A replacement diaphragm from the Italian manufacturer Malpassi, specifically designed for their larger Filter King pressure regulators. The diaphragm is the heart of the regulator and is responsible for keeping the fuel pressure to your carburetor steady and constant under all driving conditions. If your regulator starts leaking or if you have trouble setting a stable fuel pressure, it is often because the diaphragm has dried out or cracked and needs replacing.

Technical Specifications:

• Type: Replacement diaphragm
• Compatibility (diameter): Intended for Filter King regulators with an 85 mm outer diameter on the upper bell/housing.
• Part Number: FM85

Fits the following regulators (among others):

• Malpassi Filter King 8 mm Large Alu (FK6)
• Malpassi Filter King 8 mm Large Glass (FK7)

Tip: Measure the diameter across the top of your pressure regulator before ordering. If it measures 85 mm, this is the correct diaphragm. If it measures 67 mm, you will need the smaller diaphragm (Part No: FM67).