ACQUITY I-Class SM-FTN Performance Maint. Kit,2890 Back Catalog number: CTS-21240 Availability: In the manufacturer's stock Price on request - + Recommended CTS-A11133 Tube Assembly, Transducer to Check Valve Price on request CTS-10693 Plunger Seal Price on request 11-4181 Seal Wash (0.0787 ID, Fixed), 2/pk Price on request