Is it possible that there is a number twist here?
I find 2M5T-14B296-AC (as example on ebay) fitting the description.

 

Unfortunately I cant help on this as I had my mechanic do it while it was already at the shop. He did mention that the design was stupid and he had to loosen off a bunch of dash bolts to create clearance (when they could have designed it as a bolt instead of a stud)

2M5T-14B296-AC seems to be the part number - i got it from ebay for 53$ and it was listed under 2006-2018 Aston Martin Vantage yaw sensor module.

 

Be careful with ebay parts. I've had to return multiple electronic parts due to flood damage. If the seller lists a VIN I'll always look it up first to find the reason for the vehicle salvage. For something as difficult to reach as the yaw sensor it would be awful to have to replace twice.