Top 10 Water Pump Sealant – Gasket Sealers

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1. Permatex

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Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 Ounce, 0.5 oz.

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Permatex #ad - Highest water-glycol resistance available in an RTV silicone. Sensor-safe, noncorrosive RTV silicone gasket material formulated specifically for water pumps and thermostat housings. Temperature range: -65°f to 500°f -54°C to 260°C intermittent. Superior adhesion and flexibility; can be used as a gasket maker or dressing. Suggested applications: Water pump and thermostat housings.
BrandPermatex #ad
ManufacturerPermatex #ad
Height6.5 Inches
Length0.63 Inches
Weight0.05 Pounds
Width2.81 Inches
Part Number22071
Model22071

2. K-Seal

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Pour and Go, Trade Trusted-Stop Leak, K-SEAL Coolant Leak Repair, Multi-Purpose Formula Stops Leaks in the Radiator, Block, ST5501 8oz, Head Gasket, Heater Core, Water Pump Casing, and Freeze Plug

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K-Seal #ad - Repairs in minutes: formulated to permanently weld radiators, including hard plastic aluminum heads and blocks in old and new cars. Us bestseller. The only car radiator and gasket sealant university tested to meet ASTM D3147. Over 8 million bottles sold worldwide! Check the technical Specification section of this page for extra instructions for a successful repair.

Scientifically tested: safe and effective, our cracked block repair can seal 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. Save time/money. Seals cracks and stops leaks: a diy alternative to costly repairs, freeze plug, our coolant leak fix permanently seals cracks and holes! It quickly repairs your leaking radiator, heater core and water pump casing with no adverse impact on efficiency.

Customer support: if k-seal engine coolant leak stop doesn’t seal, the system might be over-pressurized. Pour and go: our cooling system sealer is easy to use: just shake the bottle, it mixes with all types of antifreeze, add to your radiator/overflow and run the engine! Unlike some traditional products, absolutely no draining or flushing required.
BrandK-Seal #ad
ManufacturerK-Seal #ad
Height6 Inches
Length7.87 Inches
Weight0.6 Pounds
Width2 Inches
Part NumberST5501
ModelST5501
WarrantyWhen K-Seal makes a repair we guarantee it will be permanent

3. Permatex

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Permatex 80022 Sensor-Safe Blue RTV Silicone Gasket Maker, 3 oz. Tube

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Permatex #ad - Effectively replaces almost any cut gasket. Makes reliable 'formed-in-place' gaskets that resist cracking, shrinking and migrating. Coats pre-cut gaskets to increase reliability without fouling oxygen sensors. Suggested applications: Valve covers, water pumps, oil pans, timing covers, thermostat housings, transmission pans. Temperature range of -65 degrees fahrenheit to 500 degrees fahrenheit intermittent.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.25 Inches
Weight0.1 Pounds
Width3.81 Inches
Part Number80022
Model80022
Warranty1-Years for defects in material and/or workmanship

4. Permatex

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3.5 oz., Permatex 82194 Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker

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Permatex #ad - Low odor and non-corrosive formula. Designed specially for high-torque and high vibration applications. Maximum vibration resistance, with outstanding resistance to oils, cooling and shop fluids. Suggested applications: valve covers, intake manifold end seals, timing covers, water pumps, oil pans, thermostat housings. Oem specified, guaranteed not to leak.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.25 Inches
Weight0.26 Pounds
Width3.81 Inches
Part Number82194
Model82194
WarrantyManufacturer

5. J-B Weld

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J-B Weld 32507 Water Pump and Thermostat Housing RTV Silicone Gasket Maker and Sealant, .5 oz.

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J-B Weld #ad - Water pump & thermostat housing gasket maker and sealant: Is a specially designed RTV Room Temperature Vulcanized Silicone gasketing material for use in mechanical assemblies. What the professionals use: builders, mechanics & repair pros know our products bond strong to a variety of surfaces in even the toughest environments.

Easy to use: curing occurs with exposure to moisture in the air, waterproof, forming a tough, petroleum and weather resistant gasket and seal on most surfaces. Dependable & versatile: perfect for use on automotive applications such as oil pans, timing gear covers, valve covers, transmission pans, and water pumps & thermostats.

Jb weld delivers the legendary performance of the World's Strongest Bond. This product is grey in color and sensor safe. Do it yourself: big or small, you can diy it with j-b. Our heavy duty adhesives repair & restore it right the first time. Choose the product pros trust for your project.
BrandJ-B Weld #ad
ManufacturerJBWeld #ad
Height1 Inches
Length6.5 Inches
Weight0.05 Pounds
Width3 Inches
Part Number32507
Model32507
Warrantyno warranty

6. ACDelco

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ACDelco 252-544 Professional Water Pump Kit

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ACDelco #ad - All makes water pumps fit GM vehicles as well as a wide range of non-GM vehicles. Thoroughly tested for reliable, leak-free performance. High-quality bearings are permanently sealed and lubricated for greater durability and long life. Heat-treated shaft assemblies provide superior strength and durability over non-treated assemblies. Coated seals support seal longevity and durability.
BrandACDelco #ad
ManufacturerACDelco #ad
Height7.5 Inches
Length11.4 Inches
Weight3.2 Pounds
Width8.1 Inches
Part Number252-544
Model252-544
Warranty24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details.

7. Prestone

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Prestone AS145 Radiator Sealer Stop Leak, 11 oz.

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Prestone #ad - Combination of natural and synthetic components provides the ability to seal leaks up to 0020" x 05". Patented formula quickly stops leaks in radiators, water pumps, and heater cores. Boosts corrosion inhibitors to protect against pitting and corrosion, which cause radiator leaks. Stops the leak as well as the corrosive condition that causes it. Seals even large leaks without interfering with the flow through the radiator or heater core.
BrandPrestone #ad
ManufacturerPrestone #ad
Height5.64 Inches
Length1.91 Inches
Weight0.82 Pounds
Width3.04 Inches
Part NumberAS145
ModelAS145

8. GMB

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GMB 120-3041P High Performance Series Water Pump with Gasket

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GMB #ad - Precision-ground shaft and hub accept OE fan clutches perfectly. Bearing noise and durability tested. Designed to match OE coolant flow rate and pressure. All required hardware included for easy installation. 100% factory tested for leakage and dimensional precision.
BrandGMB #ad
ManufacturerGMB #ad
Height7.5 Inches
Length11.8 Inches
Weight6.8 Pounds
Width7.8 Inches
Part Number120-3041P
Model120-3041P

9. GMB

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GMB 130-5130 OE Replacement Water Pump with Gasket

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GMB #ad - 100% factory tested for leakage and dimensional precision. Unique no-sealant required, gasket makes installation fast, easy and leak-free. All required hardware included for easy installation. Factory sealed, precision ground, one piece bearing assembly. High-flow design for long-lasting, efficient cooling. Bearing noise and durability tested. Precision-ground shaft and hub accept OE fan clutches perfectly. Designed to match OE coolant flow rate and pressure. Designed for OE fit and performance. Precision-ground shaft and hub accept OE fan clutches perfectly.
BrandGMB #ad
ManufacturerGMB #ad
Height5.2 Inches
Length5.5 Inches
Weight2 Pounds
Width4.5 Inches
Part Number130-5130
Model130-5130

10. ACDelco

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ACDelco 252-813 Professional Water Pump Kit

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ACDelco #ad - All makes water pumps fit GM vehicles as well as a wide range of non GM vehicles. Thoroughly tested for reliable, leak free performance. Impeller made of metal. Heat treated shaft assemblies provide superior strength and durability over non treated assemblies. High quality bearings are permanently sealed and lubricated for greater durability and long life. Coated seals support seal longevity and durability.
BrandACDelco #ad
ManufacturerACDelco #ad
Height6.1 Inches
Length6.4 Inches
Weight3.2 Pounds
Width5.1 Inches
Part Number252-813
Model252-813
Warranty24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details.