Genuine OEM Audi Engine Oil Filler Pipe, part number 4M0115301G. This pipe serves as the access point for adding engine oil, directing it safely into the engine's crankcase. It is typically located on the upper part of the engine assembly. Constructed from durable material, it measures approximately 0.22 meters in length. Using a genuine OEM oil filler pipe ensures a leak-free seal and proper routing, which is essential for maintaining engine lubrication and preventing oil leaks or contamination.