Radium Engineering RA-Series Fuel Pressure Regulator Kit - Mazda MX-5 Miata (1999-2005)

This Radium Engineering kit adapts an RA-Series rotating-assembly fuel pressure regulator to the 1999-2005 Mazda MX-5 Miata, including the bracketry and fittings needed for a clean, bolt-in install.

Built on Radium's 1:1 vacuum-reference platform with tool-less pressure adjustment and high-flow internals, it delivers stable, adjustable fuel pressure for upgraded fuel systems on the NB Miata.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy