Fuel Injection Pump Red Oil Filler Cap

[hansr433]

I stupidly put my red plastic cap on the valve cover, promptly forgot about it and drove off.  I retraced my short route but did not find it.  Is is also not visible anywhere in the engine compartment.  Does someone have a source (European preferably) for a replacement cap?

[PeterPortugal]

I think this might be it....

https://mercedes-classic-parts.com/product/filter-injectionpump-v-nr-0000750932-bosch-nr-0457104001-nos/?lang=en

[hansr433]

Thank you Peter.  My cap looked simpler and did not incorporate a filter, as in the link you posted.  At any rate, I reached out to Colin and he had a spare in stock, which he is mailing to me.