Review on uxcell Knock Sensor 22060-AA070: Enhanced Replacement for 1999-2000 Subaru Legacy Impreza Forester & 1999-2001 Subaru Outback by Mike Ogunlana

First, the price is incredible. Or, more likely, the price is reasonable and other brands that cost $60-80 are heavily inflated! ;) It also works great. The CEL that came and went is gone now and the engine runs noticeably better. In fact, it will feel at its best in a few years (I wonder how long my old knock sensor has been bad, but not bad enough to throw out the CEL). Replacing is extremely easy if you can handle a single screw. and a plug, and plug them back in. A socket extender is a must (I used a 24") and small hands will probably help. Unfortunately I only had one of these parts so my hands got a little scratchy. :)