Jeep T-86AA Transmission Parts for 1966-1971 CJ-5 and CJ-6 with 225ci. V6 Engines.
The T86 is very similar in appearance and build to the Jeep T90, and these gearboxes can be confused with each other on first glance. The T86 will typically be cast with "T86AA" on its case. Also, one can confirm it as a T86 in that all gears are helically cut, including the first mainshaft gear.