I have a friend who has an E55 with ASP pulley, the size which i measured is from outside 181mm, we need a replacement belt, any help where i can get one and the part nb please.
Thanks.

 

gates K080514 -

 

yup 514 is the correct size for a 180

 

Guys for the E55 forum when you say 168, 172, 175, 180 mm do you mean inside or outside pulley measurement, cause i measured it from outside it is 181mm and inside like 175mm. where can i get this belt?
BTW the pulley generates a lot of heat specially in hot summer weather where i noticed yesterday from my datalogger that the ECU is retarding timing from like -20 to -5,-7 and the IAT are rising from 120-130F to more than 200F(stock cooling in that car, no ic pump failure) from first to fourth gear round where the weather here is 94F and high humidity.

 

Rockauto is where I order mine. Amazon also. There is also an HD version but online sources appear to be back ordered. Still waiting on mine after one month.