[Compatibility & Fitment] This front left door locking cylinder is designed as a direct replacement for models including 325ci 325i 325xi 330ci 330i 330xi and m3 (2001-2006). it features oem part numbers 51217019975 51218244049 and 51217035421 ensuring perfect fit and function just like the original factory lock. the precise engineering guarantees seamless integration with your vehicle's locking system. [Premium Quality Construction] Crafted from high-grade aluminum alloy this driver side door locking cylinder offers exceptional durability and . the robust construction ensures long-lasting performance even under heavy daily use. its precision-machined components provide smooth operation and reliable security for your vehicle. [Performance Guarantee] Manufactured to meet or exceed oem specifications this door locking cylinder assembly ensures optimal performance. the materials and strict quality control processes guarantee a product that will restore your vehicle's security system to condition. comes complete with all necessary components for a perfect fit. [Easy Installation & Use] Designed for straightforward installation this locking cylinder comes with two keys for immediate use. the simple yet effective design allows for easy control of your car's locks making vehicle security effortless. its user-friendly operation provides convenient access while maintaining high security standards. [Enhanced Security Features] This replacement locking cylinder delivers superior security with its precision-cut keyway and tumblers. the advanced design prevents unauthorized entry while ensuring smooth key operation. the durable mechanism withstands wear and tear maintaining reliable performance over time., Manufacturer: Jelquix