The diffuser is the rear white plastic part of the Waterway jet. Important: Regarding the Powerstorm diffusers, depending how old your jet is you may find that the lip on your existing jet face is to large to fit into the slot on the newly designed diffuser and therefore you may have to carefully cut down this lip to fit or alternatively replace the complete jet.

Brand: Waterways
Type: Hot Tub Jet Diffuser
Set Includes: 5
Frame Material: Plastic
Material: Plastic
Model: Master Spas
MPN: 218-5140
Item Diameter: 2.2
Item Length: 6.5
Item Width: 2.4
Features: Diffuser
Lining Material: Plastic
Water Type: All Water Types
Manufacturer Warranty: 12 months