The two-part ring K 67013 is a split/clamp style sealing or locating ring used on the engine’s air branch connections to allow assembly around ducts or piping without disassembly of long runs. Its two-piece design enables quick installation and ensures even clamping force around flanges or hoses, reducing air leaks and vibration-induced loosening. Manufactured from corrosion-resistant metal or coated steel, this ring is important for maintaining intake or scavenging efficiency; inspect for distortion, corrosion or loose fasteners during routine service to preserve air system performance.