Caterpillar (CAT)-style premium aftermarket wear plate. Part reference 161-8573. Application/reference: Bolt-On Rear / Bottom Wear Plate 966. Replaceable protection plate for high-wear bucket, blade or understructure surfaces. Mounting: 1-in plow bolt; confirm bolt length and the exact hole pattern before installation. Brand reference: Caterpillar. PETRAX premium aftermarket replacement; OEM names and part numbers are used for identification only. This item fits only the specified system and matching mounting dimensions.