Pleatco PCST120 Hot Tub Filter


Genuine Pleatco PCST120-M hot tub filter.  This filter is for Coast Spas.  Pleatco brand filters are the best in the industry and made with the best materials.  All Pleatco Filters feature Pleatco's FREE FLOW CORES which deliver better water flow rates and enhance filtration. This efficiency reduces wear and tear on the pump, uses less energy, and provides longer life to the Filter. Proper flow is important as many home owners switch to energy efficient multiple and variable speed pumps.

Pleatco PCST120-M filter replaces both the Unicel C-5351 and the Filbur FC-2976.


  • FREE FLOW CORES which deliver better water flow and enhanced filtration
  • highly efficient, spun bonded polyester filter Media
  • break-resistant bands keep the pleats clearly defined and evenly separated for increased water flow
  • Antimicrobial End-caps
  • built to withstand chlorine degradation
  • Microban Coating - Antimicrobial infused agent inhibits the growth of microbes, mold, bacteria and mildew on the cartridge for the life of the filter


  • Outer Diameter: 5 3/8" (137mm)
  • Length: 30 1/8" (765mm)
  • Top Hole: 2 1/8" (54mm)
  • Bottom Hole: 2 1/8" (54mm)
  • Sqaur Feet: 120
  • Replaces Unicel C-5351
  • Replaces Filbur FC-2976
  • Part no: PCST120-M

Manufacturer (OEM):

Coast Spas, Waterway Plastics

OEM Part Numbers:

  • 817-0147