Part Type: Engine Water Pump Pulley. Notes: 6.1 In. Application Notes: Engine: 7.3LL V8;. 2003 Ford E-450 Super Duty Engine: 7.3LL V8; 6.1 In. Oversized Pulley: No. Manufacturer: Dorman. To confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in theCompatibility Table.