Radium Diaphragm Service Replacement — FPD-R / FPD-XR Fuel Pulse Damper

This is a genuine Radium Engineering replacement diaphragm for the Radium fuel pulse damper range. The diaphragm is a critical internal component of the FPD assembly, absorbing fuel pressure pulses generated by the fuel pump to deliver smooth, consistent fuel pressure to the injectors — particularly important in high-demand, high-horsepower applications.

Replacing the diaphragm at regular service intervals ensures the FPD continues to perform at its rated specification. An essential spare part for any build running a Radium FPD-R or FPD-XR.

Compatible With:

• Radium FPD-R — Fuel Pulse Damper (Range)
• Radium FPD-XR — Fuel Pulse Damper (Extra Range)

Available Part Numbers:

• 18-0018 — Diaphragm Service Replacement, Radium FPD-R / FPD-XR

Why Radium Engineering?

• ✅ Manufactured in the USA to motorsport-grade tolerances
• ✅ OEM-spec replacement diaphragm for consistent FPD performance
• ✅ Trusted by tuners and race teams running high-power builds worldwide
• ✅ Direct drop-in replacement — no modification required
• ✅ Compatible with E85, ethanol, methanol, pump petrol, and flex fuel applications