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The Reld Cylinder Head Gasket Tester Kit offers a fast, reliable, and universal solution for detecting combustion leaks in petrol and diesel engines. Featuring a 99.9% efficiency rate and a versatile adapter for 25-55mm engine sizes, this EU-made kit empowers professionals and enthusiasts to perform up to 50 precise tests, eliminating the need for costly mechanic visits.








| Alarm | Visual |
| Asin | B07RS3N98V |
| Best Sellers Rank | 1,287 in Automotive (See Top 100 in Automotive) 58 in Diagnostic, Testing & Measuring Tools |
| Brand | RELD |
| Colour | Multicoloured |
| Country Of Origin | Poland |
| Customer Reviews | 4.5 4.5 out of 5 stars (7,915) 4.5 out of 5 stars |
| Global Trade Identification Number | 05907440789067 |
| Item Dimensions D X W X H | 17D x 9W x 5H centimetres |
| Item Weight | 240 Grams |
| Manufacturer | RELD |
| Model Number | 7777252 |
| Operating Humidity | 90 percent |
| Part Number | 7777252 |
| Product Style | Classic |
| Unit Count | 1.0 count |
User
SAVED ME A FORTUNE
"Saved me a fortune" I wasn't sure if my head gasket had gone after my coolent reservoir was empty on my van and heaters were blowing cold air. I called a local garage and they gave me a quote for an inspection which I could not afford. Then I saw this. Arrived in good time. I followed the instructions and turns out my head gasket is fine after all. This kit has everything you need for up to 50 tests. Value for money is excellent and the quality of the parts is really good. Functionality is spot on as it's a very easy to use kit. Highly recommend product.
User
Great little kit
Great item, does as described, able to check for head gasket leak, and many more to come as kit does multiple tests
User
Life Saver
Great product works exactly as expected and is perfect to verify Head Gasket condition.
User
Accurately diagnosed head gasket failure
I'm sure no one wants to have to buy a head gasket testing kit, but sometimes necessity demands it. I brought this kit to test the head gasket of my Rover 45, with a 1.4 k series engine, renowned for head gasket failure. I had seen some symptoms of gasket failure, so brought this kit to be sure before taking to a garage. The kit contains instructions for use, which are easy enough to understand, but a little vague in some areas. We were left wondering if we were doing the right thing at some stages. The rubber bung looks like it would fit a wide variety of expansion tanks, as it has a fairly significant taper. There is enough liquid for probably 30 tests. The liquid is supposed to turn green, or yellow after about 5 minutes if exhaust gases are present in the coolant system. Sure enough, after about 5 minutes then liquid turned very slightly green. The colour change was so slight that we were still not 100% confident. But the garage confirmed that even a slight change is a smoking gun. After taking it to the garage, they confirmed that the head gasket was blown. So this test is definitely accurate. Just not to be used as the sole test, just as a guidance. The kit is good quality, and does what it says, so functional.
User
Positive
I'm thrilled with the RELD Cylinder Head Gasket Tester Kit. It's incredibly easy to use, and the results are clear and quick. I was able to confirm the integrity of my head gasket with confidence, saving me a lot of worry and expense. The kit is well-made, and the reaction liquid works perfectly. Highly recommend this for its accuracy and convenience!
User
Great Sniff tester.
The Car I was looking at had a slight coolant leak. I wanted to be positive it wasn’t the head gasket. This non-invasive test “sniffs” for CO2 in the coolant at the header tank. Any change of colour it’s confirmed. If, as in my case, it stays blue and doesn’t change colour, it’s confirmed there is no co2 and therefore the head gasket was not a problem. Inexpensive Peace of mind.
User
It does what it needs to
I received it and all was good poured out the liquid and it was a light green from the get go. Regardless of that I tested with two vehicles exhaust gases before using in the cooling system. Both vehicles turned the liquid yellow one longer than the other. Tried on the cooling systems done what it needed. The only issue i had was the colour of the liquid as another I ordered was a deep blue and the green suggested a possible slight contamination. All in all if the fluid is the colour it should be it does work but it's important to remember if it doesn't turn it doesn't mean its not the head gasket.
User
Excellent test kit
Excellent kit which comes with clear instructions and is very easy to use.The first test i carried out was on a recently acquired Audi which I suspected had a head/headgasket issue and the test came back positive (the liquid turned from blue to green within a minute or two). The diagnosis was later confirmed by a trusted garage who carried out their own test and found exhaust gasses in the coolant.The second test i carried out was on a SEAT which has been suffering from coolant loss for at least a year or so. As I'd already bought the test kit for the Audi i thought I would give it a go with this car too. Again the test came back positive (liquid turned blue to yellow very quickly). This diagnosis was also later confirmed by a garage who found the EGR cooler had failed.I also tested our other vehicles and thankfully in those cases the tests all came back negative.In summary a really useful kit, very easy to use and in my experience 100% accurate.
User
Effektives Werkzeug zur Überprüfung von Zylinderkopfdichtungen
Der RELD Zylinderkopf Dichtung Tester hat sich als äußerst nützliches Werkzeug erwiesen, um die Integrität von Zylinderkopfdichtungen in Autos und Motorrädern zu überprüfen. Mit diesem CO2-Lecktester können Sie schnell und einfach feststellen, ob ein Leck im Kühlwassersystem oder in der Zylinderkopfdichtung vorliegt.Die Anwendung des RELD Dichtung Testers ist denkbar einfach. Zunächst wird der Tester mit einem mitgelieferten Adapter am Kühlsystem des Fahrzeugs angeschlossen. Dann wird eine spezielle Flüssigkeit in den Tester gegeben, die bei Kontakt mit CO2-Gas die Farbe ändert. Durch das Starten des Motors und das Beobachten der Farbänderung in der Flüssigkeit kann festgestellt werden, ob ein CO2-Leck vorhanden ist.Die Genauigkeit des RELD Dichtung Testers hat mich beeindruckt. Er erkennt selbst kleinste CO2-Lecks und ermöglicht so eine schnelle Diagnose von Problemen mit der Zylinderkopfdichtung. Durch die sofortige Reaktion der Flüssigkeit auf das CO2-Gas kann der Tester auch bei geringfügigen Lecks genaue Ergebnisse liefern.Die mitgelieferte Flüssigkeit reicht für etwa 50 Tests, was für die meisten Anwendungen ausreichend ist. Es ist auch möglich, zusätzliche Flüssigkeit separat nachzukaufen, um den Tester weiterhin verwenden zu können. Die Flüssigkeit ist einfach zu handhaben und auslaufsicher verpackt, was eine saubere und bequeme Anwendung ermöglicht.Ein weiterer Vorteil des RELD Dichtung Testers ist seine Universalität. Er kann für alle Arten von Autos und Motorrädern verwendet werden und bietet eine zuverlässige Methode zur Überprüfung der Zylinderkopfdichtung. Egal, ob Sie ein professioneller Mechaniker oder ein Hobbyist sind, dieser Tester ist eine wertvolle Ergänzung für Ihre Werkzeugkiste.Die Qualität und Haltbarkeit des RELD Dichtung Testers sind ebenfalls bemerkenswert. Das Gerät ist robust und langlebig, und der Adapter passt gut auf die meisten Kühlsysteme. Die klaren Anweisungen machen die Bedienung einfach, selbst für Personen ohne technische Vorkenntnisse.Ein kleiner Nachteil des RELD Dichtung Testers ist, dass er einige Zeit benötigt, um genaue Ergebnisse zu liefern. Nach dem Starten des Motors dauert es einige Minuten, bis das CO2-Gas den Tester erreicht und die Farbänderung in der Flüssigkeit sichtbar wird. Dies erfordert etwas Geduld, sollte jedoch berücksichtigt werden, um genaue Ergebnisse zu erhalten.Insgesamt bin ich mit dem RELD Zylinderkopf Dichtung Tester sehr zufrieden. Er bietet eine einfache und effektive Methode zur Überprüfung der Zylinderkopfdichtung und kann potenzielle Probleme frühzeitig erkennen. Die Genauigkeit, Universalität und Qualität des Testers machen ihn zu einem unverzichtbaren Werkzeug für jeden Fahrzeugbesitzer oder Mechaniker, der die Gesundheit seines Motors gewährleisten möchte.
User
Sencillo de utilizar
Muy buen producto. Cumple su función.
User
Goed voor Controle
Dacht dat mijn BMW 325i n52 een lekke koppakking had. Dacht bestel ik dit maar om te kijken als dat werkelijk het geval was. Gelukkig geen lekke koppakking🥳
User
Good
Works perfectly!
User
Basic but effective combustion leak detector.
Worked as it should. I like the fact it takes very little fluid for each test. Verified exhaust gas getting into cooling system after other diagnostic procedures. You need to understand this is one of a few methods for determining headgasket & cylinder head leaks. Good value. Wish it came with more fluid.
Trustpilot
2 months ago
3 days ago