Testing the pressure in your car radiator is one of the regular maintenance tasks. Usually, a garage would check the parameters during a regular inspection. But a radiator is a precious and vital part of your motor system. If you don’t want to make an appointment for every check with your garage, a radiator pressure tester tool is also available for DIY use.

Those DIY kits fit even into your car, and for sure into your garage. When you suspect a leak, because you found a wet spot under your car, you can immediately check the pressure. In hot conditions even just the drive to a garage could already damage the system. With a radiator pressure tester and refill kit, you keep your engine safe.

The selection of kits you find here is just examples of the wide range of products. You can find simple handgun style pressurizers for a quick check or sophisticated sets with two pressure gauges and a separate temperature gauge.

List of the Best Radiator Pressure Tester and Oil Pressure Tool

10. Goplus Radiator Pressure Tester Pump

Goplus 18pcs Universal Radiator Pressure Tester, Pump Type...#
  • 【Durable Material】This tool is made of high...
  • 【Convenient and Helpful】This universal...
  • 【Wide Application】There are 8 radiator cap...
  • 【Easy to Use】This radiator pressure tester and...
  • 【Easy to Carry】The weight of this set is very...

The Goplus pressure tester is a universal kit for nearly all car models. It provides 8 different adapters for the pressure outlet, and one should fit your model. Three different seats make the fit even better. The pressure testing range is between 0 to 35 psi and covers American and imported car types. The color coded pressure gauge gives you a fast indication if everything is alright or if your radiator needs a refill.

A small quick release valve lets pressure out if necessary. It can also be used to check the kit itself if it has any leaks, usually because the adapters are not sitting tight enough. With the box comes a plastic carry case where all parts fit in. It is easy to carry along and to store. The Goplus can also be used for raising the pressure up again.

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09. Astro Pneumatic Tester and Cooling System Set

Astro Pneumatic Tool 78585 Universal Radiator Pressure...#
  • Unit is suitable for domestic and import vehicles
  • Special design of vacuum purge and refill tool...
  • Blow molded case

This handy pressure tester will be delivered in a shiny blue plastic box containing all parts of the device. You can select one of the 9 adapters for your car model and easily fit it to your radiator. High-quality plastic and seals are the reason the pressure drop shown in the gauge is always from the radiator, not from the tool. All caps are made from high-performance rubber and plastic as well as o-rings and work with most US and imported vehicles.

With the Astro Pneumatic tester, you can check the pressure in your radiator and find possible leaks, but you can also pressurize the system again. With simple shop air, the system gets the air out first, creates a vacuum, and then refills without leaving any air bubbles in the hoses and other parts or the cooling system. The test range is between 0-25 PSI.

08. 8MILELAKE 1 Pressure System Leakage finder

8MILELAKE 18pcs Radiator Pump Pressure Tester and Vacuum...#
  • This radiator pressure tester helps find internal...
  • 8 radiator cap adapters included, and the test...
  • Included a Pump with gauge For testing automotive...
  • Large volume pump capacity reduces strokes...
  • Package includes: 17pc kit set and Carrying Case....

If you think your radiator system is leaking, you should immediately check the pressure. The 8Milelake 1 is a good tool for this task. It comes with a vast selection of adapters and seats to ensure the highest compatibility with most car models. Whether your car is made in the US or an import model, one of the adapters should always fit.

The gauge and the valve are connected to the pump, so you have only one tool in your hand. The gauge shows a pressure range from 0-35 PSI. With the valve you can release pressure while the hand pump gets your system up to the right pressure again. Usually, you need only one stroke for a refill because of the pump’s large capacity. 8Milelake ships the pressure tester with a carrying case. It keeps all tools and parts at the right place and makes it convenient to use even in small spaces.

07. Mityvac MV4560 Quick Tester for pressure

Sale
Mityvac MV4560 Automotive Radiator/Cooling System Pressure...#
  • Economical, accurate and simple method to find...
  • Pinpoints external leaks caused by loose clamps or...
  • Diagnoses internal leaks caused by a blown head...
  • Tests radiator and coolant bottle caps to ensure...
  • Contains adapters to test the cooling system and...

Mityvac designed this handy tester, not for the professional garage but to be in your car all the time. It needs nearly no time to assemble and is so small that you can always find someplace to store it in your car.

Even with this simple pistol-like tool you can find leakages of damaged hoses or cause by loose clamps. It pinpoints you in seconds to the problem. Just select the right adapter, connect the hose, screw it on your radiator connector and check the gauge. With the hand pressure pump, you can quickly add air to the system and see if it’s leaking. Make sure you have a tray under your car collecting leaking radiator liquid. If you have a problem or question the Mityvac’s website offers support.

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06. DAYUAN DIY Pressure tester kit

DAYUAN 28pcs Universal Radiator Pressure Tester and Vacuum...#
  • 28pcs Universal Radiator Pressure Tester and...
  • Allows easy testing for leakage in radiator system...
  • Color coded radiator test cap makes it easy to...
  • Special design of vacuum purge & refill tool...
  • One more adaptor than 27pcs kit suitable for...

Dayuan is another easy to use DIY radiator pressure kit for your home garage. It does the job of checking your radiator system perfectly. With 28 pieces in the box, this system is one of the most flexible kits when it comes to compatibility with radiator models. The caps are also color coded, making it easier to remember the one for your car model. One outstanding feature is a temperature gauge, warning you about hot radiator liquid.

The hand pump is smaller in capacity than other models, but with a few strokes you get the pressure up to 35 PSI. Once you checked that no leaks are apparent, just release air with the valve. Part of the set is also a 3 piece vacuum purge and refill kit to get all the air out of the system. The plastic carrying box keeps all parts in place.

05. WINTOOLS Standard pressure tester with gauge adapters

WINTOOLS 18pcs Auto Cooling System Radiator Cap Pressure...#
  • This radiator pressure tester helps find internal...
  • This radiator pressure tester kit includes 8...
  • Included a Pump with gauge For testing automotive...
  • Large volume pump capacity reduces strokes...
  • Package includes: 17pc kit set + Carrying Case.

One of the nice additions to this radiator pressure testing set is a temperature gauge. It ensures the system has cooled down enough to safely open the screw on top of your radiator. The kit contains 8 different adapters for most car models, including Asian or European models.

Wintools ships the set with a handy carrying box to store all parts for the pressure testing system. The handpump has a gauge and release valve attached to it making the procedure easy to complete. Fitting the caps is quickly done with the universal clamp. Once the pressure kit is installed, just pump air and hold the pressure. If there is no water leaking up to a PSI of 20-30 (depending on radiator specifications), you should be fine. Release air and refill liquid if needed.

04. BELEY Radiator pressure tester for cars

BELEY Automotive Radiator Pressure Leak Tester Vacuum Type...#
  • 28pcs BELEY universal radiator pressure tester and...
  • 17pcs color coded radiator test caps make it...
  • Univesal fit for most vehicles: Acura, Mercedes,...
  • Special design of vacuum purge refill tool...
  • Durable exact size of nylon testing caps,...

The Beley’s radiator kit lets you test your system and change the cooling liquid quickly. The set contains 28 pieces, with most of the different caps fitting a wide range of car models. This pressure tester works with most standard radiators in US and foreign cars. Once you have found the right cap for your model just remember the color, so next time you don’t have to search again.

Although usually, a PSI of 16 is the recommended pressure for radiators, the pump gets up to 35 PSI for a real stress test of your system. You will recognize any leakage immediately. Make sure you have some trays under your car to collect the leaking liquid. This set is in the middle price range and has a manual included. It saves you time and money for a mechanic.

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03. Automio Cooling System Leak Tester

14PCS Cooling System Leak Tester Universal Car Radiator...#
  • Comprehensive Tester kit to test water tank and...
  • Check leakThe brake system can be vented by one...
  • Color distinguished water tank cap adaptors, easy...
  • Blow molded case, easy to store and transport
  • Various gaskets fit most major cars and trucks....

You won’t miss the right cap for your radiator again with this pressure tester kit. The caps are not the only color coded with rings like other models but painted in different colors. You will find a simple hand pump with a pressure gauge in the box, as well as a hose and a thermometer to check the temperature of the radiator liquid.

While this is one of the more simple kits it still checks your system for leakages if properly applied. Make sure the caps and hoses are sitting tight and no pressure can get out from the tool. You can check this before fitting by pressing your thumb on the end of the cap. Because of the small capacity of the hand pump you need a few more strokes.

02. NuaDua Car Pressure Tester with two gauges

NuaDua Car Radiator Pressure Tester and Vacuum Type Cooling...#
  • With this practical tool kit, you can detect...
  • This is a high-quality 28 pcs universal master...
  • The vacuum purge and refill tools help you to...
  • Allows you to change coolant and test for leaks in...
  • With color coded radiator test caps to easily...

If you are looking for leaks from your radiator or the oil system, this kit detects any engine leaks. The multiple color coded adapters connect to the most radiator and oil screws in modern engines. But you can not only check for leaks. The vacuum purge helps you refill the system without leaving the air. It removes even the smallest air pockets.

The pressure pump has its own gauge attached, so you can keep an eye on the pressure pumping air in the system. The other gauge is used for the vacuum system when you want to refill it. With this pump, you can save a lot of time when refilling the radiator system with new liquid. You also get a temperature gauge with the box. All parts can be conveniently stored in the carrying box made from durable plastic.

01. A ABIGAIL Universal Pressure testing kit

A ABIGAIL Universal Radiator Pressure Tester and Vacuum Type...#
  • 【High Quality】A ABIGAIL universal radiator...
  • 【Full Color Coded Set】Color coded radiator...
  • 【Function】This universal radiator testers...
  • 【Easy Storage】All-in-one Tool Set, includes 19...
  • 【Service】100% satisfaction guarantee, If you...

This kit is quite similar to the Dayuan set while slightly higher priced. The materials used are high quality aluminium, pressure resistant plastic, and leak preventing rubber. With 16 different caps and adapters, there should be no problem finding the right one for your model. To make sure you remember it for the next time, the caps are color-coded.

The manufacturer gives a 100% satisfaction guarantee and offers support if any problems occur. While the handpump is used to pressurize the system and check for leaks, the vacuum purge supports you when refilling the system. The extra long hoses give you enough space to operate, you don’t have to lean over the engine as with more simple tools. The pressure range is 0-35 PSI. A quick release valve gets the air off the system once testing is done.

What to know when using radiator pressure tester

The DIY radiator pressure kits are easy to use even for beginners. But you have to take some precautions before utilizing them. First is, as always when working under the hood is to take the negative pole off the battery. This ensures you won’t make a short circuit unintentionally.

The next step is to check the radiator temperature. Some sets actually provide a separate gauge for it. Some cars may have a radiator thermometer built-in as well, but don’t mistake it for the engine temperature. To be on the safe side, use the pressure tester only when the motor has cooled down for an hour or more. Protect your hands with leather or heavy duty gloves and don’t lean over the outlet of the radiator when opening the outlet. Also, always use a tray under the car to collect leaking liquid.

Final Verdict for the Best Radiator Pressure Tester and Oil Pressure Tool

If you need a quick or regular check of the radiator pressure in your car, then some simple tools will do the job. Cheaper products sometimes have problems to keep the pressure up and provide a false reading. The reviewed sets have high quality caps with rubber seals to prevent the tool from leaking.
You need at least one gauge to check the pressure. Most hand pumps get you up to 35 PSI although 20 PSI is enough to check for leaks. A quick release valve attached to the pump is handy when operating the tool.
For owners of many cars, a set with a large selection of caps and adapters is a good choice to ensure the right fit. Color coded parts help you to use the same cap for the next time. The longer the hose is, the more convenient is the testing.
Kits with a vacuum purge and a second gauge help you when refilling the system, leaving no air pockets and ensure the radiator will run again without any leaks.