99 subaru legacy abs

i just got a subaru legacy outback my dads working on it and says i need a abs right rear sensor the photo is whats in the car now i can not find the same looking part is it called something else its the only thing left we need to fix for the light to go out so i can pass it through inspection any help would be amazing my cousin tried using his car computer to see what was wrong but could not get into the system as well.

thanks for the help. below is the photo of the part