Solex 40 ADDHE/PHH carburetor pump diaphragm early style
$ 13.7
Part number: ST1104
Made in: Italy
Solex 40 ADDHE/PHH Carburetor Pump Diaphragm Early Style ST1104
This pump diaphragm is used in the accelerator-pump circuit of Solex 40 ADDHE/PHH carburetors. During rapid throttle opening, the diaphragm displaces fuel through the pump circuit to provide transient enrichment and help prevent hesitation before the main circuit responds.
This replacement part is suitable for carburetor service and restoration work where the original component is worn, damaged, or missing.
Reference/MPN: st1104.
Technical role: Early-style pump diaphragm for the accelerator-pump circuit of Solex 40 ADDHE/PHH carburetors.
Service relevance: It displaces fuel during rapid throttle opening to provide transient enrichment and help prevent hesitation.
What Is Included
- One Solex ADDHE/PHH carburetor pump diaphragm, early style, MPN ST1104
- Made in Italy.
Important Fitment Note
Verify the carburetor family and the required early-style pump diaphragm before ordering. Check the ST1104 code or equivalent marking, the outer bolt-hole pattern, diaphragm shape, center retainer and pump interface, and the seat or mounting arrangement. Compare the replacement directly with the removed diaphragm, including perimeter geometry and central hardware clearance.
Verify the pump-cover geometry and diaphragm style against your original part before installation. Solex ADDHE/PHH versions and service configurations can differ; confirm that the mounting pattern and pump interface match exactly.
What you see is what you get
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