The Radium Engineering FPR-D (Fuel Pressure Regulator-Damper) is a high-performance hybrid component that combines a high-flow regulator with an integrated fuel pulse damper. This design saves space and simplifies plumbing by eliminating the need for a standalone damper, while effectively smoothing out pressure fluctuations caused by large injectors. It is specifically engineered to handle high-volume systems, making it suitable for fuel pumps flowing between 100 and 1,400 liters per hour (LPH).

• Integrated Pulse Damper: Stabilizes fuel pressure and reduces oscillation for more accurate tuning.
• High Flow Capacity: Designed for systems ranging from 100 to 1,400 LPH.
• Tool-Free Adjustment: Features a knurled top knob for easy pressure setting without external tools.
• Fuel Compatibility: Fully compatible with gasoline and E85 ethanol blends.
• Finish: Durable green anodized aluminum construction.
• Manufacturer Part Number: 20-1528-01

The Radium Engineering FPRD-RA (Fuel Pressure Regulator Damper) combines a high-flow adjustable regulator with an integrated fuel pulse damper in a single compact housing. This unit is specifically engineered to manage high-volume fuel systems, making it an ideal choice for setups utilizing pumps with flow rates ranging from 100 to 1,400 liters per hour (LPH).

By integrating the damper directly into the regulator, the FPRD-RA effectively stabilizes the pressure fluctuations caused by rapid fuel injector opening and closing, ensuring more consistent fuel delivery across the rail. The internal components are designed for long-term reliability and are fully compatible with both gasoline and E85 ethanol blends.

• Manufacturer Part Number: 20-1528-00
• Supports fuel pump flow rates from 100 to 1,400 LPH
• Integrated pulse damper for stabilized fuel rail pressure
• E85 and gasoline compatible internal seals
• Type II anodized black finish for corrosion resistance
• Universal application for custom high-performance fuel systems

Fits 1993-2002 Toyota Supra (MK4).

The Radium Engineering Fuel Pulse Damper (FPD) Kit for the MK4 Supra is designed to solve the common issue of fuel pressure pulsations in high-performance EFI systems. As fuel injectors cycle on and off, they create rapid pressure waves within the fuel rail that can cause hydraulic hammering, audible noise, and inconsistent fuel delivery. These fluctuations often lead to difficult-to-tune lean or rich spots in the engine map.

This kit features a vacuum-referenced internal diaphragm that absorbs these energy pulses, stabilizing the fuel pressure at the rail for more precise injector performance. It is a critical addition for Supra owners running high-flow fuel pumps and large injectors where rail harmonics are most aggressive. The assembly is engineered for a clean, direct fit in the MK4 chassis to ensure long-term reliability and a quieter fuel system.

• Stabilizes fuel rail pressure for more consistent tuning and AFRs
• Reduces audible fuel system noise and injector clatter
• Vacuum-referenced design for dynamic compensation under boost
• Replaces or supplements factory dampers in high-flow applications
• Includes all necessary hardware for installation
• Manufacturer Part Number: 20-1389

Fits 2010-2015 Chevrolet Camaro LS, LT, SS, Z/28, and ZL1 models.

Servicing the fuel pump on a 5th-Gen Camaro typically requires the labor-intensive task of dropping the entire fuel tank. The Radium Engineering Fuel Pump Access Cover (MPN 20-1323) simplifies future maintenance by providing a dedicated "trap door" access point. This allows for quick inspections, wiring adjustments, or pump replacements directly from inside the cabin once the initial installation is complete.

• Material: Durable, laser-cut clear polycarbonate for easy visual inspection of the fuel pump hanger and connections without removing the cover.
• Function: Simplifies fuel system service and prevents the need to drop the fuel tank for pump access.
• Installation: Requires cutting the factory sheet metal under the rear seat; includes all necessary mounting hardware for a secure, sealed finish.
• Includes: Clear polycarbonate cover, gaskets/sealant, and stainless steel hardware.

Fits the following vehicles:

The Radium Engineering 20-1214 FCST-X Lift Pump Mounts are engineered to provide precise height adjustability for lift pumps within a Fuel Cell Surge Tank (FCST-X) assembly. These brackets are essential for installations where the standard mounting hardware provided with the FCST-X is the incorrect length for the specific depth of the fuel cell being utilized.

• Direct fit for the Radium Engineering FCST-X (Fuel Cell Surge Tank) system
• Allows for proper lift pump pickup positioning across various fuel cell depths
• Replaces standard brackets when custom height adjustment is required
• Manufacturer Part Number: 20-1214

The Radium Engineering DSV Valve Extension Adapter (20-1035) is a precision component designed to optimize usable fuel volume for vehicles utilizing any Radium Fuel Cell Surge Tank (FCST). This adapter effectively raises the mounting height of the Discriminator Safety Valve (DSV) on the surge tank top plate.

By elevating the DSV, this extension allows for a higher fuel fill level before the internal float ball triggers the vent shut-off. This is a critical modification for endurance racing and track applications where maximizing fuel capacity is paramount. The adapter installs easily, threading into the existing port to provide the necessary clearance for more efficient filling.

• Manufacturer Part Number: 20-1035
• Compatibility: All Radium Engineering Fuel Cell Surge Tank models
• Function: Elevates the DSV float ball to increase fuel cell fill capacity
• Installation: Threads directly between the FCST top plate and the DSV valve

The Radium Engineering 20-0896 Fuel Level Adapter is a precision-engineered solution for enthusiasts upgrading their fueling system. Designed specifically for early model Nissan Skyline and Infiniti G37, Q50, and Q60 vehicles, this adapter allows for the seamless integration of the factory fuel level sending unit into an aftermarket Radium fuel hanger.

Maintaining an accurate fuel gauge reading is critical when modifying a vehicle's fuel system. This adapter ensures that the original equipment (OE) float arm is correctly positioned and has a full range of motion, preventing interference and providing reliable data to the dashboard. Like all Radium Engineering components, this adapter is built to withstand constant exposure to pump gas and ethanol-blended fuels.

• Fits early model Nissan Skyline and Infiniti G37, Q50, and Q60 platforms
• Compatible with Radium Engineering fuel hangers
• Enables retention of the factory fuel level sender for accurate gauge readings
• Durable construction compatible with gasoline and E85
• Manufacturer Part Number: 20-0896

Fits 2015-2021 Subaru WRX (FA20).

The Radium Engineering Fuel Level Sender Adapter is a specialized bracket required for drivers upgrading to a Radium in-tank fuel pump hanger. Because the factory fuel pump assembly housing typically holds the fuel level sender, replacing the entire OE unit with a high-flow Radium hanger leaves the sender without a mounting point. This adapter solves that issue by providing a secure, precise location for the original equipment sensor.

• Specifically engineered for use with Radium Engineering in-tank fuel pump hangers
• Ensures the factory fuel level sender remains functional for accurate dash readings
• Robust construction designed to withstand constant fuel immersion
• Maintains proper sensor orientation and depth within the fuel tank
• Manufacturer Part Number: 20-0850

The Radium Engineering Shrouded SAE Fuel Level Sender (20-0847-297) provides high-precision fuel volume data for performance fuel cells and custom tanks. At 11.7 inches in length, this unit features a protective outer shroud that acts as a stilling well, dampening fuel slosh to ensure stable and consistent gauge readings during high-G cornering or rapid acceleration.

Built for durability in harsh environments, this sender is manufactured from stainless steel to prevent corrosion across various fuel types. It utilizes the standard 5-bolt SAE mounting pattern, making it a direct fit for most aftermarket fuel cells and fuel pump hangers.

• Length: 11.7 inches (297mm)
• Resistance Range: 0 Ohms (Empty) / 90 Ohms (Full)
• Mounting: Standard 5-bolt SAE pattern
• Construction: Stainless steel body and internal components
• Fuel Compatibility: Gasoline, E85, Ethanol, Methanol, and Diesel
• Manufacturer Part Number: 20-0847-297

Specifically designed for precision monitoring in high-performance fuel systems, this Radium Engineering 8-inch fuel level sender is a direct fit for Radium 6-gallon, 10-gallon, and spare tire fuel cells. The shrouded design acts as a baffle, protecting the internal float from fuel slosh and turbulence to ensure a steady and accurate gauge reading during high-G cornering or acceleration.

Built with robust stainless steel components, this sender is engineered to withstand long-term immersion in various fuel types. It utilizes a standard SAE 5-bolt mounting pattern for a secure interface with the fuel cell flange and operates on a 0-90 ohm resistance range, making it compatible with most common aftermarket gauges and digital dashes.

• Manufacturer Part Number: 20-0847-203
• Length: 8.0 inches (203mm)
• Resistance Range: 0-90 Ohms
• Construction: Stainless steel body and shroud
• Mounting: SAE 5-bolt pattern
• Fitment: Radium Engineering 6-gallon, 10-gallon, and Spare Tire fuel cells

Fits 2008-2015 Cadillac CTS-V Sedan and Coupe models.

The Radium Engineering Fuel Pump Access Cover (MPN: 20-0835) provides a permanent, professional solution for servicing fuel system components without the labor-intensive requirement of dropping the vehicle's fuel tank. This panel is designed to provide clear, top-side access to the fuel pump hanger for faster maintenance, pump swaps, or diagnostic work.

Constructed from lightweight, precision-machined aluminum, the cover ensures a clean finish while maintaining structural integrity. Note that installation requires permanent modification to the vehicle, involving drilling and cutting of the factory floor pan to create the access point.

• Manufactured from high-grade aluminum for durability and corrosion resistance
• Eliminates the need to drop the fuel tank for pump or hanger service
• Low-profile design minimizes interference with factory carpet and trim
• Required hardware and instructions for installation included
• Manufacturer Part Number: 20-0835

The Radium Engineering Pump Outlet Adapter (MPN: 20-0798) is a specialized fitting designed to install directly onto specific fuel pump outlet barbs. This adapter features an integrated check valve, which is critical for maintaining residual fuel system pressure after the pump is turned off, ensuring faster restarts and preventing fuel backflow.

Constructed for durability and precision, this component provides a reliable 10mm male hose barb connection, making it an essential upgrade for custom fuel systems where a high-flow check valve is required at the source.

• Manufacturer Part Number: 20-0798
• Integrated internal check valve maintains fuel rail pressure
• 10mm male hose barb outlet for secure fuel line plumbing
• Machined for a precise fit on specific pump outlet barbs
• Improves engine startup by preventing pressure drop

The Radium Engineering XR Fuel Pulse Damper (FPD) is designed to manage the high-frequency pressure fluctuations created by the rapid opening and closing of fuel injectors in EFI systems. These pulses can lead to resonance within the fuel rail, resulting in inconsistent fueling and audible mechanical noise. By absorbing these energy waves, the XR FPD helps maintain a stable pressure environment for more precise tuning and quieter operation.

Equipped with a swivel body, this damper allows for 360-degree orientation after it is threaded into a female 8AN ORB port. This flexibility is essential for achieving clearance in crowded engine bays or tight fuel rail configurations. The unit is constructed for maximum durability and is fully compatible with all fuel types, including gasoline, ethanol (E85), and methanol.

• Manufacturer Part Number: 20-0777
• Inlet/Outlet: 8AN ORB male swivel
• Function: Attenuates fuel pressure pulses in high-performance EFI systems
• Compatibility: Safe for use with gasoline, E85, and methanol
• Design: Swivel housing for easy positioning and clearance

The Radium Engineering Fuel Pulse Damper (FPD-R) is a critical component for stabilizing fuel pressure in high-performance EFI systems. This damper is engineered to absorb the pressure waves (pulses) generated by the rapid opening and closing of fuel injectors. By smoothing these pulsations, it ensures more consistent fuel delivery and eliminates the audible "hammering" noise often associated with aftermarket fuel systems.

Designed for versatility, this unit features a male 8AN ORB fitting that threads directly into any matching female port, such as those found on fuel rails or regulators. The damper body is equipped with a swivel mechanism, allowing you to orient the unit 360 degrees after installation to clear surrounding engine components.

• Replaces erratic pressure spikes with smooth, consistent fuel flow
• 360-degree swivel body for easy installation in tight spaces
• Male 8AN ORB (3/4"-16 O-ring boss) mounting interface
• Compatible with all fuel types, including gasoline, methanol, and E85
• Anodized finish for long-term corrosion resistance
• Manufacturer Part Number: 20-0776

Fits select 2014-2021 Subaru models.

The Radium Engineering Fuel Pump Access Cover (20-0746) is a precision-engineered direct replacement for the factory stamped-steel plate located underneath the rear seat. This upgrade is specifically designed for enthusiasts running aftermarket fuel systems or those who simply want a cleaner look for their interior or track build. The transparent construction provides a significant advantage by allowing for quick visual inspections of fuel lines, electrical connections, and fittings without the need to unbolt the cover.

• Direct replacement for the OEM fuel pump access cover
• Transparent material allows for easy monitoring of fuel system components
• Features laser-etched Radium Engineering logos for a custom look
• Maintains the necessary seal against the chassis to block road noise and debris
• Engineered to fit the factory mounting points
• Manufacturer Part Number: 20-0746

Fits 2008-2014 Subaru models.

The Radium Engineering Fuel Pump Access Cover is a direct replacement for the factory stamped-steel cover located beneath the rear passenger seat. This transparent cover allows for immediate visual inspection of the fuel pump housing, electrical connectors, and plumbing without the need to disassemble the vehicle interior.

Crafted for enthusiasts who prioritize both form and function, this component is essential for monitoring aftermarket fuel systems for leaks or wiring issues. It installs using the factory mounting points and maintains a secure barrier between the fuel tank area and the cabin.

• Transparent construction for quick visual system checks
• Direct replacement for the OEM fuel pump access plate
• Laser-etched Radium Engineering logos
• Maintains factory-style seal under the rear seat
• Manufacturer Part Number: 20-0745

Fits 1989-1994 Nissan 240SX (S13) and R32 chassis models.

The Radium Engineering Clear Fuel Pump Access Cover replaces the factory steel panel, allowing for quick visual inspection of the fuel pump assembly, electrical connections, and fuel lines without removing any hardware. This is a critical upgrade for vehicles running aftermarket fuel systems where monitoring for potential leaks or connector heat is essential for safety and maintenance.

• Manufactured from durable clear polycarbonate for a transparent view of the fuel tank service area
• Replaces the opaque OEM Nissan access cover
• Allows for troubleshooting and inspection without tools or disassembly
• Installs using the existing factory mounting points
• Manufacturer Part Number: 20-0735

The Radium Engineering 20-0599 Extended Pump Outlet Adapter is designed to streamline the plumbing of high-performance fuel systems. This adapter installs directly onto the discharge port of select submersible fuel pumps, converting the factory connection to a standard -6AN male flare. The "extended" design provides necessary clearance for specific fuel hanger configurations or deep-tank setups where a standard-length fitting may be obstructed.

Constructed for compatibility with high-pressure environments, this adapter replaces unreliable hose-and-clamp internal connections with a secure, threaded interface, reducing the risk of fuel pressure loss or internal leaks. It is an essential component for builders integrating aftermarket pumps into custom fuel cells or OEM tanks using AN lines.

• Manufacturer Part Number: 20-0599
• Outlet Size: -6AN Male
• Fitment: Select submersible fuel pumps
• Design: Extended length for improved clearance
• Application: Submersible fuel system plumbing

The Radium Engineering 20-0598 Fuel Pump Adapter is designed to convert the outlet of high-flow Ti Automotive and Walbro fuel pumps to a standard 6AN male fitting. This adapter simplifies fuel system plumbing by allowing the use of braided AN hoses directly at the pump outlet.

This component features an integrated check valve, which is a critical addition for pumps that lack an internal one, such as the Ti Automotive E5LM. By maintaining line pressure when the pump is off, the integrated check valve prevents fuel bleed-off, ensuring faster engine priming and more reliable starts.

• Manufacturer Part Number: 20-0598
• Outlet Size: 6AN Male
• Integrated check valve to maintain system pressure
• Compatible with Ti Automotive E5LM brushless pumps
• Specifically designed for Walbro F90000267 and F90000274 pumps
• Machined construction for secure fitment on OEM-style hose barbs

Maintain accurate fuel gauge readings when upgrading your fuel delivery system with the Radium Engineering 20-0596 Fuel Level Adapter. This specialized component is designed to bridge the gap between factory sensing hardware and high-performance fuel setups, specifically allowing the installation of early-model fuel level floats onto the Radium In-Tank Fuel Hanger Surround Tank (FHST) system.

Precision-engineered for a factory-like fit, this adapter is CNC machined from high-quality aluminum to ensure long-term durability and resistance to modern fuel additives. It provides a secure mounting point for the OE float arm, ensuring the fuel level sending unit operates correctly within the Radium tank environment.

• Fits early-model Nissan 350Z and Infiniti G35 fuel level floats
• Designed exclusively for use with Radium Engineering FHST systems
• CNC machined aluminum construction for maximum precision
• Simplifies the integration of factory level sensors in performance fuel tanks
• Manufacturer Part Number: 20-0596

The Radium Engineering Fuel Level Switch and Diagnostic LED Indicator Kit (MPN 20-0519) provides a comprehensive monitoring solution for your fuel system. This kit combines a liquid level sensor with a remote diagnostic light to provide real-time feedback on fluid status, helping to prevent fuel pump starvation in surge tanks or overflow in catch cans.

By integrating the switch and the LED indicator, this kit allows for easy cockpit monitoring. It is specifically designed for compatibility with Radium Engineering fuel surge tanks, fuel cells, and other reservoirs featuring a level switch port.

• Complete Assembly: Includes Radium part numbers 20-0461 (Level Switch) and 20-0508 (Diagnostic LED Indicator).
• System Safety: Enables the triggering of external pumps, relays, or warning lights to maintain optimal fluid levels.
• Precision Engineering: Built to the high tolerances required for performance fuel systems and motorsport environments.
• Direct Fit: Designed for use with any Radium Engineering product that is level switch compatible.

Monitor critical fluid levels with the Radium Engineering Fuel Level Switch (MPN: 20-0461). Designed for universal integration into fuel cells, surge tanks, or custom reservoirs, this switch provides a reliable signal when fluid levels drop or rise beyond the float's position. The robust stainless steel construction ensures long-term durability in demanding automotive environments.

• Universal Compatibility: The specialized float is designed to function reliably in all popular vehicle fuels, including gasoline, diesel, and high-ethanol blends like E85.
• Durable Construction: Features a high-grade stainless steel body for maximum corrosion resistance and chemical stability.
• Standard Fitment: Utilizes 1/8 NPT male threads, allowing it to bolt directly into many factory and aftermarket fuel system ports.
• Simple Integration: The internal switch activates immediately upon float movement, making it ideal for triggering low-fuel warning lights or safety relays.

Designed for the Nissan VQ engine platform, this Radium Engineering Fuel Pressure Damper (FPD) adapter allows for the removal of the factory damper to accommodate custom fuel system plumbing. This adapter (MPN 20-0459) provides a high-flow path and a secure connection point for aftermarket fuel lines or sensors without compromising the integrity of the fuel rail.

• Direct replacement for the OEM fuel pressure damper on Nissan VQ engines
• CNC machined construction for precise fitment and leak-free performance
• Features a 27mm bore to match factory housing specifications
• Integrated 8AN ORB (3/4-16 threaded) outlet for versatile plumbing options
• Manufacturer Part Number: 20-0459

The Radium Engineering Denso Fuel Level Sending Adapter (MPN 20-0350) is a precision-engineered solution for integrating Japanese OEM sensor technology with aftermarket fuel systems. This adapter allows a standard Denso-style fuel level sender to be securely mounted to any fuel tank or fuel cell equipped with a standard 5-bolt SAE flange pattern.

Constructed for long-term reliability in high-performance environments, this component allows builders to retain accurate factory fuel gauge functionality when transitioning to a custom fuel cell or a Radium Fuel Cell Surge Tank (FCST). The adapter is designed to withstand all fuel types while providing a leak-free seal.

• CNC machined from 6061-T6 aluminum for exact tolerances
• Type II black anodized finish for corrosion resistance and full compatibility with gasoline, E85, and methanol
• Adapts Denso-style fuel level senders to a universal 5-bolt SAE mounting pattern
• Includes stainless steel mounting hardware
• Manufacturer Part Number: 20-0350

The Radium Engineering Fuel Pump Adapter (20-0298) provides a precise interface for integrating specific high-performance Walbro pumps into your fuel system. This adapter is engineered to ensure a secure, leak-free fitment, maintaining the integrity of fuel delivery under high-demand conditions.

• Manufacturer Part Number: 20-0298
• Exclusively compatible with Walbro F90000267 and F90000274 fuel pumps
• Maintains correct pump positioning within the fuel hanger or surge tank
• Essential component for clean, professional fuel system plumbing

The Radium Engineering FCST Lift Pump Extension is specifically designed for use with the Radium Fuel Cell Surge Tank (FCST) when installed in deep fuel cells. This component extends the reach of the internal lift pump to ensure it can effectively scavenge fuel from the lowest point of the tank, preventing fuel starvation during high-performance driving.

By optimizing the lift pump's vertical position, this extension ensures that the surge tank remains filled even as fuel levels drop or during high-G cornering and acceleration. This is a critical upgrade for racers utilizing tall-profile fuel cells that exceed the standard reach of the base FCST configuration.

• Manufacturer Part Number: 20-0214
• Application: Radium Engineering Fuel Cell Surge Tank (FCST)
• Purpose: Extends lift pump pickup for deep-well fuel cells
• Construction: High-quality, fuel-safe materials compatible with all fuel types
• Ensures consistent fuel delivery to the surge tank

The Radium Engineering FPD-XR (Fuel Pulse Damper - Extra Range) is designed to stabilize fuel pressure by absorbing the hydraulic pulses generated by rapidly cycling injectors. These oscillations can cause resonance in the fuel rail, leading to inconsistent fueling and audible injector noise. By installing this direct-mount damper, you ensure more linear fuel delivery and protect sensitive components from pressure spikes.

• High-Capacity Control: The XR model features a larger internal diaphragm to handle higher pressure fluctuations compared to standard dampers.
• Direct Integration: Threads directly into any 3/8 NPT port, making it ideal for aftermarket fuel rails and custom plumbing.
• Vacuum Reference: Includes a vacuum port to maintain a constant pressure differential, ensuring performance remains consistent under varying engine loads.
• Premium Construction: Precision-machined housing designed for long-term durability in high-performance fuel systems.

• Manufacturer Part Number: 20-0179
• Fitting Size: 3/8 NPT Male
• Series: FPD-XR (Extra Range)
• Mounting: Direct Mount

The Radium Engineering FPD-R (Fuel Pulse Damper - Referenced) is an essential component for managing high-frequency pressure fluctuations within the fuel rail. These pulses, caused by the rapid opening and closing of fuel injectors, can lead to erratic fuel pressure, lean spots, and audible fuel system noise. By absorbing these energy waves, the FPD-R ensures a steady fuel delivery across the entire RPM range.

This direct-mount kit features a 3/8 NPT male thread for installation into compatible fuel rails or regulator ports. Unlike static dampers, the FPD-R is vacuum/boost referenced, allowing it to adjust its internal diaphragm tension based on manifold pressure. This ensures consistent damping performance in forced induction applications where fuel pressure scales with boost.

• Manufacturer Part Number: 20-0178
• Fitting Type: 3/8 NPT Male
• Damper Type: Vacuum/Boost Referenced
• Material: Anodized aluminum housing
• Installation: Direct-mount to 3/8 NPT fuel rail or regulator ports

Fits 2005-2011 Lotus Elise and 2006-2011 Lotus Exige (2ZZ-GE).

The Radium Engineering Fuel Pump Adapter is a precision-engineered solution for owners looking to maintain or service the fuel system on the Lotus Elise and Exige platforms. This adapter (MPN 20-0032) is designed to integrate seamlessly with the factory fuel pump housing, providing a reliable and secure connection for the 2ZZ-GE powertrain.

• Designed for use with the OEM fuel pump housing
• Specifically engineered for 2ZZ-GE equipped Lotus models
• Replaces worn or restrictive factory adapter components
• Manufacturer Part Number: 20-0032

Keep your Radium Engineering Fuel Pulse Damper (FPD) performing as intended with the 18-0018 Diaphragm Service Replacement kit. This kit is designed for the maintenance or repair of your existing damper, ensuring the internal diaphragm continues to effectively manage fuel rail pressure spikes and harmonics.

High-performance fuel systems often generate significant pulses that can lead to inconsistent fueling; this service replacement restores the damper’s ability to smooth those waves for more stable pressure at the injectors. It is a cost-effective alternative to replacing the entire FPD assembly when only the internal soft goods require attention.

• Genuine Radium Engineering service component
• Includes necessary internal diaphragm assembly
• Maintains fuel system pressure stability and tuning accuracy
• Manufacturer Part Number: 18-0018