After you install the new windshield or the new radiator, it's unlikely you'll ever have to do that again. There are other parts that need to be replaced from time to time, especially on a car that's driven a lot. A couple of obvious examples are transmission band linings and emergency brake linings. What else belongs on the list of parts that need occasional replacement?
Timer, spark plugs and ignition coils.
Ron the Coilman
Front wheel bearings, Light bulbs & felt oil seals
Almost forgot (mine broke last week) Fan Belt
Rear Wheel Bearing Sleeves.
One list to get it all in one place:
Rear End Oil
Grease Cup Grease (add)
Emergency Brake Lining
What have I overlooked? I left things like timing gear, babbitt, camshaft, etc. because they are typically replaced either due to a failure or in an overhaul, not "from time to time".
Sadly, the drivers get replace too often, I hope your car does not need such a replacement.
Passengers. When they *itch about your car
Babbitt in several places
Ring gear and pinion
And rear axle shafts.
Spring shackles and spindle bolts, if you're like me and don't oil them regularly.
Rings and glands.
You need to define "Replace from time to time"
I see things listed above that one would not need to be replaced in years or up even a life time.
To add to Hal's...also the spindle bolt BUSHINGS...I think they wear quicker and worse than the bolts do actually. I oil mine a whole lot!