CMA Lever Group Piston whole-bean-bulk-grinder-burr-sets/bunn-coffee-grinder-parts If you're installing this on

If you're installing this on an older Silvia and the knob shaft rubs the front panel

so stock is limited

and soak the portafilters (Not the Handles

a basket that's too small for your dose is a common cause of pucks that overflow or channel at the rim

In that case you'll need both the newer base cover and the entire newer lower base to convert over

CMA Lever Group Piston whole-bean-bulk-grinder-burr-sets/bunn-coffee-grinder-parts If you're installing this onCMA lever group piston. Special order item. Typically requires 6 10 business days for processing prior to shipping. Specifications: CMA OEM part #: 4627300 (27300) Compatibility: CMA lever group models Installation: Direct replacement in lever group Recommended for qualified technician.