Top 10 Head Gasket Sealers
for June 2021

Recommendations are independently chosen by MOOZ’s editors. Purchases you make through our links may earn us a commission.

1
9.6
SCORE
Steel Seal Blown Head Gasket Fix Repair Sealer - 8 Cylinder

Steel Seal Blown Head Gasket Fix Repair Sealer

8 Cylinder

by Steel Seal
What We like

Used for 8 Cylinder Engines

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Product Features

  • Do-It-Yourself Pour in Head Gasket Fix
  • Used by thousands of repair shops nationwide
  • Permanently seals a crack in the head gasket

Permanently seals a crack in the head gasket Do-it-yourself pour in head gasket fix Used by thousands of repair shops nationwide

2
9.6
SCORE
BlueDevil Head Gasket Sealer (38386)

BlueDevil Products BlueDevil Head Gasket Sealer (38386)

by BlueDevil Products
What We like

Safe and easy to use

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Product Features

  • Contains no solid or particulate matter that can harm a vehicles engine
  • Good for Head Gaskets, Warped or Cracked Heads, Heater Cores, and Freeze Plugs
  • Permanent Repair
  • Alternative solution for costly and time consuming repairs

Contains no solid or particulate matter that can harm a vehicles engine Alternative solution for costly and time consuming repairs Permanent repair Good for head gaskets, warped or cracked heads, heater cores, and freeze plugs

3
9.3
SCORE
Steel Seal Blown Head Gasket Fix Repair Sealer - 6 Cylinder

Steel Seal Blown Head Gasket Fix Repair Sealer

6 Cylinder

by Steel Seal
What We like

Used for 6 Cylinder Engines

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Product Features

  • Do-It-Yourself Pour in Head Gasket Fix
  • Permanently seals a crack in the head gasket
  • Used by thousands of repair shops nationwide

Do-it-yourself pour in head gasket fix Used by thousands of repair shops nationwide Permanently seals a crack in the head gasket

4
9
SCORE
BlueDevil Pour-N-Go Head Gasket Sealer

BlueDevil Products BlueDevil Pour-N-Go Head Gasket Sealer

by BlueDevil Products
What We like

Easy to Use Pour-n-go

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Product Features

  • Do-It-Yourself Formula
  • Permanently Seals Blown, Cracked or Leaking Head Gaskets
  • Used for 4 cylinder and v-6 engines

Permanently seals blown, cracked or leaking head gaskets Do-it-yourself formula Used for 4 cylinder and v-6 engines

5
8.8
SCORE
BlueDevil 32oz Head Gasket Sealer w/Radiator Flush

BlueDevil 32oz Head Gasket Sealer w/Radiator Flush

by BlueDevil Products
What We like

Includes 32oz Head Gasket sealer and 32 oz Flush

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Product Features

  • Permanently Seals Blown Head Gaskets
  • Permanently Seals Leaking Heater Cores
  • Permanently Seals Leaking Radiators
  • Permanently Seals Warped & Cracked Heads

Permanently seals blown head gaskets Permanently seals warped & cracked heads Permanently seals leaking heater cores Permanently seals leaking radiators

6
8.7
SCORE
Head Gasket Sealer for 4 Cylinder Engines - Steel Seal

STEEL SEAL Head Gasket Sealer for 4 Cylinder Engines

Steel Seal

by Steel Seal
What We like

Used for all 4 cylinder engines

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Product Features

  • Do-It-Yourself pour in head gasket fix
  • Permanently seals head gasket leaks
  • Award winning, triple-patented formula

Do-it-yourself pour in head gasket fix Award winning, triple-patented formula Permanently seals head gasket leaks

7
8.6
SCORE
K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz

K&W 401224 FiberLock Head Gasket & Block Repair

32 Fl Oz

by CRC
What We like

Easy Pour and Go Formula!

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Product Features

  • "Contains 3 unique technologies. Military-Strength Fibers create multi-layer repair over cracks with a web-like weave. Nanotechnology permanently fixes the smallest cracks and crevices. Cool-X Conditioner lowers operating temperature as it circulates through cooling system."
  • Permanently fixes head gaskets, engine blocks, cooling systems, and cylinder heads.
  • Works with all antifreeze or plain water.
  • Seals larger holes with less fluid loss than competitive products as proven by lab test (ASTM D6107)

"contains 3 unique technologies. military-strength fibers create multi-layer repair over cracks with a web-like weave. nanotechnology permanently fixes the smallest cracks and crevices. cool-x conditioner lowers operating temperature as it circulates through cooling system." Works with all antifreeze or plain water. Seals larger holes with less fluid loss than competitive products as proven by lab test (astm d6107) Permanently fixes head gaskets, engine blocks, cooling systems, and cylinder heads.

8
8.6
SCORE
K&W 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 Fl Oz

K&W 401232 Permanent Head Gasket & Block Repair with Nanotechnology

32 Fl Oz

by CRC
What We like

Product Type: AUTO ACCESSORY

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Product Features

  • Package length: 4.394 cm
  • Package height: 24.206 cm
  • Package width: 8.610 cm

Package width: 8.610 cm Package height: 24.206 cm Package length: 4.394 cm

9
8.6
SCORE
Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair

Bar's Leaks Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair

by Bar's Leaks
What We like

Fixes leaking freeze and core plugs

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Product Features

  • Repairs blown head and intake gasket leaks
  • Seals cracked cylinder heads and blocks
  • Stops heater core and radiator leaks

Seals cracked cylinder heads and blocks Repairs blown head and intake gasket leaks Stops heater core and radiator leaks

10
7.7
SCORE
Blue Devil (00209-6PK) Pour-N-Go Head Gasket Sealer - 16 Ounce, (Pack of 6)

Blue Devil (00209-6PK) Pour-N-Go Head Gasket Sealer

16 Ounce, (Pack of 6)

by Blue Devil
What We like

Package Dimensions: 15.24 L X 20.828 H X 21.59 W (Centimeters)

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Product Features

  • Package Weight: 4.195 Kilograms
  • Permanent Repair For Head Gaskets, Heater Cores, Freeze Plugs, And Cooling System Leaks
  • Contains No Solid Or Particulate Matter That Can Harm A Vehicles Engine

Permanent repair for head gaskets, heater cores, freeze plugs, and cooling system leaks Package weight: 4.195 kilograms Contains no solid or particulate matter that can harm a vehicles engine

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