Radium 20-1197-V FCST-X 3-Bolt Vented Direct Mount Fuel Fill Neck & Cap

Vehicle Fitment

• Universal - for Radium FCST-X fuel cell surge tank systems
• Designed to mount directly to FCST-X 3-bolt fuel cell flange
• Not compatible with older FCST 6-bolt systems

Features

• Direct mount fuel fill neck engineered for Radium FCST-X tanks
• Vented cap included with rollover protection and airflow
• 3-bolt flange standard (≈2.34" / 59.5 mm bolt circle) for secure attachment
• Anodized aluminum fill neck and cap for corrosion resistance
• FKM O-ring factory seal for leak-resistant refueling
• Stainless steel hardware for durability in motorsport applications
• Optimized for quick, clean fuel filling without spills
• Compatible with gasoline, E85, and most performance fuels with correct seals

Specifications

• Part Number: 20-1197-V
• Application: Direct mount fuel filler neck + vented cap for FCST-X
• Mount Pattern: 3-bolt flange (≈59.5 mm / 2.34" bolt circle)
• Material: Anodized aluminum neck and cap
• Seal: FKM O-ring gasket
• Hardware: Stainless steel bolts
• Fuel Fill Size: Standard surge tank refueling neck
• Vent: Integrated into cap for pressure equalization

Included Components

• 1x Direct mount fill neck with flange
• 1x Vented fuel cap with tether
• 1x FKM O-ring gasket seal
• Stainless steel mounting hardware

Product Description

The Radium Engineering 20-1197-V is a **direct mount fuel fill neck and vented cap** designed specifically for Radium FCST-X fuel cell surge tanks. It attaches directly to the FCST-X's 3-bolt flange (≈59.5 mm diameter) and provides a convenient, secure way to refill your surge tank without the need for remote plumbing or adapters. The included vented cap supplies positive ventilation and rollover protection during fill, which helps maintain proper airflow and minimizes spillage.

Constructed with anodized aluminum and sealed with an FKM O-ring gasket, this fill neck is built for durability and consistent performance - making it suitable for high-performance and motorsport fuel systems. Stainless steel hardware ensures corrosion resistance in challenging environments, and the design integrates easily with Radium FCST-X components without modification. Whether you're building a track car, race rig, or custom fuel system, the 20-1197-V makes refueling quick, clean, and reliable.