Injector pump drive shaft seal

Hi there,
Any one know the part number of the Injector pump drive shaft seal ?
Mine is leaking diesel, inside the timing case
(I have a lucas cav pump) I spoke to some guy at a diesel shop in
Middlesex and he asked if I wanted 20 or 22 mm ? does anyone know the correct size I require?

:welcome2: It might help if you gave us a few more details. Is it on a Series or a Fender? What year, etc.?

OK so we presume that it's on a 2.5 N/A because you've posted on here, but
:nopics:

OSD

sorry, yes it is on a 2.5 na engine in a B-plate 110,

Ring Auto Diesel 0191 276 0826 and give them as much detail as you can.

If anyone can help, they can!

Good luck.

Thanks for that, I gave them a call and they knew the exact part I was talking about, and were very helpful.

I subsequently found out:

The exact delphi part number is 7174-856.

and they are available on ebay for under £4