Tension ring 51mm - replacement part for KM portafilter head Delonghi

• Secure hold for the basket: The ring provides the necessary clamping tension in the portafilter head, ensuring that the basket doesn't fall out when knocking out the coffee grounds.

• Exact fit (51mm): Custom-made for KM portafilter heads (bottomless and with 2-spout outlet) for DeLonghi machines.

• Robust spring steel: Resistant to moisture, heat, and continuous mechanical stress from installation and removal.

• Quick replacement: Can be inserted into the inner groove of the portafilter head in seconds without special tools.

When should you replace the retention ring?

There are two typical scenarios for this replacement purchase:

1. The classic during cleaning: You've removed the basket for thorough cleaning, rinsed out the portafilter head, and the ring has disappeared unnoticed into the drain.

2. Loss of tension: If you install and remove your basket very frequently, the steel can experience slight fatigue over time. You'll notice this when the basket flies out together with the coffee puck when you knock it against the knock box.

Compatibility: Does this retention ring fit your portafilter?

This retention ring was developed as a direct replacement part for the following products in our range:

• KM bottomless portafilter head (51mm, suitable for DeLonghi Dedica etc.)

• KM portafilter head with 2-spout outlet (51mm, suitable for DeLonghi Dedica etc.)

Important note about third-party manufacturers: Although the ring has a nominal diameter of 51mm, the depth and shape of the retaining groove on original DeLonghi portafilters or accessories from other brands are often slightly different. We can therefore guarantee precise fit only for our own KM portafilter heads.