Blade is serviced separately. The fan that is used with this motor has 5 blades for most applications. Motor housing diameter = approx. 75mm (3"). This is the fan motor that is controlled by the coolant temp thermo-fan switch and not the fan motor that is controlled by the air cond.
The fan that is used with this motor has 4 blades for most applications. The motor housing diameter = approx. 100mm (4"). As an alternative use fan assembly (see additional catalog entries in the A/C Condenser Fan Motor category for availability).