Genuine OEM Porsche O-Ring, part number 99970750440. This O-ring is designed to seal the camshaft throttle control, ensuring proper function and preventing leaks within the engine assembly. Its precise dimensions and material composition are critical for maintaining the integrity of the camshaft throttle control system. Genuine OEM O-rings are manufactured to exact specifications, guaranteeing a perfect fit and reliable sealing performance, which is crucial for preventing oil or air leaks and maintaining engine efficiency.