This is a diaphragm service replacement for all Radium adjustable fuel pressure regulators. Safe for all fuel types.

• RADIUM MPR (multi-pump regulator)
• RADIUM MPR-RA (multi-pump regulator)
• RADIUM FST-R (fuel surge tank regulator)
• RADIUM MPFST-R (fuel surge tank regulator)
• RADIUM FSTR-RA (fuel surge tank regulator)
• RADIUM DMR (direct mount regulator)
• RADIUM DMR-RA (direct mount regulator)
• RADIUM FPR-D (fuel pressure regulator damper)
• RADIUM FPRD-RA (fuel pressure regulator damper)
• RADIUM DFPR (dual fuel pressure regulator)
• RADIUM PUMP HANGERS with built-in FPRs (all)

NOTE: Unlike FPD (pulse damper) diaphragms, this FPR diaphragm has a ball seat in the underside. It can not be used in any fuel pulse dampers.