Original BMW Left Taillight Bulb Carrier for BMW 228i, 230i, M235i, and M240i (2014–2017)

The Original BMW left taillight bulb carrier holds the bulbs for the left rear lamp on the F22 2 Series coupe, covering the 228i, 230i, M235i, and M240i from 2014–2017. BMW names it the left bulb socket and assigns it part number 63-21-7-370-291. It weighs 390 g (about 0.9 lb). BMW sells it individually, and production of this number began in November 2013. A taillight bulb carrier positions each bulb behind its section of the lens and carries the contacts that connect the bulbs to the wiring harness.

Original BMW Parts carry a 24-month parts warranty.

This carrier is for the left side only, so check which taillight you are working on before you order. BMW keeps one number across every F22 version in the fitment, and the xDrive cars share it with their rear-wheel-drive counterparts. A 2014 228i and a 2017 M240i xDrive take the identical left carrier, even though the 2017 cars moved to new engines.

Technical Details

• Manufacturer: BMW (Original BMW Parts)
• Part number: 63-21-7-370-291
• BMW part name: bulb socket, left
• Position: left taillight
• Weight: 390 g (0.9 lb)
• Production start: November 2013
• Chassis: F22
• Sold individually
• Warranty: 24 months

Common Questions

Does this carrier fit the right taillight?
No. BMW designates this number for the left side, and the right side uses a different part.

What problems point to a failing taillight socket?
Corrosion on the electrical contacts, water inside the lamp housing, and repeated bulb failures are common causes. Moisture buildup inside the lens often means water has reached the contacts.

Is this the same part for the 228i and the M240i?
Yes. BMW uses this one number for the 228i, 230i, M235i, and M240i in the fitment, including the xDrive versions.

Fitment & Compatibility

Use the fitment table below to confirm the exact year, make, model, submodel, and any application notes before ordering. PMB Performance can confirm this against your VIN, backed by more than 20 years of parts and fitment work.