Loking for an MPEM for a 99 GTX 951

[husky]

Hello guys i need an MPEM with key for 99 GTX 951.
Looking to buy a used one, new part# is 278 001 525 which replaces old part #278 001 398. If someone knows if they will be interchangeable with some other models ?
If you have one for sale

supermoto570@abv.bg