Radium Engineering AN ORB Fuel Surge Tank Bulkhead Fittings Universal 6AN / 10AN

Radium Engineering AN ORB Fuel Surge Tank Bulkhead Fittings - Universal - 6AN / 10AN

Radium Engineering's AN ORB bulkhead fittings are purpose-built replacement and upgrade fittings for Radium Fuel Surge Tank (FST) systems. CNC-machined from billet aluminium with a bright-dip green anodise finish, these fittings are built to motorsport-grade tolerances and come preassembled with a Viton O-ring for a reliable, leak-free seal straight out of the box. Compatible with the full range of fuel types including pump petrol, E85, and methanol.

This listing covers two AN ORB bulkhead fitting variants — the 6AN ORB (SKU 20-0170) for standard Radium FST units introduced post-2014, and the 10AN ORB (SKU 20-0196) for Radium High Volume FST units introduced post-2015. Select the correct size for your FST configuration.

Important: These fittings use AN ORB (O-ring Boss) thread and require a chamfered threaded hole in the mating part. Ensure your surge tank or mounting surface is machined to the correct specification before installation.

Specifications

• 20-0170 — 6AN ORB, 8.5mm (5/16 in) barb OD, 9/16"-18 thread with chamfer, suits Radium FST (post-2014)
• 20-0196 — 10AN ORB, 15.9mm (5/8 in) barb OD, 7/8"-14 thread with chamfer, suits Radium High Volume FST (post-2015)
• Material: CNC-machined billet aluminium with bright-dip green anodise finish
• Seal: Preassembled Viton O-ring
• Fuel compatibility: Pump petrol, E85, methanol, and exotic fuel types
• Thread type: AN ORB (O-ring Boss) — positive sealing, no thread sealant required

Confirm your Radium FST model and production year before selecting a variant. Additional fitment notes are provided in the tabs above.

Not sure if this fitting suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.