THIS PRODUCT IS OBSOLETE AND NO LONGER MANUFACTURED BY WATERWAY. 

The recommended replacement Waterway 4 Hp 56Y Frame can be FOUND HERE and is also manufactured by Waterway.

The Waterway 310-2200 Impeller is an excellent choice for pool and spa owners looking to upgrade their pumps. Its closed-face design provides efficient pumping, while its 4 hp rating offers optimal performance with minimal energy consumption. Installing the impeller requires a 4 hp (or greater) thru bolt motor. The Waterway 310-2200 Impeller is an essential component of your pool and spa setup. The shaft seal sold separately.

• Impeller Type - Closed Face
• HP Rating - 4 hp
• Impeller Diameter OD - 3-5/8"
• Vane Width ID - 7/8"
• Eye Diameter OD - 2-5/8"
• Eye Length - 5/8"
• Impeller Width OD - 1-1/16"
• Shaft Length - 1-1/16"
• Shaft Diameter OD - 7/16"
• Pump Application - Viper

Fitment guidelines:
For use with Viper Wet End

Additional information:
Alternate Part Numbers - 35-270-1740, WWP-85-2200, WW3102200, 310-0140