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Our Price: $149.95
Fuel Rail:
Plumbing Kit:


Click here to download installation instructions (PDF)


-Mitsubishi Evolution I 4G63
-Mitsubishi Evolution II 4G63
-Mitsubishi Evolution III 4G63
-Mitsubishi Galant VR4 4G63
-Mitsubishi Eclipse (DSM) 4G63
-Plymouth Laser (DSM) 4G63
-Eagle Talon (DSM) 4G63


The fuel rail features four (4) threaded ports that are tapped for 8AN ORB. What is an ORB port? CLICK HERE

8AN ORB Adapter Fittings can be found HERE.
8AN ORB Direct Mount Regulators can be found HERE.
8AN ORB Fuel Pulse Dampers can be found HERE.
Fuel Pressure Gauge Adapters can be found HERE.

Appropriate fittings must be selected based on the specific application and type of hose to be used. Ample space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. To verify clearance, the dimensional drawings on the product pages can be used as a reference guide.
For any ports that are not going to be used, simply install an 8AN ORB plug (available on the 8AN ORB adapter page).

Manufactured with a large 0.69" internal bore, the fuel rail can support all necessary engine power requirements. The rail is CNC machined from solid 6061 aluminum, anodized and laser etched for a high quality surface finish. It is compatible with all fuel types including popular alcohol mixtures such as E85.
The Radium fuel rail eliminates the OEM 2-bolt inlet flange which uses a restrictive 0.22" (5.7mm) orifice. All four ports use -8AN ORB threads.

The fuel rail reuses the 3 OEM mounting spacers (Mitsubishi MD095402) to thermally insulate the fuel rail from the intake manifold. Furthermore, thermal insulating washers are provided for the stainless steel mounting hardware. Mounting bosses mimic the factory fuel rail for securing the cable(s) that pass by with the OEM brackets. 

This fuel rail is compatible with factory or OEM equivalent fuel injectors. If upgrading fuel injectors, consult your aftermarket injector supplier for details. Radium Engineering cannot specify any further injector dimensions other than stating ‘OEM equivalent’.


20-0533-02 Fuel Rail, Mitsubishi, Early 4G63
This option includes only the basic fuel rail as shown in the picture below. All fittings must be purchased separately. This is perfect for installers building a custom fuel system.


20-0533-PK Fuel Rail Plumbing, Mitsubishi, Early 4G63
The plumbing kit includes the items in the image below and is ideal when when using the factory regualtor and fuel lines. 

This kit replaces the restrictive OEM banjo bolt and runs a 6AN (3/8") hose directly from the fuel filter to the fuel rail. In addition, two FPR adapters are included to reuse either variation of the Mitsubishi OEM fuel pressure regulator. All necessary fittings are included for an easy bolt-in installation.


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