Rear engine cover with sealant for the MF-4 tractor. The rear seal housing is complete replacement index: 37513851, B111258 Application: Ursus Massey Ferguson 4512, 4514, 5312, 5314, 5714, 6012, 6014The price per unit is for one piece or one running meter (depending on the item in the advertisement). You can buy one piece or one meter of the item even though it is stated in the advertisement that it is packed collectively (we will complete the packaging for you and send as much as you order).