As part of my 75K mile refurbishment I decided to replace the fan with one I purchased about a year ago from tills.de. I was tempted just to leave the original in as it was working and there was no reason to replace it other than age and reputation.
When I removed the OEM Bosch it spun and looked OK but it does have a squeak which I take as worn bushing. Possibly a potential failure?
The tills.de Spal fan comes attached to an aluminum bracket, has the proper connector and includes a new rubber grommet and attachment fasteners. A quality setup.
So what does that "17" plastic marker on the radiator signify?