Well I am in the process of ripping apart the engine in my 2001 xkr and my one idler pulley was a bit suspect, definitely binding. I see that there appear to be two idler pulleys part #GATES 38028


I figured while I am at it I want to replace all of them. Changing bearings isn't in the job description as sourcing them on a Sunday may not happen. But I can find pulleys for sure. The above pulleys are available and its my understanding that's for the two stationary idler pulleys. What part numbers for the other ones? Much Appreciated!!! I don't want to have to do this again anytime soon

 

There is only one idler pulley on the engine. The other one is called a belt tensioner. Attached is an outline of the arrangement. Pc 7 is the idler and 8 is the tensioner.
You will probably won't be able to find an aftermarket tensioner. Most likely OEM or wrecking yard.
the part numbers are based on VIN number.
. Idler pulley
( to VIN 042775) NCA2221AA 1
(A00083 to A30644) AJ82266 1
(from VIN A30645) C2C37064 1

Drive belt tensioner
(Up to VIN 042775) NCA7739AC 1
(A00083 to A30644) NCA7739AD 1
( to VIN A39972) C2S11662 1
(from A39973 to A42347) AJ88003 1
(from A42348) C2S36146 1

 

Me personally have used the Dayco 89016 for both the idler and tensioner pulley. When you have the tensioner assembly off, (if memory serves me correct) the bolt that holds the pulley to the tensioner assembly is reverse threads.

 

Try this thread, great write up.


https://www.jaguarforums.com/forum/x...lt-how-102387/


Wayne

 

Being its supercharged(XKR) there is definitely more than two pulleys. Ill take another look out there. The gates # I had posted was based off of a search here. I basically want to replace all of them. Im not familiar with the difference between the xk and xkr