“Removed the steam boiler heating element from my La Marzocco Linea classic 1GR using a 42mm wrench after slitting the old heat shinrk with a scalpel and peeling it off. Electrical nuts are 10mm, a drop of oil help them come off. Replacement heating element obtained from ordering this part required a 38mm wrench to tighten. Orange book recommended installing with threads wrapped in teflon tape. Used the fiber gasket P_327. After confirming no leaks after a day at operating temperature/pressure, I slide the tubing in place and applied heat to shrink. All work inside machine performed with power plug removed from wall socket. Exact replacement part.”