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Sortiment» Pressure Regulator Malpassi Filter King 8 mm Alu
Pressure Regulator Malpassi Filter King 8 mm Alu
Pressure Regulator Malpassi Filter King 8 mm Alu
Art.No: FK5
Price: 99.50 EUR 119.50 EUR
Availability: Delivery time about 10 days
Filter King by Malpassi is an extremely reliable pressure regulator with a built-in fuel filter, specifically designed for carbureted engines. This particular model (FK5) is equipped with a strong aluminum bowl, making it approved for use in competition cars and motorsport where glass bowls are often prohibited for safety reasons. A steady fuel flow and correct pressure are absolutely crucial to prevent the carburetor from flooding, resulting in smoother engine running and improved fuel economy.
Technical Specifications:
- Connections (in/out): Hose nipple for 8 mm fuel hose
- Fuel pressure gauge port: Yes, 1/8" NPT thread. A brass plug is included if the port is not used. (Thread tape or Loctite is recommended for sealing).
- Bowl Material: Aluminum (Approved for racing/competition use)
Adjusting the fuel pressure:
The pressure is fully adjustable from the top of the regulator. By removing the dome nut, loosening the lock nut, and turning the adjustment screw inwards (clockwise), you tighten the spring and thereby increase the fuel pressure. Since different fuel pumps deliver varying base pressures, the pressure must be checked and adjusted upon installation using a fuel pressure gauge (e.g., Part No: 305,1) mounted directly in the regulator's port. Please note that the engine must be running during pressure adjustment.
Included in delivery:
- Pressure Regulator Filter King (Malpassi) with aluminum bowl and paper filter
- Mounting bracket and required screws
- Brass plug for the gauge port (if a gauge is not installed)



















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