Compatibility and fitment - Applications: BMW 545i E60 (2004-2005) V8 4.4L; BMW 645Ci E63 (2004-2005) V8 4.4L; BMW 745i E65 (2004-2005) V8 4.4L; BMW 745Li E65 (2004-2005) V8 4.4L; BMW X5 E60 (2004-2006) V8 4.4L. - OE Numbers: 13627566988 / 7566988 / 13627524136 / 7524136. Key benefits - Improves fuel efficiency and reduces emissions when replacing a faulty MAF sensor. - Addresses idling instability, slow or inconsistent acceleration, and black smoke from the exhaust. - Provides a direct replacement that restores proper air mass measurement for better engine performance. Product features - High quality materials designed for durability and longer lifespan. - Made from a combination of quality plastic and metal to ensure reliable operation. - Direct replacement that matches the original fit and function for a proper seal and electrical connection. Installation and compatibility notes - Direct replacement for a proper fit and easy installation. - The MAF Sensor is located beside the air intake box inside the engine bay, making replacement straightforward for experienced DIY maintenance or professional installation. Use scenarios - Scenario 1: A BMW owner notices rough idle and sluggish response. Replacing the MAF sensor with this part can restore smooth idle and responsive acceleration. - Scenario 2: Vehicle shows increased fuel consumption or emits visible black smoke. Replacing the sensor can help normalize fuel trim and reduce emissions. - Scenario 3: As part of routine maintenance on affected BMW models, especially when performing air intake or engine control system service, to maintain optimal performance and efficiency. Overview - This MAF sensor is a direct, compatible replacement for listed BMW models, using durable materials to ensure reliable performance and long service life. It is designed to restore proper air measurement, contributing to smoother operation, better fuel economy, and reduced emissions.