[400sbctruck]

Hello, first post nice to meet you.

Ive had really poor luck out of most tensioner and idler pullies available.
Seems they are adequate, however use chinese bearings. Most bearings used there are sealed and non lubed.

Autozone, advance -niether has adequate parts if you are looking for quality.
Go with Gates brand, to my knowledge as of a few yrs back all bearings were federal mogul. Gates brand is in oreillys, napa, and carquest. Belts too.

I spent a long time in parts and many more years bolting them on.
Just what i would look for/ hope it helps.