[xaqfox]

That winglet design is not specific to the MAX aircraft. That CFM engine is also used on Airbus NEO.

[icegreentea2]

I had not seen the split winglet on non-MAX 737s. I stand corrected. I did mean the CFM engine as a distinguisher between 737 models, not as a identifying feature for 737 MAX vs all other 2 engine smallish jets.