This grey coupling nut screw connector can be found at the ends of the A (AirJet Blower) pipe of your Lay-Z-Spa or Saluspa AirJet pump.  The Coupling Nut compresses a rubber gasket (included) to form a water and air tight seal.
The following steps should assist you in replacing the connector:
Remove the existing coupling nut (undo screws either side to release)
Remove the existing stepped rubber gasket
Refit the coupling nut with the supplied replacement stepped gasket
Please be aware that this part is only compatible with AirJet pumps, both original Egg and newer Cube design and the older style HydroJet pumps.
Tracked Shipping to UK addresses is included in the 'Buy it Now' price, outside of the UK an additional postage charge applies.
The Spa Workshop Ltd is based on the edge of the New Forest near Southampton in the United Kingdom.  We specialise in the service and repair of Bestway Lay-Z-Spa AirJet and HydroJet pumps.  If we can be of assistance in resolving your spa pump, please do get in touch for assistance.
All items are shipped Monday to Friday.  We aim to provide all of our customers with excellent products and service, if you experience any issues please contact us directly via the eBay Messaging Centre, we are always happy to help.