Unicel 5CH-402 Replacement Spa Filter Cartridge for Del Sol, Sundance & Jacuzzi Premium Spas | 40 Sq. Ft. | 6540-723 C8311 clean the shaft groove thoroughly

clean the shaft groove thoroughly and apply a thin coat of silicone-based lubricant to seat the O-ring evenly and extend its service life

The Unicel 5CH-402 is a 5CH Series 40 sq

and washers UPC 610377054584 Fits Into

The Unicel C-9485 is a 9000 Series 85 sq

this cartridge maximizes filtration surface area to capture fine particulates and maintain crystal-clear water — cycle after cycle

Unicel 5CH-402 Replacement Spa Filter Cartridge for Del Sol, Sundance & Jacuzzi Premium Spas | 40 Sq. Ft. | 6540-723 C8311 clean the shaft groove thoroughlyThe Unicel 5CH 402 is a 5CH Series 40 sq. ft. replacement spa filter cartridge engineered for Del Sol, Sundance, and Jacuzzi Premium spa models originally equipped with OEM part number 6540 723. With 204 pleats of 3 oz. Reemay 2033 filtration media and a 2" male thread (MPT) bottom connection, it delivers reliable filtration performance as a direct cross reference replacement. IMPORTANT: Dimensional Difference vs. OEM Original Per Unicel's cross