Updated: 17 Feb 2025

radiator cap seals

Updated: 17 Feb 2025

#1

Best Choice
Chrome Round Radiator Pressure Cap 15 lbs, 15 PSI, Universal Fit with 1-1/2" Interior Seal & 2-3/8" Exterior O.D., Durable Chrome Finish, Standard Neck Compatible

9.8

Speedway Motors

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Main highlights

Universal Compatibility: Designed to fit most standard radiator necks, with a 1-1/2" O.D. interior sealing surface for a snug and secure fit.

Pressure Regulation: Ensures optimal performance with a 15 psi pressure rating, suitable for most vehicle cooling systems.

Premium Finish: Features a sleek chrome finish, adding a touch of style under the hood while offering corrosion resistance.
#2

Value for Money
Engine Coolant Filler Neck with Sealed Cap Upper Radiator Filler Neck Water Pipe - Compatible for Nissan Quest 2011-2017 for Nissan Murano 2009-2014 - Replace Part 21517JP00A 214308991A

9.6

YOLLKY

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Main highlights

[REPLACE PART NO.] 21517JP00A 214308991A. Prior to buying, please verify the make, model, and year of your vehicle.

Vehicle Fitment - Compatible for Nissan Quest LE, S, SL, SV 3.5L V6 2011-2014, for Nissan Quest Platinum, S, SL, SV 3.5L V6 2015-2017; for Nissan Murano LE, S, SL 3.5L V6 2009 2010, for Nissan Murano CrossCabriolet, LE, S, SL, SV 3.5L V6 2011-2014.

Function - Radiator Coolant Filler Neck is made of high quality plastic & metal material, manufactured according to production standards, durable, high hardness, not easy to deform, direct OE replacements that offer perfect fit, ensure your vehicle performs with optimum levels of safety.
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#3
ACDelco GM Original Equipment RC85 15 P.S.I. Radiator Cap

9.3

ACDelco

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Main highlights

Seal and maintain pressure on the cooling system for vehicle safety

Raise the boiling point of the engine coolant to maintain efficiency

Fit most models of gm vehicles for expanded coverage
#4
Flygun Pack-1 Car Radiator Cap, Seal Cover with Temperature Gauge, 1.8 Bar Radiator Cover Assembly, Automotive Fuel Tank Cap, Universal for Most Racing Cars, Off-road Vehicles (Black)

9.2

Flygun

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Main highlights

Structural Design: The radiator cover adopts a double lug design, which fits firmly and provides contact points for holding, making it more convenient to use. It shows you accurate tank temperature readings and easily monitors and measures the temperature of your machine, while helping you determine if it's safe to open the radiator cap.

High Hardness Shell: The radiator cover is made of silicone and aluminum alloy materials, providing you with solid, rust-proof, and durable quality assurance. This radiator cap is not prone to fading or cracking and is corrosion-resistant, making it suitable for use in wet, dry, hot and dusty climates, making tough off-road trips easy and convenient.

Functional Features: The water tank cover with a meter can not only prevent the water tank from leaking, but also adjust the pressure balance and water level balance of the water tank. As the water temperature rises, once it exceeds the pressure relief value, the water tank cover spring will open, and the cooling water will flow to the water tank auxiliary kettle for storage. Instead, the water in the auxiliary kettle will be sucked back into the water tank.
#5
ACDelco GM Original Equipment RC27 15 P.S.I. Radiator Cap

8.9

ACDelco

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Main highlights

Seal and pressurize your vehicle’s cooling system as the radiator transfers heat from the engine’s coolant to the outside air

Professional, premium aftermarket replacement radiator cap

Fit most models of gm vehicles on the road today for more coverage
#6
dawfall Pack-1 Car Fuel Tank Cap, Temperature-measuring Water Tank Cap, Excellent Sealing Dustproof High-pressure Radiator Cap, Universal for Cars Off-road Vehicle Modification Accessory (Black)

8.7

dawfall

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Main highlights

Thermometer Design: This fuel tank cap can provide you with real-time temperature monitoring. The reading gradient meter is clearly visible and has high visibility. A closed tank allows the cooling system to maintain a more efficient temperature under pressure. Helps solve recurring boiling problems on most cars and off-road vehicles.

Premium Quality: The body of this radiator cover is made of alloy, making it sturdy and durable enough to withstand the most difficult off-road journeys. Excellent silicone sealing design, can be used in humid, hot and dusty harsh weather to maintain stable operation.

Function: This fuel tank cap can not only avoid water tank leakage, but its greater function is to adjust the pressure balance of the water tank, maintain the water level balance of the water tank, avoid overheating of the engine, and extend its service life.
#7
Engine Radiator Filler Neck with Sealed Cap Upper Radiator Coolant Filler Neck Water Pipe - Compatible for Mazda 5 2.3L L4 2006-2010 - Replace Part LFB7-15-17YA

8.4

YOLLKY

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Main highlights

[REPLACE PART NO.] LFB7-15-17YA. Prior to buying, please verify the make, model, and year of your vehicle.

Vehicle Fitment - Compatible for Mazda 5 Sport, Touring 2.3L L4 2006, for Mazda 5 Grand Touring, Sport, Touring 2.3L L4 2007-2010.

Function - The role of the thermostat is to regulates the flow of the coolant going through the radiator to keep the engine stay in stable operating temperature levels. This coolant filler neck is designed to match the function and form of the original one, exactly OEM design to replace your old worn parts, it can withstand extreme temperature changes, durable, high hardness, not easy to deform, ensure your vehicle performs with optimum levels of safety.
#8
Stant 10230 Radiator Cap Replacement for Dodge Ram 1500 and More, Metal

8.3

Stant

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Why we love it

Durable metal construction ensures long-lasting use.

Fits various vehicle models perfectly.

Affordable and high-quality replacement option.

Main highlights

Key_Features_and_Benefits
16 PSI radiator cap, durable metal, 4 ear design, fits open or closed systems, robust sealing.

Ideal_Use_Cases
Perfect for various vehicle models including Dodge D150 PU, Ford Ranger, Dodge Grand Caravan, Ram 2500, Jeep Xj.

Most_Praised_Feature
Perfect fit and reliable sealing, praised for durability and cost-effectiveness.
#9
ACDelco GM Original Equipment RC115 20 P.S.I. Radiator Cap

8.1

ACDelco

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Main highlights

Seal and maintain pressure on the cooling system for vehicle safety

Raise the boiling point of the engine coolant to maintain efficiency

Fit most models of GM vehicles for expanded coverage
#10
Engine Radiator Filler Neck with Sealed Cap Upper Radiator Coolant Filler Neck Water Pipe - Compatible for Hyundai Elantra 2011-2016 for Kia Forte5 2014-2018 - Replace Part 25329-3X600/25330-1P000

7.9

YOLLKY

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Main highlights

The role of the thermostat is to regulates the flow of the coolant going through the radiator to keep the engine stay in stable operating temperature levels. This coolant filler neck is designed to match the function and form of the original one, exactly OEM design to replace your old worn parts, it can withstand extreme temperature changes, durable, high hardness, not easy to deform, ensure your vehicle performs with optimum levels of safety.

Compatible for Hyundai Elantra 2011-2016, for Hyundai Elantra GT 2013-2017, for Hyundai Elantra Coupe 2013-2014, for Kia Forte 2014-2018, for Kia Forte5 2014-2018, for Kia Forte Koup 2014-2016. Please Check out more compatible models in the product Description.

25329-3X600/25330-1P000. Prior to buying, please verify the make, model, and year of your vehicle

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radiator cap seals

Chrome Round Radiator Pressure Cap 15 lbs, 15 PSI, Universal Fit with 1-1/2" Interior Seal & 2-3/8" Exterior O.D., Durable Chrome Finish, Standard Neck Compatible

9.8

Main highlights

Engine Coolant Filler Neck with Sealed Cap Upper Radiator Filler Neck Water Pipe - Compatible for Nissan Quest 2011-2017 for Nissan Murano 2009-2014 - Replace Part 21517JP00A 214308991A

9.6

Main highlights

ACDelco GM Original Equipment RC85 15 P.S.I. Radiator Cap

9.3

Main highlights

Flygun Pack-1 Car Radiator Cap, Seal Cover with Temperature Gauge, 1.8 Bar Radiator Cover Assembly, Automotive Fuel Tank Cap, Universal for Most Racing Cars, Off-road Vehicles (Black)

9.2

Main highlights

ACDelco GM Original Equipment RC27 15 P.S.I. Radiator Cap

8.9

Main highlights

dawfall Pack-1 Car Fuel Tank Cap, Temperature-measuring Water Tank Cap, Excellent Sealing Dustproof High-pressure Radiator Cap, Universal for Cars Off-road Vehicle Modification Accessory (Black)

8.7

Main highlights

Engine Radiator Filler Neck with Sealed Cap Upper Radiator Coolant Filler Neck Water Pipe - Compatible for Mazda 5 2.3L L4 2006-2010 - Replace Part LFB7-15-17YA

8.4

Main highlights

Stant 10230 Radiator Cap Replacement for Dodge Ram 1500 and More, Metal

8.3

Why we love it

Main highlights

ACDelco GM Original Equipment RC115 20 P.S.I. Radiator Cap

8.1

Main highlights

Engine Radiator Filler Neck with Sealed Cap Upper Radiator Coolant Filler Neck Water Pipe - Compatible for Hyundai Elantra 2011-2016 for Kia Forte5 2014-2018 - Replace Part 25329-3X600/25330-1P000

7.9

Main highlights

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