The CM4717 Fuel Injector Seal O-Ring Kit (10-piece set) is an indispensable seal for engine maintenance, designed to solve problems such as fuel leakage and vacuum loss caused by aging seals at the upper and lower ends of the fuel injector. The kit contains 10 O-rings and is suitable for a variety of fuel injection system structures. Under the prolonged effects of high temperatures, high pressure, and fuel, the original fuel injector seals are prone to aging, deformation, and cracking, which can affect fuel injection accuracy and engine stability. The CM4717 seal O-ring is made from high-quality synthetic rubber, offering exceptional heat resistance, oil resistance, and anti-aging properties, making it suitable for long-term use in harsh engine environments. It restores the fuel system's excellent sealing performance, addressing fuel injection issues at their source, and ensuring reliable engine operation.