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🔍 Don’t guess—know your engine’s health in minutes!
The RELD Cylinder Head Gasket Tester is a professional-grade CO2 leak detector designed for liquid-cooled petrol, diesel, and LPG engines. Made in the EU, it offers 99.9% accuracy by measuring CO2 concentration in the cooling system to identify gasket or head damage. The kit includes a universal adapter (25-55mm), 100ml of reaction fluid for up to 50 tests, and an easy-to-use manual. Its rapid 5-minute test saves time, money, and stress by enabling DIY diagnostics across a wide range of vehicles and machinery.









| ASIN | B07RS3N98V |
| Customer Reviews | 4.4 4.4 out of 5 stars (7,497) |
| Global Trade Identification Number | 05907440789067 |
| Item Weight | 240 Grams |
| Mfr Part Number | 7777252 |
| Model Number | 7777252 |
| Unit Count | 1 Count |
I**D
Big leak
The bottle had lost 10-15% of its contents during before it arrived and the liquid was not blue anymore. Color was dirty and almost looked like the liquid had reacted allready. Price was cheaper than many other products, but I reccoment spending that little extra for a better quality kit
S**N
Autant que je puisse en juger, le kit répond à mes attentes. Il est arrivé complet et facile à utiliser. La quantité de réactif est vraiment importante, on doit pouvoir faire une vingtaine de test sans problème.
R**E
Works as advertised, uses minimal amount of fluid
M**H
Worked as described from blue too green .....
R**O
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🥳
G**E
Il meccanico mi aveva prospettato una riparazione estremamente onerosa per il motore della mia barca (smontaggio testata, revisione iniettori, valvole, guarnizione, ecc) per un costo irragionevole. Ho fatto il test ed ho scoperto che il problema era da tutt’altra parte…
Trustpilot
5 days ago
2 months ago