This is a NEW aftermarket AL38234 Brake Disk fits JD models 2040 2240 2150 2350 2550 2155 2355 2555. As some of these models can be equipped with an optional HEAVY DUTY REAR AXLE YOU MUST MAKE SURE THIS IS THE CORRECT PART NUMBER (for your tractor) BEFORE ORDERING. We are a salvage yard selling used parts for JD farm and compact tractors & Gators.Green Spring Tractor