This is the 10-705-636 Rancilio version 4 OEM replacement boiler with heating element, gasket, and partial new wiring included. This boiler replaces the following Rancilio items:
33-111-010 – Silvia V1 Heating Element without boiler
20-102-943 – Silvia V2 Boiler with heating element welded 110 volts
20-102-945 – Silvia V2 Boiler with heating element welded 110 volts
10-705-396 – Silvia V3 Boiler with heating element welded 110 volts with conversion upgrade kit from V1 and V2
Per Rancilio, this boiler will fit version 1, 2 and 3 Rancilio Silvia espresso and cappuccino machines. You may need the Rancilio junction part #23-000256 for older machines.
You may also need new bolts part number 37-060-51.