Best Vacuum Testers in 2026

Pressure regulates shop air to test any cooling system or radiator cap for leaks

Quick connector works on nearly all brands of cooling system testing caps and adapters

Fills even large cooling system almost instantly, and provides constant pressure on leaks to trace their source

ACCURATE - Calibrated to strict NIST standards for best-in-class accuracy and reliability.

SMART DESIGN - Advanced sensor design with self-heated thermistor bridge and automatic temperature compensation.

SIMPLE TO CLEAN - Field cleanable sensor designed to withstand 400 Psi of positive pressure.

Professional Tester Kit: Fuel Pump Pressure & VacuumTester Gauge Kit, Carburetor Test enables testing of the fuel delivery pressure to the engine to check for worn or defective parts; Diagnose leaking valves, incorrect timing, leaky intake manifolds, and clogged mufflers. Fuel pump operating pressures up to 10 PSI (0.7 Bar), Pressure gauge 0-28 IN-Hg (0-70 cm-HG) vacuum and 0-10 PSI (0-0.7 kg/cm²) pressure

Applications: This tester will test fuel pump pressure and all vacuum operated devices, 4 tests can be performed – Fuel pump pressure, fuel pump vacuum, carburetor intake manifold, and vacuum test

Easy-to-use: Instruction manual included; Includes a variety of adapters ideal for most vehicles; 4-inch (10.2cm) diameter pressure gauge with color-coded measurement scales, 1.2-inch (3cm) thickness with rubber side notches, easy to read and grip; Extra-long rubber hose and 14mm/18mm manifold adapter; Rubber hose 40 PSI (2.8 Bar) maximum working pressure

Actron's CP7803 Vacuum and Fuel Pressure Tester Kit is a great way to fine tune carburetion and timing for peak performance and maximum fuel economy

Use to test fuel pump pressure, mechanical condition of the engine, vacuum control system function, and much more

Use to find: intake manifold leaks, blown manifold and head gaskets, worn piston rings, burned valves, and leaking vacuum lines on conventional and computer-controlled vehicles

Multi-function: JIFETOR coolant pressure tester filling kit includes detect leak, check temperature and add coolant funnctions. The coolant leak tester pressurizes the water tank/cap and if the pointer drops, it means there is leakage in the system. Connect the automotive coolant vacuum fill tool to a vacuum pump, the air will be drained and form a vacuum to draw the coolant into the cooling system. Add coolant in the vacuum, without big air pockets, and avoid engine warping or other damage.

EXTENSIVE USE: The cooling system vacuum leak tester and coolant refill kit is equipped with 17 special adapters and 1 universal cone rubber adapter, suitable for radiator openings on almost all types of classic and modern vehicles. Includes 3 radiator cap test adapters and 2 connectors to help diagnose most car radiator cap leaks. All adapters are color-coded and placed separately, can be easily selected according to the pictures indicated in the manual, which is convenient and not confused.

COOLANT VACUUM REFILL KIT: Plastic covered high-quality brass pipe manifold, equipped with brass fittings, anti-corrosion and durable. The indicator range of the pressure gauge is -30 to 0inHg (-76 to 0cmHg), usually -25 to -20inHg is the appropriate time to add coolant. 18" rubber nylon material resin reinforced hose is corrosion resistance, low fluid resistance, high bearing pressure, durability and good air tightness. Includes 21" metal hook, 23" transparent exhaust hose and 60" filler hose.

Radiator pressure tester kit performs one-stop cooling system service from leak detection to coolant filling. Professional tools and adapters are complete and suitable for most domestic and foreign vehicle models. Saves you from worries. Simple to use. Use the radiator pressure pump to pressurize the system, locate & troubleshoot leaks. Use the coolant refill tool (work with vacuum pump) to change coolant in vacuum.

Coolant pressure tester kit fits GM, BMW, VW, GMC, Porsche, Chevy, Dodge, JEEP, Chrysler and many other domestic and foreign cars, trucks, airlifts, etc., while working with 20PCS dedicated adapters for one-person operating. Fits most models while working with the cone universal adapter, but 2 people are required to operate (one person holds the cone head and the other one pumps up). Manual tester pump with gauge calibrated from 0-35psi /0-2.5bar.

Pneumatic vacuum coolant purge refill tool gives efficient flush while feeding the system with fresh coolant under vacuum. Quick and clean technique allows no trapped air to remain. Features quick coupling design. Working range: -60~-50 cmHg (-23~-20inHg). Operate with specific adapters and universal adapter, this cooling system refill tool can fit almost all types of vehicle models, one person operable. Vacuum pump required, but no included.

Coolant pressure tester kit includes 3 tools set, radiator leakage detector, coolant refill tool and thermometer. 17PCS specific adapters and 1 universal cone rubber adapter, to connect almost all types of radiator openings on the domestic and imported vehicles, help to check the leak of water tank and fill the coolant under vacuum environment. There are also 3PCS radiator cap adapters and 2PCS connectors for testing the leakage of the radiator caps.

Manual vacuum pump pressure checker uses high quality aluminium cylinder, much harder than regular plastic one. 21" long rubber hose, brass parts, anti-corrosion and durability. 3" large dials with color coded small scale range 0-35PSI, very easy to observe. Use the hand pump tester to pressurize the radiator/cap and observe whether the pointer drops over time to confirm a system leak.

Cooling system coolant filling manifold tool adopts superior brass manifold body with plastic cover, and 18" long rubber hose, brass parts for anti-corrosion and durability. The pneumatic vacuum refiller firstly uses the workshop air to pump the cooling system and form a vacuum, and then pumps the coolant into the system. Add coolant under vacuum environment, there is no large cavitation, avoid engine warping and other damage.

It is Highly durable

Product type:ELECTROMECHANICAL GAUGE

Package Weight: 4.65 lbs

【COMPRESSION TESTER】the 8MILELAKE engine compression tester is used to take pressure testing for cars, trucks, motorcycles, ATV, UTV and so on, it work well for gas, petrol, and fuel engine cylinders.

【WIDE COMPATIBILITY】this engine compression tester includes both straight and curved rubber cone end adapter, and 4 brass adapter in different size, fit for most of vehicles.

【ACCURATE READING】the tester panel has dual units (0-300 psi, 0-20 kg/cm²), which is easy to read and make reading more accurate. the acrylic glass cover and rubber protective cover can protect the tester well.

◇ Function --- This radiator pressure tester kit allows you to change coolant and test for leaks in your vehicle's cooling system, including the radiator, heater core and radiator cap, in a simple and straightforward manner.

◇ Premium Quality --- Made of high quality and durable material, high strength and toughness, providing higher stability and longer service life.

◇ Note ---If the temperature is too high, you may get scalded. Before you open it, make sure the tank is cool when you use it.

Tester helps detect internal and external leaks.

Tester helps detect internal and external leaks Perfect for head gasket failure detection (which side of block or which cylinder leaks) Features: Thumb-operated relief valve for quick and easy pressure release and self-locking quick-disconnecting components.

Compatible for GM(Buick) ,Jeep Peugeot, Subaru, Acura , GM(Nova , Spectrum , Sprint) , Mitsubishi, Nissan , Mazda , Toyota , Infiniti , GEO , Suzuki ,Isuzu , Mercedes Honda ,Toyota , Suzuki , Mitsubishi , Acura Mercedes (ML-class)

EASY COMPLETE COOLANT SYSTEM REFILLER: Refills the entire cooling system including the Heater Core

HUGE TIME SAVER: Eliminate time consuming bleeding and purging, and completely remove all trapped air from your cooling system; Removing air through a radiator burp is much more time intensive

DISCOVER LEAKS: It’s easy to check for leaks while under vacuum; if your vacuum level decreases while all valves are off, you have a leak in your system

12V&24V Battery Tester - M200pro battery capacity tester is a professional battery tester that can test all types of 12V and 24V 40-2000CAA batteries, including regular flooded, AGM flat plate/spiral, GEL batteries, etc., The battery tester will display SOH (State of Health), SOC (State of Charge), Voltage, Current, Rating, and many other readable analysis results.

Automotive Car Battery Analyzer - M200pro 12V battery load tester provides you with basic battery parameters : voltage, internal resistance, cold cranking, AH capacity, battery health and state of charge. Battery tester will give you professional advice on whether to recharge or replace the battery.

3 Testing Functions - M200pro automotive battery tester can test battery health, and shows if the battery is in good working condition; Cranking test will show if the cranking system has enough power to start the engine; Charging systems test will show if the battery charging current is normal. Also support alternator and starter test.

VACUUM TYPE COOLANT FILLING FUNCTION: Pneumatic vacuum coolant filler first sucks and forms a vacuum on the cooling system by using shop air, then draws coolant into the cooling system. Add coolant in vacuum, there is no large air pocket and avoid warping or other damage in engine. Normally, it takes 5-10mins to refill the coolant, the exact time depends on the size of the tank. Easy to operate and save time.

WIDELY USAGE RADIATOR PURGE AND ANTIFREEZE REFILL TOOL: JIFETOR antifreeze filler kit includes a O.D. 32mm rubber adapter and 3 sizes adapter sleeves, with O.D. 45mm 40mm and 35 mm, fit for most types of vehicles. The adapter sleeves can be attached on the adapter on refill tool, and then replace the radiator cap to seal the cooling system, to help radiator purge and coolant refill. Please check your radiator opening size before bidding, there are only 32mm 35mm 40mm 45mm, 4 sizes adapters.

WATER TANK COOLANT VACUUM REFILL: Premium aluminum manifold body, equipped with brass fittings, anti-corrosion and durable. The index range of gauge is -30~0inHg (-76~0cmHg), and normally -25~-20inHg is right time to add coolant. Tee fittings is used for vacuumizing, and coolant filling hose for refilling coolant.

Tests cylinder pressure on diesel cars and trucks

Deflator allows for an air release and automatic reset of the gauge for repeat testing

Swivel end quick coupler provides easy connection to all Lang diesel compression adapters

Item may be defective or damaged during shipping, please contact us before returning it, we will try our best to solve the problem.

Reduces the refill time of cooling system and prevents the air flow into the system. No more bleeding and save the time of clean up.

Easy to connect with air pump and creates a vacuum. Attaching the filler hose

[ Multi-function]: Our universal radiator pressure tester kit can test the leakage in the radiator system, replace the coolant and remove air bubbles. You can use the tester to quickly and easily solve any problems related to radiator pressure, making your work easier and faster.

[High quality]: The universal radiator tester tool is made of high-quality aluminum alloy, rubber and nylon, with better sealing, higher strength and good toughness, providing higher stability to prolong service life, and better vacuum effect it is good.

[Complete specifications]: color-coded radiator test caps make it easy for you to choose the right test cap for your work without causing confusion. The 17pcs radiator test cap is suitable for testing the cooling system of most cars. It is equipped with a coolant replacement system to help you easily replace the old coolant.

PULL HARDER , IMPROVE MPG & KEEP YOUR MOTOR HEALTHY --BY ELIMINATING BOOST LEAKS! This boost leak tester is designed to fit over the inlet flange of your turbo charger and allows you to pressurize the charge system with shop compressed air while the vehicle is off. This allow you to listen for leaks that become easily identifiable

Fits over 4" turbo inlets or over any 4" hard pipe with outer diameter (O.D) of 4". The End cap O.D. is 3" and can be slipped inside flexible hoses with 3" inner diameter. Or adapt the end cap to other silicone adapters.

Anti-Slip bead and grooves machined on hose mating surface. End Cap made from 6061 Solid Billet Aluminum and Anodized -Custom Premium 30 PSI (2Bar) Boost Gauge - Stainless Steel and liquid filled for a shock proof design. Universal Tire Schrader Valve & Compressor fittings included. Stainless Steel T-Bolt Clamps

【Coolant Vacuum Refill Kit with Simple Operation & Time-Saving & High Safety】This coolant refill kit is mainly used for coolant vacuum filling and vacuum pressure testing. By generating a vacuum in the cooling system, and then sucking the coolant into the radiator, there is no need for redundant exhaust operations, which greatly reduces the time required for filling coolant.and effectively reduce the risk of engine overheating and damage.

【Widely Applicable Coolant Vacuum Cleaning Kit】 This coolant drain kit includes 8 adapter sleeves in 4 sizes (outer diameter 35mm/1.37 inches, 40 mm/1.57 inches, 45 mm/1.77 inches, 55 mm/ 2.17 inches) and 2 types of general rubber cone plug adapters (outer diameter range: 0.55-1.77 inches) /0.6-1.97inch) can meet your different maintenance needs, suitable for most cars, SUVs and light trucks. (Note: The new OD 55mm adapter sleeve is also compatible with Porsche)

【Powerful Coolant Pressure Test Kit】The pressure gauge adopts dual scale design, and the reading is simple and accurate (measurement range: -30~0 inHg, -76~0 cmHg). The meter head is equipped with a rubber protective cover to prevent falling & scratching, Ensure the safety of the meter head. It is also equipped with a high negative pressure EV15 vacuum generator & a 60-inch transparent coolant filling hose, which can quickly and efficiently replace the antifreeze.

【Powerful Coolant Vacuum Refill Kit】 Perform vacuum pressure test and coolant vacuum filling service. Use an extra vacuum pump to work with this airlift coolant replenishment tool to create a vacuum in the cooling system, and then suck the coolant into the radiator. Quick replenishment system, no air pockets or hot spots are generated, to avoid distortion or other factors damaging the engine.

【Convenient & Widely Applicable Coolant Vacuum Cleaning Kit】By generating a vacuum in the cooling system, the time for refilling new coolant is greatly shortened, and there is no need for time-consuming air bleeding. This coolant vacuum cleaning kit is widely used Used in various domestic and foreign automobiles, SUVs, trucks, etc.

【Excellent durability & air tightness】 This coolant refill kit adopts a reliable metal structure to ensure durability and good air tightness, a reliable & durable tool set.

Application – Fits for GM 6.6L Duramax engines for Diesel fuel pressure and vacuum testing.

Package Includes – Gauge assembly with 6-ft. hose and quick coupler.

Specification – Equipped with a 3-1/2" gauge reading from 30 inHg to 15 PSI.

Apply To Cooling System-- From leak hunting to coolant change, this coolant leakdown tester and refill kit contains everything you need for cooling system leak detection and filling, and will accompany you throughout the journey. Radiator hand pump tester(range: 0-35 psi / 0-2.5 bar) with quick disconnect system can be a shortcut to radiator sealing inspection through observing whether the pressure gauge pointer move. Stainless steel thermometer(0-200℃ / 32-400℉) measures coolant temperature.

Pneumatic Vacuum Type Filling-- Compressed air tool forms a vacuum in the cooling system, then sucks the new coolant into the entire system and eliminates air pockets. The airlift coolant refill tool has vacuum gauge(-30-0 inHg / -76-0 cmHg), plastic-housing brass manifold body and 18-inch rubber hose for long lifespan. Add coolant between -25~-20 inHg. Pneumatic operation requires an air compressor, but we do not provide it. Normal vehicles complete the coolant change process in 10-15 minutes.

Radiator Adapters-- The pneumatic vacuum refill set & radiator leak test kit comes with 21 color-coded radiator adapters in total, including 17 special radiator adapters, 1 universal tapered adapter and 3 aluminum cap adapters for radiator airtightness check and coolant refill work, allowing large-scale use on cars, motorcycles, RVs, trucks, boats, airlifts, etc. Each adapter's suitable vehicle models are given in the description and instruction.

MULTIFUNCTION: The 18 pcs radiator pressure tester kit allows detecting for leakage in radiator system, especially head gasket failure detection, and help you to change coolant more efficiently.

WELL MADE KIT: The adapters are made of high quality aluminum, and treated with rust and corrosion protection. High tenacity rubber and high-impact plastic for longer service life.

COLOR CODED SET : Color coded radiator adapters are convenient to select the suitable one according to different colors without messy. 12 pcs radiator adapters are perfect to test cooling systems on most vehicles.

Eliminates the need for coolant system bleeding

Prevents air pockets that can lead to hot spots in the cooling system

Drastically reduces the time it takes to fill cooling system

【28PC Universal Radiator Pressure Tester & Vacuum Coolling System Kit】：Equipped with 17 test caps for testing cooling systems on most domestic and import vehicles, such as Compatible With VW, BMW, Ford, Opel, Porsche, Audi, etc. Working pressure is from 0 to 35 psi. It will be a good helper in your daily life.

【28pcs Universal Radiator Pressure Tester Kit】：Pressure Tester Automotive Equipped with a bold molded case, which keeps your kit organized, providing you a convenient way to tester. Besides, with the case, you could easily bring this radiator pressure tester set to anywhere you needed.Color coded radiator test caps aid with identifying which cap is needed for each application, so it’s easy for you to choose the suitable test cap for the job without messy.

【28 PCS Radiator Pressure Tester】: Comes with various instruments, which help you solve any problem about radiator pressure conveniently and quickly.Special design of vacuum purge and refill tool connection allows easy testing for leakage in radiator system and quick change of coolant. With this pressure tester, you could easily do the job.

👍 USED FOR PRESSURE/VACUUM TESTING GEARCASES — This combination unit does both pressure and vacuum testing in 1 unit. Simply flip a valve on the side and change it from vacuum to pressure.

👍 COMPLETE SET — This kit comes with gearcase pressure and vacuum tester and adapters for Suzuki, Tohatsu, and Yamaha lower units. Comparable to: CDI 551-34PV S-34 V-34.

👍 EASY INSTALLATION AND REMOVAL — The gearcase pressure and vacuum tester also comes with brass swivel quick disconnect to make the installation and removal process easier and faster. It fits most Chrysler, Evinrude, Force, Johnson, Mariner and Mercury outboards.

Engine Vacuum Pressure Tester: This tester will test fuel pump pressure and all vacuum operated devices. Diagnose leaking valves, incorrect timing, leaky intake manifolds and clogged mufflers

User-friendly Design: Heavy gauge with protective rubber case to prevent scratches. Friendly for your hands. Comfortable to grab and use.

Easy to Take: All the tools are well organized in a blow molded case for easy transportation, simple storage, and quick identification.

Comprehensive testing: Our coolant pressure tester kit includes various adapters that enable you to test several types of radiators and cooling systems, you will receive 1 pressure test pump with pressure gauge 1 thermometer 3 chrome plated steel cap adapters 13 radiator cap adapters 1 carrying case

Superior Quality: Made from high-quality aluminum, this coolant pressure tester kit is built for durability and long-lasting performance.

Accurate Readings: The kit allows accurate pressure readings of up to 35 PSI, enabling you to diagnose any coolant system leaks or issues with ease.

SET INCLUDES: This Cooling System Leakage Tester and Vacuum Refill Kit includes a cooling system pressure pump with a nylon tube and gauge, a vacuum pump and refill apparatus, a black radiator cap tester, a blue radiator cap tester, a 90-degree pressure pump connector, a thermometer, a radiator test cap wrench, a conical rubber adapter, a coolant hose, a drain hose, and 22 test caps (No. 3 - No. 24) that cover a wide range of vehicles. Please see product manual for full compatibility details.

DESIGN CONSIDERATIONS: This set is designed to let you quickly and easily test for leaks in your cooling system. With the blue and black connectors, you can even pressure test your radiator caps. The vacuum pump and refill apparatus makes it simple to connect to your shop air supply, so you can refill coolant faster than time-consuming air-bleeding. The 90-degree connector allows you to work on recovery tanks located deep in the engine compartment.

QUALITY YOU NEED: Our Cooling System Leakage Tester and Vacuum Refill Kit makes it easy to test for leaks and refill coolant on nearly any vehicle. With added safety features, like its included thermometer and pressure release valve, you'll be able to work with confidence. Thanks to nylon construction this set is lightweight for easy transportation, durable, and easy to clean. The included custom carrying case makes taking it to and from jobsites a breeze.

[Remove Air, Refill, Leak Test]: After a radiator flush, use the ABN Radiator Pressure Tester Kit to remove trapped air, refill your entire cooling system including the heater core without the need of bleeding and purging, and perform vacuum leak tests to avoid engine damage

[For Your Compressor]: 70-110 PSI working pressure; Radiator coolant vacuum refill kit includes venturi valve to turn any air compressor input into a strong vacuum force and the muffler dampens noise output during operation

[Perfect Size]: 5 radiator coolant tank adapters (31-45mm diameters where touches vehicle reservoir and/or radiator fill neck) and a tapered universal cone; Gauge indicates -30 to 0 (100xkpa inHG) and -1 to 0 BAR; Plug connector fits standard air compression quick disconnect coupling