STANDARD FILL WITHOUT DUMP CAN
These refueling kits are designed specifically for the Radium Engineering FCST AND FCST-X. The fuel cell surge tanks do not come standard with any of the parts in these kits. As described below, the Radium Engineering refueling kits come in a few different varieties.
NOTE: "Complete" refueling kits include a dump can, as shown in photos below.
STANDARD FILL WITHOUT DUMP CAN
20-0815-20 REFUELING KIT, DIRECT MOUNT, STANDARD FILL
This option works for vehicles that require a standard filler mounted directly on the fuel cell. The included fill neck and cap mounts directly to the Radium FCST. 
A proper vent kit secures directly to the 8AN DSV that comes standard with the Radium FCST.
20-0815-22 REFUELING KIT, REMOTE MOUNT, STANDARD FILL
This option works for vehicles that require a standard filler mounted remotely from the fuel cell. The included flanged filler typically mounts to a body panel.
A 36" long (1.5" ID) fuel filler hose attaches to the provided Radium FCST mounted fill neck elbow. A proper vent kit secures directly to the 8AN DSV that comes standard with the Radium FCST.
20-0841-20 FCST-X REFUELING KIT, DIRECT MOUNT, STANDARD FILL
This option works for vehicles that require a standard filler mounted directly on the fuel cell. The included fill neck and cap mounts directly to the Radium FCST-X.
A proper vent kit secures directly to the 8AN DSV that comes standard with the Radium FCST-X.
20-0841-22 FCST-X REFUELING KIT, REMOTE MOUNT, STANDARD FILL
This option works for vehicles that require a standard filler mounted remotely from the fuel cell. The included flanged filler typically mounts to a body panel.
A 36" long (1.5" ID) fuel filler hose attaches to the provided Radium FCST-X mounted fill neck elbow. A proper vent kit secures directly to the 8AN DSV that comes standard with the Radium FCST.