Pearl Black 2004 MG ZT260SE mark 1, V8 for sale

[jeff turbo]

Just noticed, "121k". Are you sure that the PCV valve has been changed at 90k according to the service schedule?
So called "experts" say don't bother, BUT Ford say 80k, MGR 90k, and my car was 105k from the prior replacement when it failed, sticking open or closed according to how it felt and creating very random weak-mixture misfiring. Both the PCV valve and the pipe, which rots and leaks air, are available from RockAuto and quite reasonably priced. ... just my two-penneth!

(Edit) Motocraft numbers for RockAuto:
PCV valve: EV-261 (2C5Z-6A666-AA)
Hose to Throttle-body: KCV-240 (2L2Z-6A664-FA)

David

I changed the plugs and the misfire stopped.
As I bought the car on 109,000 I have no idea if anything else had been changed prior to my purchase of it.
What part is the PCV valve ?