ITEM NAME:Outboard Water Pump Impeller Repair Replacement for Yamaha F4 4hp 4-Stroke Description: 100% Brand New and High Quanlity Marine Grade Quality Replacement Parts for Yamaha Outboard Motors. It is recommended for all marine engines, that the water pump is inspected and the impeller is replaced annually or every 100hours of use, whichever soonest. Replaces : 6E0-44352-00-00 for Yamaha P/N Interchange part numbers used for reference only Specification: Water pump impeller for Yamaha Outboard Motors: F4 4-Stroke 4hp 1999 - 2009 4hp 2-Stroke 1984 – 1999 5hp 2-Stroke 1984 – 2002 Impeller Dimensions: No. : 6 Internal Diameter: 11.00mm External Diameter: 40.00mm Depth: 12.60mm Package Includes: 1 Piece Water Pump Impeller SKU: DMO0011900967002835.F4 4-Stroke 4hp 1999 - 2009. 4hp 2-Stroke 1984 – 1999. Water pump impeller for Yamaha Outboard Motors 1 Piece Water Pump Impeller. Replaces : 6E0-44352-00-00 for Yamaha P/N. Interchange part numbers used for reference only.