739-13002 Needle retainer screw

This Mikuni needle retainer screw is a specialized fastener used within the slide mechanism of Mikuni carburetors. It plays a critical role in securing the jet needle in its proper position, ensuring consistent fuel metering across the RPM range. Precision-manufactured from high-grade steel, this screw is designed to resist loosening under the constant vibration of a V-twin engine. Using genuine Mikuni hardware for internal carburetor components prevents potential failures that could lead to poor engine performance or mechanical damage. It is a vital part for any precise carburetor tuning or repair project. Sold individually.