Description
A worn or damaged idle mixture screw can throw off your carburetor’s fuel-air ratio, causing rough idle and unpredictable throttle response. The YOST Performance CV Carburetor Idle Screw replaces the original component with precision-engineered stainless steel construction, ensuring reliable adjustments and long-term durability. Whether you’re fine-tuning for the track or maintaining consistent street performance, this U.S.-manufactured screw delivers the precision control serious racers and mechanics demand.
- Stainless steel construction
- Includes spring, washer, O-ring
- Knurled and slotted head
- Easy manual adjustment
- Fits CV40 carburetors
- Fits CV44 carburetors
- Made in U.S.A.
- MPN: CVMSS









