- Durable Construction: The automotive door lock actuator is made from a robust combination of metal and plastic, providing exceptional wear resistance, damage protection, and oxidation resistance. Designed for longevity. - Compatible Model: Specifically designed for X5 E53 models from years 2000 to 2007. This actuator fits the left front door lock cylinder, part number 51218402537. - Essential Functionality: Door lock actuators are crucial components that control the locking mechanisms of your vehicle's doors. Each door is equipped with its own actuator, and if a door fails to lock or unlock, a malfunctioning actuator could be the root cause. - Superior Reliability: Manufactured using materials that meet stringent OEM specifications, ensuring high reliability and performance. This quality guarantees that your vehicle's doors will lock and unlock smoothly and conveniently. - Practical Applications: 1. Replace a faulty actuator to restore full functionality to your vehicle's left front door, enhancing security and peace of mind. 2. Ideal for DIY enthusiasts looking to upgrade their vehicle's locking system with reliable, high-quality components. This actuator is designed to enhance the functionality and reliability of your vehicle’s locking system, ensuring a hassle-free experience whenever you need to use your doors.