I have a Gen-X external Pump that is over 20+ years old and still running today. I have dressed this area along time ago. I bought a new spare in 2006 and have yet to use it. PS: Sump is the same age as well.(modded it since pic.)
I have a mid 90s model eheim still chugging away on my calcium reactor. Come to think of it, all of my Tunze pumps are a good decade plus old as well. Got them in 09. Some magnets mounts and power supplies crapped out but not the pumps.