What I thought was a leaky rocker cover gasket turns out to be residual oil from a crack in my oil filler neck. I've already searched Atlantic British and Rovers North and the closest thing I've found is this on RN:
Part#: RNM094

and that doesn't seem to be correct, either.

I'm dreading the call to my local Rover dealership to find a part I don't have a number for... anyone have suggestions on where to find the correct one?

 

I would try this.
http://cgi.ebay.com/ebaymotors/Land-...item4aa50cb33e

I also have one from a 2004, but I would rather not part with it for now.

 

I'm looking for a FILLER NECK, not a dipstick... the filler neck is what the oil cap connects to.

 

Try these guys...

http://www.roverguy.com/ - Will Tillery

http://www.ptschram.com/ - PT

Sure bet that one of the 2 will have one lying around for sale.

 

Clean your existing neck and use some JB Weld to seal that crack for ever.

 

Sounds like a plan... $4.00 and an excuse to go to the hardware store is better than $35 and waiting for delivery.