Air adjuster screw spring for Keihin carburetors.
Genuine Keihin high quality part.
Keihin part number: W1711-416-9900 / 018-090.
This fits:
- all Keihin PWK carburetors
- all Keihin PWM carburetors
- all Keihin PJ carburetors
- Keihin PE 20-38 carburetors.
Complete as pictured.