Genuine OEM Hyundai Oil Level Indicator O-Ring, part number 2661525000. This essential O-ring is designed to provide a tight, leak-proof seal for the oil level indicator bar, preventing oil seepage from the engine. It is installed where the oil dipstick enters the engine block or oil pan. Weighing approximately 0.73 grams, this O-ring is made from a durable, oil-resistant elastomer. Using a genuine OEM O-ring ensures the correct material composition, precise dimensions, and optimal sealing properties to maintain engine fluid integrity and prevent costly leaks.