Radium 20-1027 FCST-X 3-Bolt Remote Mount Straight Fill Neck 1.5in Hose Barb

Vehicle Fitment

• Universal - No vehicle-specific fitment. Designed for use with Radium Engineering FCST-X Fuel Cell Surge Tank units only (part numbers: 20-1990-XX, 20-1991-00, 20-1992-XX, 20-1993-00, 20-1995-00).

Fitment Notes

• Compatible with FCST-X (3-bolt flange) units ONLY. Not compatible with older FCST models (20-014X-XX, 20-049X-XX, 20-069X-XX, 20-099X-XX) which use a 6-bolt fill neck (see 20-0527).
• Designed for use with a body-mounted remote filler housing (not included). Requires 1.5in filler hose to connect fill neck to remote filler.
• Roll-over protection is integrated into the FCST-X unit; a separate flapper valve is not required on this fill neck.

Features

• Straight 1.5in barb design allows for simple, direct hose routing from the FCST-X to the remote filler housing.
• Integrated flapper check valve provides roll-over protection, preventing fuel spillage if the vehicle becomes inverted.
• Uses a 3-bolt flange pattern to mate directly with the FCST-X fill neck port - no adapters required.
• FKM O-ring seal ensures a leak-free, fuel-compatible connection at the FCST-X interface.
• Full CNC-machined aluminum construction with anodized finish for corrosion resistance and long service life.
• Compatible with all fuel types including gasoline, diesel, E85, ethanol, and methanol.

Specifications

• Flange Type: 3-bolt (FCST-X specific)
• Hose Barb Size: 1.5in (38mm) ID
• Orientation: Straight
• Seal Type: FKM O-ring
• Material: CNC-machined anodized aluminum
• Hardware: Stainless steel

Included Components

• 1x Straight flanged fill neck for 1.5in ID hose
• 1x FKM O-ring seal
• 1x Stainless steel hardware set

Product Description

The Radium Engineering 20-1027 is a straight 3-bolt remote mount fill neck designed exclusively for use with the FCST-X Fuel Cell Surge Tank. It provides the connection point between the FCST-X and a body-mounted remote fuel filler, allowing builders to route the fuel fill point to a more accessible location on the vehicle such as a fender or body panel. The straight 1.5in barb accepts standard Radium filler hose and routes cleanly to the remote filler housing of choice.

Machined from anodized aluminum with stainless steel hardware and sealed with an FKM O-ring, this fill neck is built for the demands of competition use. The integrated flapper check valve adds roll-over protection as a safety measure. Note that this part is not compatible with the older 6-bolt FCST platform - builders using legacy FCST units should reference part number 20-0527 instead.