4PCS 

This is a brand new diaphragm fit for Model no.:

Specifications: 

Overall Diaphragm Diameter: 5" (127 mm)

Voice Coil Diameter: 3.91" (99.2 mm)

Nominal Impedance: 8ohms

DC resistance : 6-9Ohm

Size error:+/- 1.5mm

Here is a list of the driver part #'s:

44XT, 44T models and more.