2x WEBER 36 IDF venturi chokes size 28mm
$ 29
Part number: 71523
Made in: EU
2x Weber 36 IDF 28 mm Venturi Choke Tubes – MPN 71523
These 28 mm choke tubes, also called venturis, are used in genuine Weber IDF carburetors to establish the venturi restriction and pressure signal that supports fuel draw through the main circuit. The selected venturi size influences airflow capacity, main-circuit signal, mixture atomization, and the transition into higher-load operation. 28 mm venturi size is marked on the tubes.
The pair is intended for genuine Weber 36 IDF carburetors and also fits genuine Italian 40 IDF applications. Each tube has a supported outer diameter of 40.9 mm for fitment comparison. Replacing mismatched, damaged, or incorrectly sized venturis can help restore the carburetor’s intended internal geometry, but final calibration still depends on the complete jetting, emulsion, fuel level control, and engine specification.
These choke tubes do not fit FAJS or Spanish IDF carburetors.
This replacement part is suitable for carburetor service and restoration work where the original component is worn, damaged, or missing.
Reference/MPN: 71523.
Technical role: The 28 mm venturi choke tubes establish the restriction and pressure signal for the main fuel circuit in Weber IDF carburetors.
Service relevance: This pair can replace mismatched or damaged venturis in genuine Weber 36 IDF or Italian 40 IDF carburetors, with final calibration dependent on the complete fuel system.
What Is Included
- Two 28 mm venturi choke tubes for one carburetor
- Made in EU.
Important Fitment Note
Verify the carburetor family and manufacturer before purchase. These tubes are intended for genuine Weber 36 IDF carburetors and genuine Italian 40 IDF carburetors, not FAJS or Spanish IDF units. Confirm the 28 mm marking, the 40.9 mm outer diameter, and the venturi’s seating and retaining geometry against the removed part. Also compare the complete interface and locating features; thread checks are not applicable to the smooth venturi body unless the carburetor’s retaining arrangement uses a threaded retainer.
Compare the removed choke tube with the supplied part before installation, especially when the carburetor origin or identification is uncertain.
What you see is what you get
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