Radium Engineering Fuel Pulse Damper - Direct Mount (FPD-R / FPD-XR) | 8AN ORB or 3/8" NPT

Radium Fuel Pulse Damper - Direct Mount (FPD-R / FPD-XR) | 8AN ORB or 3/8" NPT

Application: Universal – EFI fuel systems with a 3/8" NPT female port
Part Type: Direct mount fuel pulse damper, FPD-XR (extended range), 3/8" NPT
Part Number: 20-0179

Injector opening and closing creates pressure pulses in the fuel rail that can cause unstable fuel pressure, idle surge (especially with high-flow injectors) and lean AFR spikes felt as stumbling. The Radium Direct Mount Fuel Pulse Damper absorbs these pulses with an internal diaphragm to stabilise fuel pressure.

Part 20-0179 is the FPD-XR extended range damper with a male 3/8in NPT body, suited to a base static fuel pressure of 40–105 psi. A vacuum/boost reference port maintains damper performance at elevated fuel pressures, and the damper is safe with all fuel types including E85.

Key Features

• Extended Range (XR): Base static fuel pressure 40–105 psi
• 3/8in NPT Mount: Tapered male thread – vacuum port can be clocked while tightening
• Vacuum/Boost Reference: Maintains performance at elevated fuel pressure
• Mount Anywhere: Any angle, including upside down
• All Fuels: Compatible with E85 and all fuel types

What's Included

• Anodised, laser engraved aluminium top (marked XR)
• Anodised aluminium body with male 3/8in NPT thread
• Stainless steel hardware
• Rubber vacuum hose, 4mm ID
• Vacuum hose Y-fitting

Optional Parts

• Radium FPD-R Fuel Pulse Dampener - 3/8" NPT (20-0178) – standard range (40–70 psi) NPT version
• Radium V2 FPD-XR Extended Range Fuel Pulse Damper, 8AN ORB (20-0777) – extended range version for 8AN ORB ports
• Radium V2 FPD-R Fuel Pulse Damper, 8AN ORB (20-0776) – standard range version for 8AN ORB ports

Important Notes

• Cannot be used with mechanical fuel pumps (including direct injection) – the pulses will rupture the diaphragm
• Base pressure is measured with the pump running and no vacuum line connected to the regulator; it must be within 40–105 psi
• Dynamic pressure from a rising-rate FPR outside this range is acceptable provided base pressure is in range and the vacuum/boost reference line is connected; a vacuum line may still be needed if pressure can fall below 40 psi
• If base pressure is 70 psi or less the XR generally offers no advantage over the FPD-R
• NPT threads require sealant – tighten finger tight plus 1.5 to 3 turns
• This listing is the 3/8in NPT FPD-XR only – see Optional Parts for FPD-R and 8AN ORB versions
• Installation instructions are available in the Instructions tab

Vehicle Fitment

• Universal – see Application

If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.

Installation

We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.

Note

Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.