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Air and Fuel› Fuel Injection Systems and Components - Electronic

Radium Engineering

Radium Engineering 94-05 Mazda Miata/MX-5 Fuel Rail

$149.95 $138.18 Save $11.77

SKU: R005 20-0369

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In Stock
Ships by Nov 9
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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Radium Engineering fuel rail is a direct replacement for the OEM fuel rail on Mazda 1.8L BP engines. It is CNC machined from 6063 aluminum with a black anodized finish and laser etching. The fuel rail features three threaded ports tapped for 8AN ORB fittings and is compatible with all fuel types, including E85. OEM plastic spacers are reused, and washers are included for thermal insulation.
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Part #: 20-0369

Equipped with three 8AN ORB ports

FUEL RAIL, 94-05 MAZDA MX-5

Vehicle Symptoms
  • Engine hesitation during acceleration
  • Rough idle after cold start
  • Fuel smell from engine bay
  • Poor throttle response under load
  • Check engine light for fuel trim codes
Diagnostic Codes
  • P0171 – System too lean (Bank 1)
  • P0300 – Random/multiple cylinder misfire detected
Relevant Conversations
  • Mazda Miata 1.8L rough idle after intake upgrade
  • P0171 fix on BP engine – fuel rail upgrade?
  • Radium Engineering fuel rail vs stock Miata review
  • How to install Radium fuel rail 20-0369
  • Best fuel rail for turbocharged 1994 Miata
  • E85 compatible fuel rail for MX-5 BP
  • Fuel rail upgrade for 1997 Miata – worth it?
  • Co-purchase: fuel rail and injectors for BP swap
  • Radium fuel rail install time and tips
  • Miata forum: fuel rail causing lean condition?

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandRadium Engineering
Part NumberR005 20-0369

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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