This is a throttle slide guide or jet block as it is sometimes called, for a Mikuni BDST 38 carburetor as used on, amongst others, the Yamaha FZR1000 Exup.
This product is priced and sold as a single unit.
Required quantity per carburettor: 1
Replaces Mikuni part number: N213003
Yamaha part number: 3GM-1411E-00
This is Our Part Number: KSN213003