Radium Engineering DMR 11mm Bore 39mm Spacing Fuel Pressure Regulator - Green

Two interchangeable orifices are included with calculated flow diameters to match the fuel pump flow to the regulator. Furthermore, this added precision will resist diaphragm flutter and optimize pressure stability. See the installation instructions for more details.

Either of the lower two opposing -6AN ORB ports can be used for the return line.

NOTE: These ports CANNOT be used for fuel pressure gauge or sensor as these are low pressure ports. Using the included fittings, simply install the 6AN male into the port that points in the ideal direction and install the plug into the remaining port. Fuel pressure is dialed in using the preload set screw on top.

The 1:1 vacuum reference high flow design has been tested to regulate over 1,400 liters per hour. Furthermore, with the addition of interchangeable return orifices, the DMR can be used most any horsepower level. Compatible with all gasoline and ethanol blends of fuel. If using 3AN hoses for vacuum lines, a compatible adapter is sold separately that allows hooking up a 3AN hose for the vacuum signal.

For OEM Fuel Rails with a 2-bolt flange connection choose: 20-0418-00/01

This variation can be used with some OEM fuel rails to replace the factory regulator. The included adapter mates to an 11mm bore and M6 bolt holes that are symmetrically spaced 39mm apart. See photo below:

This architecture is common to the following engines:

Toyota 2RZ-FE
Toyota 3RZ-FE
Toyota 4E-FTE
Toyota 4A-GZE
Toyota 4A-GE
Toyota 4A-GELU
Toyota 2JZ-GTE (not compatible with OEM intake manifold/throttle body)
Saab 9-2X Aero 2.0L
Subaru EJ20 GDA WRX
Mazda MX-5 BP
etc.
While the DMR will properly secure to the these OEM fuel rails, compatibility has NOT been verified when installed with the intake manifold on the engine.
In some cases, there will be an interference preventing the use of the DMR. As an example, this adapter will fit onto the Mitsubishi EVOX 4B11T fuel rail, but it interferes with the MIVEC solenoid. Reference the dimensions below to determine if the DMR can physically reside in your specific application.

INCLUDED IN THE DMR KIT:

Fuel Pressure Regulator (Black or Green Top)
Inlet Adapter Fitting
6AN ORB to 6AN Male (for return line)
6AN ORB Plug
Interchangeable Return Orifices
Stainless Steel Hardware
FKM Viton O-ring