Door Lock Barrel for BMW E53 X5 Left Driver Side 51217035421
Restore Reliable Entry to Your BMW X5 E53
Replace damaged or sticking ignition housings with this direct-mount driver side door lock cylinder, engineered to restore smooth key operation without modifying vehicle panels or wiring. Built with a silver-finished metal and plastic composite shell, the barrel aligns precisely with factory mounting brackets and resists daily corrosion while maintaining OEM styling.
Benefits & Practical Tips
- Direct Fit Upgrade: Drops into place as a straightforward swap for jammed, worn, or water-damaged cylinders, saving you labor costs and dealership wait times.
- Verified Alignment: Cross-reference the embossed identifier on your current assembly with 51 21 7 035 421 before installation to confirm exact model matching for 2000–2006 production runs.
- Ready to Install: Two precision-cut keys ship pre-matched to the new tumbler sequence, allowing immediate functional testing once secured in the door mechanism.
Product Specifications
- Part Reference: 51 21 7 035 421 | 51217035421
- Vehicle Placement: Left, Front Driver Side
- Construction: Metal & Plastic Composite
- Finish: Silver
- Dimensions: 8.9 cm L × 4.3 cm W × 6.4 cm H
- Total Weight: 0.25 kg
Package Includes
- 1 × Driver Side Door Lock Cylinder Barrel
- 2 × Replacement Keys
Warnings & Reminders
Verification Required: Compatibility listings serve as a reference only. Compare the stamped numbers on your existing lock against 51217035421 to ensure correct fitment before purchasing.
Handling Guidance: Keep the internal cam and pin tumblers free from impact during removal. Retain your original cylinder for dimensional verification until the replacement turns the key smoothly and latches correctly.
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