URO 51-21-7-074-440 Door Lock Cylinder Replacement

The URO Parts 51-21-7-074-440 is a direct-fit replacement door lock cylinder designed to restore proper key-operated locking and unlocking function to your vehicle's door. This cylinder serves as the mechanical interface between the door key and the internal locking linkage, allowing manual key access when power locks are inoperative or as a primary locking mechanism.

URO Parts engineers their components to meet or exceed OEM specifications, making this a reliable alternative to dealer-sourced parts at a more accessible price point. The cylinder is precision-machined for a consistent, smooth key action and durable long-term operation.

Key Features:

• Direct OEM replacement — matches original fit, form, and function
• Restores key-operated door lock and unlock functionality
• Precision-fit design for seamless installation into the door handle assembly
• Manufactured to OEM specifications by URO Parts
• Cross-references to BMW OEM part number 51-21-7-074-440

This door lock cylinder is a straightforward replacement for a worn, damaged, or broken original cylinder. Installation typically involves removing the door panel and disconnecting the existing cylinder from the door handle assembly and lock linkage rod.