Genuine OEM Hyundai Oil Level Gauge Guide O-Ring, part number 266142B000. This small but critical seal is designed to create a tight, leak-proof connection for the oil level gauge guide tube. It prevents oil from escaping the engine, ensuring accurate oil level readings and protecting engine components. Made from durable, oil-resistant material, it maintains its sealing properties under engine operating conditions. Choosing a genuine OEM O-ring guarantees the correct material composition and dimensional accuracy for reliable, long-term sealing performance.