Radium Engineering FPR Adapter – 8AN ORB 11mm Bore 32mm Spacing M5

The Radium Engineering FPR Adapter – 8AN ORB, 11mm Bore, 32mm Spacing, M5 allows a compatible OEM fuel pressure regulator or fuel pulse damper to be reused with an aftermarket fuel rail. Instead of replacing the factory-style regulator simply because the original rail is no longer being used, this adapter provides the correct mounting interface and converts the regulator connection to an 8AN ORB male fitting.

Machined from billet 6061 aluminum and anodized for corrosion resistance, the adapter features an 11mm bore, 32mm mounting spacing, and M5x0.8 regulator threads. The design also allows the regulator to be clocked into the proper position during installation, which is helpful when packaging an aftermarket fuel system in a tight engine bay.

This adapter is commonly used with compatible factory regulators found on Nissan RB26DETT, RB25DET, RB20DET, SR20DET, KA24DE and CA18DET applications, as well as select Subaru, Saab and Mazda RX-7 setups. The aftermarket fuel rail must have an 8AN ORB female port, and the regulator itself must match the 11mm bore, 32mm spacing and M5 mounting configuration.