If you replace the bearing remember to tell them if it is shielded or not, and if so how it is. See if you have an Applied Industrial Technologies in your area. You can get a good price usually on our bearings.

6301 2ZJEM (Metal Shielded on both sides)
6301 2RS (Rubber Shielded on both sides)

I believe those are primarly stocked in the SKF brand, but you could probably get them also in a Koyo which is a cheaper, but decent replacement.

Im not try to make a sells pitch, just trying to give ya some info to help you out if you decided to replace it.

'95 Eclipse RS (sold)
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'94 Plymouth Laser RS (sold)
'04 Audi A4 Quattro 1.8t (sold)
'08 Silverado LTZ (daily)