Float valve with ball 1.75mm for Solex 40 PII-4 Carburetor. Porsche 356 B/C / 912

Float valve with ball 1.75mm for Solex 40 PII-4 Carburetor. 
This precision float valve is an original Porsche part used in Solex 40 PII-4 carburettors on classic Porsche 356 B/C and 912 models. It consists of a finely machined needle, seat and spring calibrated for the correct 1.75 mm flow, ensuring that the fuel level inside the float chamber remains stable and accurate. A correct float valve is vital to maintain proper mixture, smooth idle and balanced performance.

Fits:
Porsche  356B / 356C  (Model: 1600 S90/SC, CARRERA, 587/1 692/3A)  1960-1965
Porsche 912 1.6L 1965 - 1969  (Engine code:  616/36/37)
Porsche 912 1.6L 1965 - 1969  (Engine code:  616/39/40)

Diagram ref no 46

Manufactured by Porsche to high OEM standards, this part ensures exact fitment, sealing and metering geometry — preserving the original fuel delivery behaviour of the engine.

• Function: Regulates fuel entry in float chamber of carburettor
• Fitment: Porsche 356 B/C; Porsche 912 (with Solex 40 PII-4)
• Position: Inside float chamber of carburettor body
• Benefits: Factory-exact metering geometry, correct fit/seal Installation
• Replace: during carburettor rebuild, verify seat & float level

Why and when to replace:
Over time the factory float valve may suffer from fuel contamination, corrosion or wear on the needle tip or seat. These issues can cause flooding, imbalanced mixture, rough idle or poor throttle response. Replace the valve when the original shows wear, leakage, improper float height or you’re performing a full carburettor overhaul. Using the genuine Porsche part restores the correct fuel-level control and ensures the engine runs true to the original specification.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

61610097101

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