I have an '03 XJR that's going under the knife this weekend, and I'm going to replace the accessory drive belt and supercharger belt at the same time, as they're looking a bit dried out & tired.

I have a really late VIN - F5xxxx IIRC. According to what I've seen, that means I should have the last iteration of the supercharger belt drive.

I just spoke to the Gaudin parts department, and they indicated I still needed to replace the belt, pulleys and tensioner all at once. Other places I've looked suggest I just need the belt, as I should already have the later drive.

Can anyone clarify what is needed, or how I might distinguish what I already have versus what I've been told to buy?

 

You just need the belts, you're correct to assume they're post update. If there are no plastic type pulleys (all metal) then just order the belts. Gates are good, but I tend to buy oem.

 

The British Jaguar site suggested my VIN would have a metal pulley and thus be the later system, but I will double check with a magnet.

I'm going to buy an OEM belt. Just keeps things simpler for now, and the OEM belts clearly last.

Thanks!

 

Yep, both pulleys are metal. Local dealer matched Gaudin's prices (which blew me away!), so I got a $55 belt instead of an $80 belt.