La Pavoni Lever Brass Boiler to Base Ring ø 80.4mm - 31104704 From  £51.00

The Espresso Shop had this part available at basically 1/2 of the other places I could find on the web. Quick service also! Very happy customer!

Had a problem finding this part (fine threads) in Canada. Great cusotmer service from the Espresso shop and fast delivery.

Very sturdy replacement to the original plastic ring that broke on my Gagia machine.

It’s a replacement part that does exactly what I purchased it to do.
Tightens up with an oil filter wrench.

replaced the original plastic part as I was giving the machine a complete overhaul existing parts fitted
back in place no problem, you need a tool to fit it made mine! all the parts I ordered are great I now have a new coffee maker, roll on the next 20 years.

Apart from it being EXTREMELY tight to thread this on. (I thought I had cross threaded it at first, and I even checked the thread pitch to make sure it was right) it's much better than the plaid nut that was originally on my gaggia g106