Thanks for suggestions guys. If anyone needs one of these, I ended up having to buy a new sump. Found one from a company called Vanmatic. Looks to be direct from ZF, no Audi part numbers or stamps on the pan but was all I could find! https://www.vanmatic.com/parts/hp/zf5hp24a--sump-pan-audi--oem--56...
Thanks guys, I've messaged a few of breakers on ebay/facebook, seems most are only sold with the gearbox. If anyone hears of/has one going I would be very grateful!
Can anyone help me with where to buy a new gearbox sump pan for my C5 RS6. My gearbox went into limp mode, checked underneath and looks like the sump has taken a knock and is leaking. I'm hoping a new sump and refill of fluid will resolve my issue. I was told that as the gearbox is "sealed for life"...