Universal Spa Filter S C-5374/PLBS75/DF75

Compare the dimensions of your old filter with these specifications:
– Length: 270 mm (10.63 inch)
– Diameter: 148 mm (5.83 inch)
– Connection:
 • Top side: closed with handle
 • Bottom side: coarse external thread (MPT), 1.5 inch (± 38 mm outer diameter)

This filter fits if your old filter has the number C-5374, PLBS75, or DF75. It is widely used in medium-sized spas from brands such as Passion Spas and similar brands.

Not quite sure? Send us a photo or the dimensions of your current filter – we are happy to help you further.

On average, you replace a spa filter every 2 to 3 months for optimal water quality and proper functioning of your spa. Even with regular cleaning, a filter eventually becomes saturated with dirt, oils, and lime.

How do you know it's time to replace your filter?

Watch for the following signs:
• The filter remains dirty despite thorough cleaning
• The material is damaged (tears, fraying, or deformation)
• The water remains cloudy or smells unpleasant
• The water flow decreases
• Your pump makes more noise or works harder than usual

If you use your spa often or with multiple people, it may be necessary to replace the filter more often than every 3 months. For those who want certainty, it's smart to keep a spare filter in stock and regularly alternate.