599 MAF sensors

So have been getting some erroneous codes here and there related to the MAF's. I've been talking with my mechanic and figure that I most likely will need to replace them next service. So been looking at parts, but its confusing:

1. Genuine Ferrari part is like $800 to $1500 ea. depending on where you get it
2. Maserati parts are like $300 ea.
3. Or do you just get the sensor and replace that? $75 - 150 each?

So can you just swap out the sensor? or do you need the whole plastic "tube"?

 

No link that is coming next. I talked to Ron and he agrees. Its just weird the pricing differences... My fear is what is Chinese crap vs. Bosch reality....