The carrier number is either 3697701 or 5697701. The side gear is 1 1/4" wide where the gear shaft sits in the carrier. From the tip of one tooth the the opposite tooth is about 3 3/4". Laying it flat on the teeth it is about 1 5/8" wide. I could not see any distinguishing number on it. I just need one please. Appreciate whatever you can do.