Genuine OEM Volkswagen oil dipstick tube, part number 03L103634E. This tube serves as a guide for the oil dipstick, ensuring it can be accurately inserted into the engine oil pan for checking the oil level. It is positioned within the engine block assembly. The precise fitment and material of a genuine OEM tube prevent leaks and ensure the dipstick is correctly seated. This is critical for maintaining accurate oil level readings and preventing contamination.