600/610 Performance Maintenance Kit Back Catalog number: CTS-10985 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21145 Inlet Check Valve Price on request CTS-10989 Face Seals, 4/pk Price on request 11-2401 Check Valve Cartridge, Ceramic Ball & Seat, 2/pk Price on request