3CX, 4CX, MIDI CX
Telescopic Handlers, Wheeled Loaders, Dumpers
The hydraulic oil filler cap is a key component for sealing the tank. Its job is to prevent oil leaks, protect against the ingress of dirt and water, and to equalize the pressure in the tank thanks to a built-in breather. If your cap is cracked, lost, its gasket is perished, it's "sweating" oil, or you hear a loud hissing sound when unscrewing it, these are classic signs of wear. A leaking or clogged cap leads to oil contamination, and a pressure build-up in the tank can "push out" the seals in cylinders or the pump.
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Integrated Breather
Protects system seals
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Locking with a Key
Security and protection
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Durable Polymer
Weather resistant
The accuracy and quality of materials guarantee long and trouble-free use without the need for frequent replacement.
The cap is fully adapted to work with the original filler neck, ensuring a consistent and tight seal.
The GX-AFTER brand is a proven and safe alternative that offers quality comparable to original parts at a much better price.
Before fitting the new cap, carefully clean the mating surface on the filler neck of any oil and dirt residue.
While replacing the cap, check the condition of the mesh strainer inside the filler neck. If it is damaged or clogged, replace it.
The cap is made of plastic. It should only be tightened by hand until resistance is felt.
Check that the small breather hole in the cap is not clogged with mud or dust. Keeping it clear is crucial for the life of the seals in the entire hydraulic system.
Answer: Yes, it is very likely. A worn or hardened gasket in the cap is the most common cause of leaks and the smell of oil.
Question: Why do I hear a loud hiss when I unscrew the cap?Answer: This is a classic symptom of a clogged breather in the cap. Excess pressure builds up in the tank and is released violently upon opening. The cap should be replaced as soon as possible to avoid damaging the system's seals.
Question: Are the keys unique?Answer: Keys for this type of cap are usually standardized for a given model, which is a convenience if one of them is lost.
If you are unsure whether the selected product is suitable for your machine, contact us and we will help you choose the right part and provide practical advice in minutes.
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Musiałam na szybko kupić przekładkę hamulcową dla męża i muszę przyznać, że jestem pod wrażeniem obsługi sklepu, kupiłam przedmiot i otrzymałam go na drugi dzień. Przesyłkę to macie bardzo szybką ? dzięki wielkie.







Hydraulic oil filler cap suitable for JCB machines, including: 2CX, 3CX, 4CX, Telehandlers.
Two keys included.

















