Radium Engineering 20-0070-02 S54 Fuel Rail Kit for 01-08 BMW M3/Z3M/Z4M

Vehicle Fitment

• 2001-06 BMW M3 E46 (S54 3.2 L I6, RWD)
• 2001-02 BMW Z3 M (S54 3.2 L I6, RWD)
• 2006-08 BMW Z4 M (S54 3.2 L I6, RWD)

Features

• CNC-machined 6061-T6 aluminum for strength and precision
• Black anodized & laser-etched finish for durability and aesthetics
• Compatible with gasoline and E85 fuel types
• High-flow design to support increased fuel demand in tuned engines
• OEM-style injector spacing and mounting locations
• Includes stainless steel mounting hardware
• Bolt-on replacement for OE S54 fuel rail - no modifications needed
• Compatible with aftermarket regulators and injectors for S54 EFI systems

Specifications

• Material: CNC-machined 6061 aluminum, black anodized
• Orientation: top-mount rail for S54 engine, driver & passenger bank
• Compatibility: BMW S54 3.2 L I6 engine only
• Fuel type: Gasoline and E85 compatible
• Injector spacing: OEM BMW S54 standard

Included Components

• 1x Billet aluminum fuel rail (black anodized)
• Mounting bracket and stainless hardware

Product Description

The Radium Engineering 20-0070-02 Fuel Rail Kit is precision-engineered for BMW engines powered by the S54 3.2 L I6, found in models including the M3 E46 (2001-06), Z3 M (2001-02), and Z4 M (2006-08). Crafted from billet 6061 aluminum with a durable black anodized finish, this high-flow rail improves fuel delivery while clearing factory components for a clean fit.

Designed to bolt directly into the OEM S54 fuel system, this rail maintains stock injector spacing and OEM mounting points. Compatibility with E85 blends and aftermarket injectors/regulators makes it the ideal upgrade for performance builds and EFI tuning. Fitment confirmed through 2008; **2025 application unconfirmed** as the S54 engine was discontinued after these years.