Engine Air Filter

The BMW Genuine Parts 13721720861 is a high-efficiency, serviceable engine air filter engineered to provide lasting protection for your BMW's engine. This filter's primary function is to capture dirt, dust, and other particulates, preventing them from entering the engine's combustion chamber. By ensuring a clean air supply, it helps maintain optimal engine performance, maximize fuel economy, and promote a more complete burn during combustion. A clogged or dirty air filter can significantly impact your vehicle's operation. Symptoms may include a noticeable loss in fuel economy and engine performance. In severe cases, a completely obstructed filter can starve the engine of air, leading to misfires, rough running, and potentially even oil contamination of air hoses and internal engine components. Regular replacement is crucial for engine health and efficiency. BMW recommends replacing engine air filters annually or every 10,000-15,000 miles. In arid or dusty environments, more frequent replacement may be advisable. Installation is typically straightforward, often requiring minimal tools, though some vehicles may have more complex airbox designs. This filter is compatible with a wide range of BMW models from approximately 1972 to 1997, including various 3 Series (E30, E36), 5 Series (E28, E34), 7 Series (E32), and 8 Series (E31) vehicles. Specific fitment details should always be confirmed using the vehicle selection tool or by consulting your owner's manual. A compatible filter service kit (Part #WA250-500) is also available separately to maintain the filter's performance over its lifespan.