UPD pully bearing locked up on me recently. About 20K miles on them. Went back to OEM.

 

about similar mileage i got out of my pulley bearings. the NTN bearings I replaced them with haven't hit 20k yet, but are still rolling smooooooooth.

 

Thank you so much Hachiroku for your reply! After much effort and string pulling I was able to obtain a recommendation. It would appear that SFK 203sffst-hyb#1-h701 would be the best recommendation for my Weistec pulleys which use 7 of these size 40mmX12m,mX17mm bearings. The problem now is that these bearings appear to be unobtanium! I have not been able to source them anywhere: I would be most grateful for suggestions and leads on where to look for them.

Best,

 

In the five years I've owned mine, I've been through 3 belts and around two or three broken pulleys. I have used three different makes of belt also, dayco, conti and now on a gates.

I just think this a common issue with these engines and no matter what belt or pulleys you use it will still fail.
What I do now is to just change the belt every six months as its a 30 min job, I can tell when it's gonna need to be changed soon as I notice small pieces of rubber around the engine bay.

What I did also though is to get rid of the plastic thermostat connector for the overflow pipe to a brass one tapped into the thermostat housing as this is prone to breaking when the belt fails, I use febi pulleys also.
​​

 

what is the RPM spec of that bearing? i can't seem to find it online.