Cyclone, BGI4L Gasket Back Catalog number: 811-9927-04 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800519 Multi-Flow Module, Blue, GilAir-3/GilAir-5 (1 to 750 cc/min.) Price on request 800556 Pump Filter Kit (3 Filters, 3large o-rings, 3 small o-rings, screw), GilAir-3/5 Price on request 800091 LFS Case Front Assy LFS Price on request