4 1/2'' Diameter Wheel, 3/4'' Shaft4 1 2'' Diameter Wheel, 3 4'' Shaft 73R7220, RD 5 15298 0P, 38 00564 50 TYPE: Blower Wheel SHAFT SIZE: 3 4'' OVERALL DIAMETER: 4 1 2'' OVERALL LENGTH: 29'' Can be installed on the following vehicles: BUS BLUEBIRD BUS BUS IC CORP BUS BUS OSHKOSH BUS BUS THOMAS BUS BUS THOMAS BUS B2 BUS THOMAS BUS C2 BUS THOMAS BUS LT OEM Numbers 73R7220, RD 5 15298 0P, 38 00564 50 Specifications Product Condition: New 100% brand new and high quality. The product is the