Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Availability
Stop Leak Additives
Showing In Stock Items. Show All 10 Items.
Moroso Ceramic Engine Seal
Stop cooling leaks with the best chemical sealer you can buy. Moroso Ceramic Engine Seal works equally well in aluminum or cast iron blocks. For best results thoroughly clean the cooling system before use. It is not compatible with antifreeze.
( 14 )
$28.99
ATP Re-Seal Additive
AT-205 Re-Seal additive from ATP stops seal leaks in your engine, transmission, differential, and hydraulic systems (except for the brakes). Petroleum distillate rubber conditioners can temporarily soften rubber seals and then turn them to mush over time, thus causing leaks. It's best to avoid those petroleum products and use ATP AT-205 Re-Seal additive instead. It's easy to use and works fast! Try it today and see for yourself.
( 134 )
$21.99
Chevrolet Performance Coolant System Seal Tablets
Chevrolet Performance coolant system seal tablets are organically formulated and designed for use in radiator systems to seal or prevent leaks due to casting porosity in engine components. Coolant system seal tablet details: * Non-toxic * DEX-COOL compatible * Engine application is based on liters of volume in cooling system * Formulated for automotive use
( 2 )
$2.99
Moroso All Weather Seal
Moroso's All Weather Seal is specially formulated to stop cooling system leaks when antifreeze is present. All Weather Seal is ideal for stopping radiator leaks and sealing cracked blocks in sub-freezing conditions. For best results thoroughly clean and flush cooling system before use.
( 14 )
$29.99
Lucas Power Steering Stop Leak
Lucas power steering stop leak is designed to reduce slack, squeals, and hard spots in worn rack and pinions. It will stop any seal leaks in your power steering system and can solve many small problems.
( 8 )
$12.99
—
$164.99
Liqui Moly Radiator Stop Leak
Liqui Moly Radiator Stop Leak will immediately seal small leaks caused by external damage, porous solder joints, and hairline cracks in cooling systems of all water-cooled engines. It does not react with oxygen or heat and will never prevent system flow or cause overheating. Liqui Moly Radiator Stop Leak is safe to use with aluminum and plastic radiators, and will work as long as it's in the coolant.
( 2 )
$10.99
FJC R-134a Stop Leak Sealant with Detection Dye
FJC R-134a Stop Leak Sealant with detection dye seals leaks in O-rings and gaskets. Containing red leak detection dye, no UV light is needed to view dye and Stop Leak will not harm your vehicle's A/C system or refrigerant recovery or charging equipment. FJC R-134a Stop Leak with visual red dye and O-ring conditioners features a self-sealing top and will require self-sealing dispensing equipment.
Not Yet Reviewed
$6.99
Johnsen's Freeze R-134A Leak Stop Treatment
If you're looking for a simpler way to detect and seal the most common air conditioning leaks in R-134a systems, Johnsen's has the solution with their R-134a Leak Stop treatment! Specially formulated, it contains a mixture of PAG lubricating substance, seal additive, and red dye with leak detector, and works great on factory installed and/or retro-fitted R-134a auto A/C systems.
( 1 )
$5.99
FJC Kwik Seal Air Conditioning Sealant
FJC Kwik Seal air conditioning sealant with conditioners offers an advance formula that stops leaks where others fail in condensers, evaporators, and hoses. For use is R134a and R12 mobile A/C systems, Kwik Seal creates a permanent seal in metal and rubber components, and will not damage A/C recovery/recycle equipment. Stop leaks and improve performance with FJC Kwik Seal sealant.
Not Yet Reviewed
$25.99
FJC Kwik Seal Stop Leak Air Conditioning Sealant
FJC Kwik Seal Stop Leak air conditioning sealant with conditioners offers an advanced formula that stops leaks where others fail in condensers, evaporators, and hoses. For use is R134a mobile A/C systems, FJC Kwik Seal Stop Leak creates a permanent seal in metal and rubber components, and will not damage A/C recovery/recycle equipment. Each can includes an easy-to-use hose with 134a coupler for dispensing—no other tools are necessary.
Not Yet Reviewed
$24.99
