American has 303 Boeing 737-800 aircraft in the all in the oasis configuration. The oasis project harmonized the fleet 737-800NG aircraft to match the seat count and interior of the 737MAX so passengers will have the same product and experience no matter which plane they fly on.

AA retired 1 older 737s. For the full list of retired 737s go to Boeing 737.

738D=738K after oasis/kodiak  3AG-3LB

738A=738R after oasis/kodiak "Advanced Performance" 3LC-3PX

The 738K/Rs all have Boeing Sky Interior, Boeing's Space Bins, and power ports/USB ports are at every seat.  All 737s are equipped with ViaSat satellite Wi-Fi.