Replacing as many of the old parts as possible with new components on the hard-working oil pump assembly, when rebuilding the engine, is a sensible precaution - the last thing a newly refurbished engine requires is a weak supply flow of filtered, lubricating and (importantly) cooling oil?
Other items related to the lubrication system:
It is always worth checking carefully that the part number you specify is compatible with your model before placing you order, this helps avoid the frustration of ordering an incorrect part!
Add as many new spares to the same shopping cart as you wish, new Dowel pins 551A0408 and oil filter 160970008P for example, and still only pay the same single fixed price shipping cost.
Pro-workshop gasket sealant 08C70K0234M to complete the job like a professional.