O-ring idle mixture screw single barrel carburettor - rubber (2.5x1,6mm)

This small rubber sealing gasket, measuring 2.5 mm in diameter and 1.6 mm in thickness, is fitted to the adjustment screw of a single-barrel carburetor. It ensures the sealing of the intake system at the screw, preventing unwanted air leaks and guaranteeing precise and stable adjustment of the air/fuel mixture.

A worn or missing gasket can cause unstable idle, adjustment difficulties, and poor engine operation.