Genuine OEM Volkswagen Engine Oil Spray Jet, part number 03N103157C. This small but vital component is installed within the engine block, typically directing a stream of oil towards the underside of the pistons or other critical moving parts. Its function is to provide additional lubrication and cooling, which is essential for preventing overheating and reducing wear in high-stress areas. Weighs 0.019 kg and measures 0.03m in length. Using a genuine OEM spray jet ensures the correct spray pattern and flow rate, critical for effective engine lubrication and longevity.