Pentair Spa/Pool Replacement Filter Cartridge (R173435)

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Pentair Spa/Pool Replacement Filter Cartridge (R173435) is a replacement spa or pool filter cartridge from Pentair Pool Products designed to help restore clean water flow through c ompatible filtration systems. It is suited for maintenance replacements where the cartridge model, cross-reference number, length, diameter, end-cap style, and core design need to match the existing filter. Use part number R173435 when matching this item to an existing component, owner’s manual, parts diagram, or service record. A fresh cartridge can improve circulation, reduce strain on the pump, and help keep water clearer when paired with proper cleaning and chemistry.Before ordering, compare all printed cartridge codes and physical dimensions to the filter being replaced. Many cartridges look similar, but small differences in end caps, thread style, opening size, or overall length can affect fit. Replace worn, collapsed, cracked, or heavily soiled cartridges promptly to maintain efficient filtration. Genuine or listed Pentair Pool Products replacement option for Filters applications Compare cartridge length, diameter, end caps, core, and cross-reference numbers before ordering Useful for repair, rebuild, routine maintenance, or replacement service Compare size, voltage, color, connection type, and model details before ordering Professional installation is recommended whenever electrical, gas, pressure, or code-sensitive work is involved Show more