Retaining 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, preventing the basket from falling out when knocking out the used coffee grounds.

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

• Durable spring steel: Resistant to moisture, heat, and continuous mechanical stress during 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 retaining ring?

There are two typical scenarios for this replacement purchase:

1. The classic cleaning scenario: You removed the basket for thorough cleaning, rinsed the portafilter, and the ring disappeared unnoticed down the drain.

2. Loss of tension: If you frequently install and remove your basket, the steel can gradually fatigue over time. This becomes noticeable when the basket flies out along with the coffee puck when tapped against the knock box.

Compatibility: Does this retaining ring fit your portafilter?

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

• KM bottomless portafilter head (51mm, compatible with DeLonghi Dedica etc.)

• KM portafilter head with dual spout (51mm, compatible with DeLonghi Dedica etc.)

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