Genuine OEM Audi Oil Filter Housing Cap, part number 045115433D. This cap is designed to securely seal the oil filter housing, protecting the oil filter element and preventing oil leaks from the engine's lubrication system. It features a hexagonal top for easy removal and installation during oil changes. Weighing approximately 0.099 kg, it is constructed from durable plastic to withstand engine temperatures and oil exposure. Using a genuine OEM oil filter cap ensures a precise fit and a reliable, leak-free seal, critical for maintaining engine lubrication and preventing costly damage.