Renewing this item along with during the refurbishment process will help protect the part you are re-fitting.
Old anti-vibe rubbers are not recommended with new fittings!
For all the rubber consumables you need during the course of the restoration check the online parts-list fiche. This may help you specify a larger multiple order saving money on shipping costs and time later in the workshop when you find you are without an important part to complete your refurbishment?
Re-using old anti vibration components is not recommended, and of course where visible will spoil the appearance! Ensure ALL the anti-vibration rubbers required are specified in one order to save you money on shipping costs