Radium Fuel Rail - Mazda 3 MPS BK / BL / Mazda 6 MPS GG

Suits:

• Mazda 3 MPS — BK (2006-2009)
• Mazda 3 MPS — BL (2009-2013)
• Mazda 6 MPS — GG (2005-2007)

The Radium Engineering Fuel Rail is CNC-machined from extruded 6063 aluminium, black anodised, and laser etched for a premium surface finish. Injector bores are 14mm ID — matching the OEM specification — so factory injectors are fully compatible. OEM injector retaining clip provisions are also implemented for a clean, factory-style installation.

Phenolic spacers and washers are included to thermally insulate the fuel rail from the cylinder head, protecting fuel temperature stability under high load. Compatible with all fuel types including E85 and alcohol blends.

Features

• CNC-machined from extruded 6063 aluminium
• Black anodised and laser etched finish
• 14mm ID injector bores — OEM injector compatible
• OEM injector retaining clip provisions
• Phenolic thermal insulating spacers and washers included
• Compatible with all fuel types including E85 and alcohol blends
• Bolt-on installation — no cutting or drilling required

Kit Includes

• Black anodised laser etched fuel rail
• Phenolic thermal insulating spacers
• Phenolic thermal insulating washers
• Stainless steel mounting hardware

Part Number:

• 20-0503-02 — Radium Fuel Rail (Mazda 3 MPS BK/BL / Mazda 6 MPS GG)

Why Radium Engineering?

• ✅ Manufactured in the USA to motorsport-grade tolerances
• ✅ CNC-machined billet aluminium components built for performance and longevity
• ✅ Trusted by high-power build tuners and race teams worldwide
• ✅ Bolt-on fitment — no cutting, drilling, or fabrication required
• ✅ Compatible with E85, pump petrol, and flex fuel sensor integration