Radium Fuel Pump Hanger: The Ultimate Upgrade for Your Fuel System

If you’re building a high-performance car or swapping a more powerful engine into your daily driver, the Radium fuel pump hanger is one of the most reliable and effective upgrades you can make to your fuel system. It completely replaces the factory in-tank fuel pump module, allowing you to run one, two, or even three aftermarket fuel pumps while maintaining factory fuel level sender functionality. This means you get consistent fuel delivery under high load, protection against fuel starvation during hard cornering or acceleration, and the ability to support big horsepower numbers—all without cutting or modifying your fuel tank. Bottom line: if you’re serious about performance, a Radium fuel pump hanger is the foundation of a safe, future-proof fuel system.

What Is a Radium Fuel Pump Hanger and Why Do You Need One?

A Radium fuel pump hanger is a precision-machined assembly that drops directly into your vehicle’s existing fuel tank, replacing the stock fuel pump module. It’s designed for specific vehicle platforms, including the Toyota GT86/Subaru BRZ/Scion FR-S, Toyota Supra MK4, Mitsubishi Evo 7-8-9, and various GM models like the Camaro and CTS-V.

The main reason to upgrade is fuel starvation. Factory fuel systems are often designed with a single, low-flow pump and a small fuel basket that can leave the pump inlet exposed during hard cornering, acceleration, or low fuel levels. Radium’s hanger includes a collector box with one-way fill valves and a venturi jet pump that constantly keeps fuel around the pump inlets, even when the tank is low. This prevents lean conditions that can destroy your engine.

Key Features That Make Radium Hangers Stand Out

1. Multiple Pump Compatibility

Radium hangers are designed to work with a wide range of aftermarket fuel pumps. Depending on the specific part number, you can run pumps from Walbro, AEM, Deatschwerks, Fuelab, and Protec. For example, the Radium hanger for the FR-S/BRZ/GT86 is compatible with the Walbro F90000267, F90000274, and F90000285, as well as the Deatschwerks DW440 brushless pump. The GM version (20-1320) is built specifically for the AEM 50-1220 and the Deatschwerks DW440 brushless kit.

This flexibility means you can start with a single pump for moderate power levels and later add a second or third pump as your horsepower goals increase—without buying a new hanger.

2. Fuel Starvation Protection

The Radium system uses a 1-piece anodized aluminum collector box that traps fuel around the pump inlet(s). The box has one-way fill valves (each rated at 355 LPH) that allow fuel in but not out. Additionally, the venturi jet pump constantly scavenges fuel from outside the collector and keeps it replenished. This design is far more effective than the factory’s simple baffle system, especially on track days or during spirited driving.

3. High Current Electrical Connections

Instead of using flimsy plastic bulkhead connectors, Radium uses custom-designed stainless steel electrical studs that handle high current loads without overheating. The wiring is insulated with chemically resistant ETFE, and nonconductive acorn nuts prevent accidental short circuits. This is critical because high-flow aftermarket pumps draw significantly more current than stock pumps.

4. No Restrictive Return Line Issues

One common problem with aftermarket fuel pumps is that the factory venturi jet pump creates a restriction in the return line, causing fuel pressure spikes. Radium has redesigned the siphon system to eliminate this restriction while still effectively scavenging fuel. The venturi jet pump consumes only 15–45 LPH depending on fuel pressure, which you should account for when sizing your pumps.

Vehicle-Specific Options

Radium offers hangers for several popular platforms:

  • Toyota GT86/Subaru BRZ/Scion FR-S (12–21) and GR86/BRZ (2022+): Part numbers 20-1073 and 20-1074.
  • Toyota Supra MK4 (JZA80): Part numbers 20-1510, 20-1511, and 20-1512, supporting 1–3 pumps.
  • Mitsubishi Evo 7-8-9: Part number 20-1340, supporting 1–2 pumps.
  • GM cars (08–17): Part number 20-1320, covering models like the Camaro, CTS-V, Pontiac G8, and Holden Commodore.

Each hanger is designed to be a direct drop-in replacement using the factory fuel tank opening, so no permanent modifications are needed.

What You Need to Install a Radium Fuel Pump Hanger

Installing a Radium hanger is a straightforward mechanical job, but you need a few additional components:

Fuel pressure regulator: The Radium system eliminates the factory fuel pressure regulator, so you’ll need an aftermarket one. Radium offers plumbing kits that include a regulator, fuel filter, and all necessary hoses.

Upgraded wiring: While single pump setups can reuse the factory wiring, Radium recommends upgrading to larger gauge wire because high-flow pumps draw more current. They sell universal fuel pump wiring kits for this purpose.

Fuel filter: The hanger eliminates the factory post-pump filter, so you must install a low-micron aftermarket fuel filter downstream to protect your injectors.

Optional check valve: If you want fuel pressure to hold steady after the engine is shut down, install a check valve in the fuel system.

Why Choose KEMSO for Your Fuel Pump Needs

When you invest in a Radium fuel pump hanger, you need a reliable fuel pump to go with it. That’s where KEMSO Fuel Pumps come in. KEMSO offers a full line of high-performance, OEM-replacement fuel pumps engineered to deliver consistent flow and pressure, whether you’re running gasoline or E85.

Here’s what makes KEMSO the right choice:

  • Lifetime warranty: Every KEMSO pump comes with a lifetime warranty backed by a serialized body for tracking. If your pump ever fails, you’re covered.
  • High flow rates: The KEMSO 340LPH pump supports up to 600 BHP and delivers 18% more flow than many stock pumps. It’s E85-ready and built with Viton-lined components that resist ethanol degradation.
  • USA-based support: KEMSO offers technical support from USA-based technicians, so you can get help quickly during installation or troubleshooting.
  • Broad vehicle coverage: KEMSO offers 17 different models covering 98% of gasoline-powered cars and trucks made after 1995. Their online fitment tool makes it easy to find the right pump for your vehicle.

Whether you’re replacing a failing OEM pump or upgrading for a boosted build, KEMSO delivers the performance and reliability you need at a competitive price.

Visit KEMSO Racing today to browse their full line of high-performance fuel pumps: https://www.kemsoracing.com/

Final Thoughts

A Radium fuel pump hanger is a smart investment for anyone pushing their car beyond stock power levels. It solves the common problems of fuel starvation, restrictive return lines, and inadequate electrical connections that plague factory systems. Combined with a high-quality pump like KEMSO’s 340LPH unit, you’ll have a fuel system that can handle anything from daily driving to track days to drag racing.

Don’t cut corners on your fuel system. A failed pump or fuel starvation can destroy your engine in seconds. Start with a solid foundation—a Radium hanger and a KEMSO pump—and enjoy worry-free performance for years to come.

For the best selection of fuel pumps and fuel system components, visit KEMSO Racing at https://www.kemsoracing.com/.


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