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10 best

Engine Block Sealer

of October 2024

112M consumers helped this year.

1

K&W Permanent Metallic Block Seal Head Gasket Repair, 16 Wt Oz

K&W Permanent Metallic Block Seal Head Gasket Repair, 16 Wt Oz

K&W Permanent Metallic Block Seal Head Gasket Repair, 16 Wt Oz

CRC

9.8

Buy it on Amazon

10% off

2

Bar's Leaks OS-1 Seal (Engine Oil Burning/Leak Repair), 16.9 Fluidounces

Bar's Leaks OS-1 Seal (Engine Oil Burning/Leak Repair), 16.9 Fluidounces

Bar's Leaks OS-1 Seal (Engine Oil Burning/Leak Repair), 16.9 Fluidounces

Bar's Leaks

9.6

Buy it on Amazon

6% off

3

Moroso 35500 Ceramic Engine Seal - 1 Pint

Moroso 35500 Ceramic Engine Seal - 1 Pint

Moroso 35500 Ceramic Engine Seal - 1 Pint

Moroso

9.1

Buy it on Amazon

4

ABRO Super Seal, 11.4 oz., Permanently Seals Cracks & Holes, Copper Infused Liquid Glass Sealer, Withstands Extreme Conditions, Ideal for Engine Blocks, Radiators, Head Gaskets, & Freeze Plugs

ABRO Super Seal, 11.4 oz., Permanently Seals Cracks & Holes, Copper Infused Liquid Glass Sealer, Withstands Extreme Conditions, Ideal for Engine Blocks, Radiators, Head Gaskets, & Freeze Plugs

ABRO Super Seal, 11.4 oz., Permanently Seals Cracks & Holes, Copper Infused Liquid Glass Sealer, Withstands Extreme Conditions, Ideal for Engine Blocks, Radiators, Head Gaskets, & Freeze Plugs

ABRO

8.9

Buy it on Amazon

5

Bar's Leaks 1000 Engine Repair - 16 oz.

Bar's Leaks 1000 Engine Repair - 16 oz.

Bar's Leaks 1000 Engine Repair - 16 oz.

Bar's Leaks

8.5

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Related products

Up to 7% off

Bar's Leaks 1040 Grey Rear Main Seal Repair Concentrate - 16.9 oz.

Bar's Leaks 1040 Grey Rear Main Seal Repair Concentrate - 16.9 oz.

6

Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.

Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.

Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.

Bar's Leaks

8.2

Buy it on Amazon

7

CRC 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 fl. oz.

CRC 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 fl. oz.

CRC 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 fl. oz.

CRC

8.0

Buy it on Amazon

8% off

8

K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, Freeze Plug - Pour and Go - Designed for Canadian Market

K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, Freeze Plug - Pour and Go - Designed for Canadian Market

K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, Freeze Plug - Pour and Go - Designed for Canadian Market

K-Seal

7.8

Buy it on Amazon

7% off

9

K-Seal ST3501 Pour and Go Permanent Head Gasket and Block Repair

K-Seal ST3501 Pour and Go Permanent Head Gasket and Block Repair

K-Seal ST3501 Pour and Go Permanent Head Gasket and Block Repair

K-Seal

7.3

Buy it on Amazon

10

Irontite All Weather Seal, Blue, 16 oz (468-9130-16)

Irontite All Weather Seal, Blue, 16 oz (468-9130-16)

Irontite All Weather Seal, Blue, 16 oz (468-9130-16)

Irontite

7.1

Buy it on Amazon

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