How can I change 'SKU' to 'P/N' on my products page?

[SamC-WT]

Hey all

so as you can e from my image the SKU is in orange which is how i want it but im trying to work out how to change “SKU” to “P/N”

i am using the Avenue theme

website link

https://wiretechnologies.myshopify.com/collections/transceivers/products/juniper-transceiver-10g-er-sfp-40km-1310nm-ex-sfp-10ge-er40-wr?variant=45461312274736