I have a set of valve cover gaskets to fit the M60 and M62 V8 engines - all versions of the 840Ci. These are the gaskets that often leak oil, allowing the spark plug holes to fill with oil and ultimately resulting in misfiring.
They are brand new in the sealed packet, I bought them as preventative maintenance but sold the car before getting round to fitting them. They are genuine Febi Bilstein parts (basically BMW OEM) and have the part numbers
Cylinder 1-4 kit: Febi 12396 / BMW 11 12 9 069 871
Cylinder 5-8 kit: Febi 12397 / BMW 11 12 9 069 872
These cost around £80 from BMW, and even Euro Car Parts charge around £65 for both gasket sets. I'm willing to accept £30 posted for them, no offers.
I can take photos if required, although there's not much exciting to see!
Thanks.