Best Head Gasket Repair Sealer 2020 – Top 10 Reviewed!

SaleBestseller No. 1
Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair
636 Total Customer Reviews
Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair
  • Repairs blown head and intake gasket leaks
  • Seals cracked cylinder heads and blocks
  • Stops heater core and radiator leaks
  • Fixes leaking freeze and core plugs
Bestseller No. 2
BlueDevil Head Gasket Sealer (38386)
551 Total Customer Reviews
BlueDevil Head Gasket Sealer (38386)
  • Contains no solid or particulate matter that can harm a vehicles engine 
  • Alternative solution for costly and time consuming repairs 
  • Safe and easy to use
  • Permanent Repair
Bestseller No. 3
Steel Seal Blown Head Gasket Fix Repair Sealer - 8 Cylinder
73 Total Customer Reviews
Steel Seal Blown Head Gasket Fix Repair Sealer - 8 Cylinder
  • Permanently seals a crack in the head gasket
  • Do-It-Yourself Pour in Head Gasket Fix
  • Used by thousands of repair shops nationwide
  • Backed with a 100% Money-Back Guarantee
Bestseller No. 4
K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz
242 Total Customer Reviews
K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz
  • Easy Pour and Go Formula!
  • Permanently fixes head gaskets, engine blocks, cooling systems, and cylinder heads.
  • "Contains 3 unique technologies. Military-Strength Fibers create multi-layer repair over cracks with a web-like weave. Nanotechnology permanently fixes the...
  • Seals larger holes with less fluid loss than competitive products as proven by lab test (ASTM D6107)
Bestseller No. 5
Steel Seal Blown Head Gasket Fix Repair Sealer - 6 Cylinder
73 Total Customer Reviews
Steel Seal Blown Head Gasket Fix Repair Sealer - 6 Cylinder
  • Permanently seals a crack in the head gasket
  • Do-It-Yourself Pour in Head Gasket Fix
  • Used by thousands of repair shops nationwide
  • Backed with a 100% Money-Back Guarantee
SaleBestseller No. 6
Bar's Leaks 1111 Block Seal Permanent Head Gasket Fix 24 oz.
414 Total Customer Reviews
Bar's Leaks 1111 Block Seal Permanent Head Gasket Fix 24 oz.
  • Stops block leaks
  • Seals cracked cylinder heads and blocks
  • Repairs blown head gaskets
  • Contains a combination of antifreeze compatible sodium silicate sealing liquid and various size gasket sealing particles which penetrate gaps & cracks and...
Bestseller No. 7
K-SEAL Ultimate Permanent Head Gasket Repair ST3501 16oz Multi-Purpose Formula Stop Leaks in the...
85 Total Customer Reviews
K-SEAL Ultimate Permanent Head Gasket Repair ST3501 16oz Multi-Purpose Formula Stop Leaks in the...
  • REPAIRS IN MINUTES: Permanently fix blown head gaskets, cracked heads and cracked/porous blocks including aluminum heads in old and new cars. The only head...
  • SEALS CRACKS AND STOPS LEAKS: A DIY alternative to costly repairs, our head gasket fix permanently seals cracks and holes! Quickly repair your blocks, leaking...
  • POUR 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...
  • SCIENTIFICALLY 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...
SaleBestseller No. 8
K&W 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 Fl Oz
98 Total Customer Reviews
K&W 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 Fl Oz
  • Auto & Truck Maintenance
  • Country of manufacture: United States
  • Manufacturer: K&W
Bestseller No. 9
BlueDevil Pour-N-Go Head Gasket Sealer
283 Total Customer Reviews
BlueDevil Pour-N-Go Head Gasket Sealer
  • Do-It-Yourself Formula
  • Easy to Use Pour-n-go
  • Used for 4 cylinder and v-6 engines
  • Permanently Seals Blown, Cracked or Leaking Head Gaskets
Bestseller No. 10
Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube
1,377 Total Customer Reviews
Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube
  • Sensor-safe, non-corrosive formula designed for superior adhesion to oily surfaces and long term durability
  • Superior resistance to powertrain fluids including engine oil, transmission fluid, gear lube and coolants
  • Retains high flexibility and eliminates the need for pre-formed, pre-cut, paper, rubber or cork gaskets; OEM specified and approved for dealership warranty...
  • Temperature Range -65°F to 500°F (-54°C to 260°C) intermittent

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