Mine is the Delco Switch, which I was told was the better version to have based on available of replacements.
Delco is OEM and OEM is not just better for our cars, but all cars these days. You'd be surprised how many aftermarket parts are faulty right out of the box. Especially in the world of computer sensors, CKP, CMP, TPS etc...If you can get OEM you won't be doing the job twice.
