My MAF has the Bosch name inprinted on top of the plastic housing. Did GM put Bousch MAF's on stock?

 

Can't say for sure if the Bosch MAF was stock, but it would not suprise me. I know GM used genuine Bosch fuel injectors (and one other brand, the name escapes me right now) on the TPI motors. In V6 Fieros (no snickering, please!) they used a Holley throttle body which was clearly embossed where everyone could see it.

 

Yes, that was the stock MAF used by GM.

 

ok thanks guys