DELLORTO DRLA, DHLA AIR BY PASS SCREW 9926
$ 10.4
Part number: 9926
Made in: EU
DELLORTO DRLA, DHLA AIR BYPASS SCREW 9926
The Dellorto 9926 is an air-bypass adjustment screw for DHLA and DRLA carburetors. Its tapered tip regulates the bypass passage used during idle airflow balancing and low-speed circuit adjustment. Correct adjustment helps synchronize airflow between carburetor barrels without relying solely on throttle-stop position.
MPN 9926 — for Dellorto DHLA and DRLA applications. The screw is also identified for mixture-adjustment service, so it should be matched carefully to the original carburetor configuration. A damaged, bent, worn, or incorrectly seated screw can make idle synchronization difficult and may contribute to unstable idle response, uneven progression, or inconsistent low-speed tuning.
This replacement part is suitable for carburetor service and restoration work where the original component is worn, damaged, or missing.
Reference/MPN: 9926.
Technical role: Dellorto 9926 air-bypass adjustment screw for DHLA and DRLA carburetors, used to regulate bypass airflow during idle balancing and low-speed tuning.
Service relevance: Relevant for replacing a damaged, bent, worn, or incorrectly seated screw that can hinder idle synchronization or cause uneven low-speed response.
What Is Included
- Dellorto 9926 air bypass / mixture adjustment screw
- Made in EU.
Important Fitment Note
Verify the carburetor family as DHLA or DRLA and confirm the 9926 marking or equivalent original part reference. Compare the replacement with the removed screw for overall geometry, tapered tip profile, threaded interface, head and adjustment features, and seating arrangement. Confirm that the screw engages the correct bypass or mixture passage without forcing it, and check that the original spring, washer, or retaining arrangement—if used by the carburetor—can be transferred correctly.
Compare the removed part directly before installation; do not rely on carburetor family alone.
What you see is what you get
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