Genuine OEM Volkswagen Oil Dipstick With Pipe, part number 04B115601C. This assembly is used to measure the engine oil level, ensuring proper lubrication and engine health. It is located in the engine bay, as shown by number 4 in the diagram. The part consists of the dipstick and its guiding pipe. Genuine OEM oil dipsticks are calibrated for precise readings and are made from materials resistant to engine oil and heat.