Original Malpassi replacement diaphragm for the Malpassi Filter King Fuel Filter and Pressure Regulator 85 mm.
This original Malpassi diaphragm replaces your worn-out diaphragm in the 85 mm versions of the Malpassi / Filter King fuel pressure regulators.
This is the version with six screw holes.
The version with four screw holes is usually the 67 mm version.
The diaphragm for that 67 mm version can be found HERE.