Retaining Ring 51mm: Replacement Part for KM Portafilter Head Delonghi

• Precise Fit (51mm): Custom-designed for the KM portafilter heads (bottomless and with dual spout) for DeLonghi machines.
• Secure Hold for the Filter Basket: The ring provides the necessary clamping tension in the portafilter to keep the filter basket from falling out when knocking out the coffee grounds.
• 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 Retaining Ring?

There are two typical scenarios for this replacement purchase:

1. The Classic During Cleaning: You removed the filter basket for thorough cleaning, rinsed out the portafilter, and the ring has disappeared.

2. Loss of Tension: If you frequently install and remove your filter basket, the steel can gradually fatigue over time. You'll notice this when the filter basket flies out together with the coffee puck when tapping against the knock box (Knockbox).

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 Portafilter Head Bottomless (51mm, compatible with DeLonghi Dedica etc.)

• KM Portafilter Head with Dual Spout (51mm, compatible with 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 and function only for our own KM portafilter heads.