Radium Engineering Fuel Rail BMW M3 (E46) S54 Rail Only

Radium Engineering Fuel Rail – BMW M3 (E46) S54 – Rail Only

Radium Engineering is a motorsport-focused manufacturer known for precision CNC-machined fuel system components built to demanding tolerances. Trusted by tuners and race teams across the globe, their fuel rails are designed to deliver reliable, high-flow fuel distribution on performance builds. This rail is purpose-built for the BMW E46 M3 running the S54 inline-six, offering a significant upgrade over the factory unit for anyone chasing real power.

This listing covers the Radium Engineering fuel rail for the BMW E46 M3 with the S54 engine. This is the rail and mounting hardware only — sold under SKU 20-0070-02.

Note: Fittings and adapters are not included and must be purchased separately. This option suits custom fuel system builds using an aftermarket regulator and custom fuel lines.

Key Features

• CNC-machined anodised aluminium construction
• Internal bore: 16.5mm (0.65 in) for high-flow fuel delivery
• End ports: 8AN ORB (3/4"-16 O-ring thread)
• Centre port: 3/8" NPT female for regulator or sensor integration
• Compatible with OEM and aftermarket direct-fit injectors
• Supports all fuel types including E85, ethanol, methanol, and pump petrol
• Fittings sold separately

Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and configuration are confirmed before ordering.

Pairs Well With

• Radium Engineering Fuel Rail Plumbing Kit - BMW M3 (E46 S54)
• Radium Engineering FPR and Fuel Filter Kit (With Filter) - BMW 3-Series (E46)
• Radium Engineering Fuel Pump Kit (No Pump Included) - BMW M3 (E36 / E46)
• Radium Engineering Fuel Surge Tank Install Kit (Excl. Convertible) - BMW 3-Series (E46)
• Radium Engineering Fuel Pump Hanger - BMW 3 Series (E46)

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