Review on Gates 38274 Belt Tensioner Assembly by Tony Addis

Exact replacement for my 2007 Ford Expedition EL Limited (5.4L 3V v8). While only the bearing failed, I decided to replace the entire assembly. A few notes: 1. The end of the idler pulley may not have lateral play and may not rotate properly, but the bearing may still be badly cracked. The pulley should not rotate indefinitely when you turn it by hand. It must have low rolling resistance to function properly (but must be smooth).3. You can easily replace the bearing in the pulley, but it's very, very, very tight there. You can't bring a camp back to life with WD 40. The bearing is $4, the pulley and bearing is $12-15, and the entire tensioner with pulley and bearing is $25-30.