10 Best Head Gasket Sealers

Product Highlights

arrow_forwardStops block leaks

arrow_forwardSeals cracked cylinder heads and blocks

arrow_forwardRepairs blown head gaskets

arrow_forwardContains a combination of antifreeze compatible sodium silicate sealing liquid and various size gasket sealing particles which penetrate gaps & cracks and harden to permanently stop leaks.

Product Highlights

arrow_forwardRepairs blown head and intake gasket leaks

arrow_forwardSeals cracked cylinder heads and blocks

arrow_forwardStops heater core and radiator leaks

arrow_forwardFixes leaking freeze and core plugs

Product Highlights

arrow_forwardRepairs blown head and intake gasket leaks

arrow_forwardSeals cracked cylinder heads and blocks

arrow_forwardStops heater core and radiator leaks

arrow_forwardFixes leaking freeze and core plugs

Product Highlights

arrow_forwardREPAIRS IN MINUTES: Permanently fix blown head gaskets, cracked heads and cracked/porous blocks including aluminum heads in old and new cars. The only head gasket and block sealant that is 3rd party tested to meet ASTM D3147. Save time/money

arrow_forwardSEALS CRACKS AND STOPS LEAKS: A DIY alternative to costly repairs, our head gasket fix permanently seals cracks and holes! Quickly repair your blocks, leaking radiator, freeze plug, heater core and water pump casing with no adverse impact on efficiency.

arrow_forwardPOUR AND GO: Our head gasket sealer is easy to use just shake, add to your radiator/overflow and run the engine! Unlike some competitive products, it mixes with all types of antifreeze, absolutely no draining, flushing or pulling the thermostat required.

arrow_forwardSCIENTIFICALLY TESTED: Safe, effective, our head gasket and block repair seals leaks up to 1/32 of an inch! Once cured, the repair withstands the high pressure of the combustion chamber, all without failing or clogging the cooling system. US Bestseller

arrow_forwardCUSTOMER SUPPORT: If our head gasket repair leak doesn’t seal your intake gasket, the system might be over-pressurized. Check the Technical Specification section of this page for extra instructions for a successful repair. Over 8 million bottles sold.

Product Highlights

arrow_forwardPermanently seals a crack in the head gasket

arrow_forwardDo-It-Yourself Pour in Head Gasket Fix

arrow_forwardUsed by thousands of repair shops nationwide

arrow_forwardBacked with a 100% Money-Back Guarantee

arrow_forwardUsed for 6 Cylinder Engines

Product Highlights

arrow_forwardREPAIRS IN MINUTES: Create a permanent weld within the entire coolant system, including on hard plastic radiators and aluminum heads and blocks in larger capacity engines, AG, RV etc. The only industrial coolant sealant university tested to meet ASTM D3147.

arrow_forwardSEALS CRACKS AND STOPS LEAKS: Avoid expensive downtime, our coolant stop leak will permanently seal cracks and holes! Quickly repair your head gasket, block, leaking radiator, freeze plug, heater core & water pump casing with no adverse impact on efficiency.

arrow_forwardPOUR AND GO: Our cooling system sealer is easy to use just shake the bottle, add to your radiator/overflow and run the engine! Unlike some competitive products, it mixes with all types of antifreeze, no draining, flushing or pulling the thermostat required.

arrow_forwardSCIENTIFICALLY TESTED: Safe and effective, our Heavy Duty Coolant stop leak repair seals leaks up to 1/32 of an inch! Once cured, it withstands the high pressure of the combustion chamber, without failing or clogging the cooling system. US Bestseller

arrow_forwardCUSTOMER SUPPORT: If our engine coolant leak doesn’t seal your head gasket, the system might be over-pressurized. Check the Technical Specification section of this page for extra instructions for a successful repair. Over 8 million bottles sold. Save time/money

Product Highlights

arrow_forwardProfessional strength fast acting resealer, stops leaks fast

arrow_forwardRejuivinates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems

arrow_forwardCompatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil

arrow_forwardDoes not contain petroleum distillates, will not over-swell or breakdown seals

arrow_forward8oz bottle will treat a 6 quart capacity, adjust accordingly

Product Highlights

arrow_forwardDo-It-Yourself Formula

arrow_forwardEasy to Use Pour-n-go

arrow_forwardUsed for 4 cylinder and v-6 engines

arrow_forwardPermanently Seals Blown, Cracked or Leaking Head Gaskets