difference between U joint 75832A2, and 75832A3

[BryonB]

I have a pre alpha outdrive MC1 with ring hole. Serial 4443838. She needs new U joints, trying to figure out if there is a difference between an 75832A2 and A3? .

 

[alldodge]

The A2 and A3 is a way of Merc keeping track of who they purchased parts from (different manufactures). The latest part number is 75832T1