i bought a RS steering wheel with a hub that was meant to be for a sierra cosworth but didnt fit. The numbers on the casting is (black painted part) 5012678 behind the horn part H84 SX-3K699-AA i need rid of it so if anyone can give me a clue what they go for as well would be great help thanks.

 

Put the numbers in google !!
You never know , it may come up with what it's for !

Sierra Cosworth and mk 3/4 escort boss are the same