Water Pump Seal

The mechanical seal has its seat pressed into the water pump shaft to form the seal and water pump as a single unit. With this design, the water pump cannot be disassembled. See Fig 1 .

Fig 1: Identifying Water Pump & Thermostat

Courtesy of SUBARU OF AMERICA, INC.

Fig 2: Cross-Section View Of Water Pump Seal

Courtesy of SUBARU OF AMERICA, INC.