This is a brand new mower idler pulley. The specs are as follows:

•  Flat Idler w/ flanges. Steel. Fits 48" decks, 2001 and later.
OD     3.060"
ID     3/8"

 Replaces part numbers
 
11634     ROTARY
177968     AYP
78-013     OREGON

Thanks for looking!!

B1AY47