I've been reading other posts and have been seeing that certain brands of sensors and plugs/wires should and shouldn't be used. I just changed my upstream o2 on my '00 ssei with a Delphi. Is Delphi acceptable? I haven't driven enough to determine if my mileage has changed. I was thinking that in the past Delphi was partnered with Delco....meaning that possibly it would be acceptable.

I would appreciate any input anyone has about ya or na on using a Delphi o2.

i remember the parts guy telling me delphi was manufactured by the same people as another major brand, but i cant remember if it was delco.. makes sense though

Delphi is GM original equipment.

Delco Remy became Delphi after it was no longer under GM ownership.