Question about oxygen sensors

[ebc]

Greetings,

I am thinking of ordering a spare set of O2 sensors for my 2001 Silverado with the 5.3 Vortec. Some thread in a forum mentioned that only AC Delco sensors should be used in these engines. Any thoughts on this theory?

Thanks,

ebc

[MS3DALE]

I would use nothing but AC-Delco but then again I work in a GM dealership and get a great price on them,I have heard good things about Bosch's O2 sensors also.

[JCedar]

Could someone give the part # for the O2 Sensors on a 99 GMC Sierra 5.3 from AC Delco, or if someone knows where you can get a good priced O2 sensor that really works.