulated for the Do-it-Yourself that has limited time or is not mechanically inclined but searching for a permanent repair. The ease of use along with the savings in cost makes BlueDevil coolant leak sealer an excellent option. Our head gasket sealer can put a stop to a coolant leak by sealing the head gasket and saving you a trip to the mechanic for an expensive fix.

If your car has an oil leak you should seek a solution immediately before the repairs get costly. Not only do oil leaks leave behind puddles of oil stains but they also pose a hazard to the environment. BlueDevil Oil Stop Leak seals engine oil leaks permanently. It is non-clogging and will not harm your engine. BlueDevil is safe and easy to use and is compatible in gasoline or diesel engines. Our stop leak additive solution is guaranteed to keep your leak sealed even after miles of driving or your money back.

BlueDevil Coolant Stop Leak is an easy to use do it yourself formula that will seal leaks throughout your vehicles cooling system stopping that antifreeze loss and keep your vehicle in safe operating condition. BlueDevil Coolant Stop Leak is compatible in gasoline and diesel engines. Its safe for Northstar engines and guaranteed to help seal any leaks in and around your cooling system. It contains no solid or particulate matter and will not clog or harm your engine. It bonds to various materials such as metal aluminum cast alloy - plastic.