215 Vehicles
921K Bulb Fitment Guide
The 921K bulb is used by 215 vehicles from 6 makes. Commonly found in Reverse Light positions.
Positions
1
Reverse LightVehicles
215
Makes
6
Compatible Vehicles
| Model | Years | Positions | View |
|---|---|---|---|
| 128i | 2009–2013 | Reverse Light | Details |
| 135i | 2008–2013 | Reverse Light | Details |
| 328i | 2009–2011 | Reverse Light | Details |
| 328i xDrive | 2009–2011 | Reverse Light | Details |
| 335d | 2009–2010 | Reverse Light | Details |
| 335i | 2009–2011 | Reverse Light | Details |
| 335i xDrive | 2009–2012 | Reverse Light | Details |
| 335is | 2012–2012 | Reverse Light | Details |
| 525i | 2007–2007 | Reverse Light | Details |
| 525xi | 2006–2007 | Reverse Light | Details |
| 528i | 2008–2016 | Reverse Light | Details |
| 528i xDrive | 2009–2016 | Reverse Light | Details |
| 528xi | 2008–2008 | Reverse Light | Details |
| 530i | 2006–2007 | Reverse Light | Details |
| 535d | 2014–2016 | Reverse Light | Details |
| 535d xDrive | 2014–2015 | Reverse Light | Details |
| 535i | 2008–2016 | Reverse Light | Details |
| 535i GT | 2011–2014 | Reverse Light | Details |
| 535i GT xDrive | 2012–2015 | Reverse Light | Details |
| 535i xDrive | 2011–2016 | Reverse Light | Details |
| 535xi | 2008–2010 | Reverse Light | Details |
| 550i | 2007–2010 | Reverse Light | Details |
| 640i | 2012–2017 | Reverse Light | Details |
| 640i Gran Coupe | 2013–2017 | Reverse Light | Details |
| 640i xDrive | 2014–2017 | Reverse Light | Details |
| 640i xDrive Gran Coupe | 2014–2017 | Reverse Light | Details |
| 650i | 2008–2017 | Reverse Light | Details |
| 650i Gran Coupe | 2013–2017 | Reverse Light | Details |
| 650i xDrive | 2012–2016 | Reverse Light | Details |
| 650i xDrive Gran Coupe | 2013–2017 | Reverse Light | Details |
| 750i | 2007–2015 | Reverse Light | Details |
| 750i xDrive | 2009–2015 | Reverse Light | Details |
| 750Li | 2006–2014 | Reverse Light | Details |
| 750Li xDrive | 2009–2015 | Reverse Light | Details |
| 760i | 2006–2006 | Reverse Light | Details |
| 760Li | 2006–2010 | Reverse Light | Details |
| M3 | 2008–2012 | Reverse Light | Details |
| M5 | 2008–2014 | Reverse Light | Details |
| M6 | 2014–2017 | Reverse Light | Details |
| M6 Gran Coupe | 2014–2019 | Reverse Light | Details |
| X3 | 2007–2017 | Reverse Light | Details |
| X5 | 2008–2011 | Reverse Light | Details |
| Z4 | 2007–2016 | Reverse Light | Details |
| Model | Years | Positions | View |
|---|---|---|---|
| ELR | 2014–2016 | Reverse Light | Details |
| Model | Years | Positions | View |
|---|---|---|---|
| Terrain | 2016–2017 | Reverse Light | Details |
| Model | Years | Positions | View |
|---|---|---|---|
| Ion | 2003–2007 | Reverse Light | Details |
Frequently Asked Questions
The 921K bulb is used by 215 vehicles from 6 makes including BMW, Buick, Cadillac, Chevrolet, GMC. Browse the full compatibility list below.
Yes, LED replacements are available for the 921K bulb size. LED 921K bulbs offer brighter output, longer lifespan, and lower power consumption compared to halogen.
The 921K bulb is commonly used in these positions: Reverse Light. The exact position depends on your vehicle's make and model.
Standard halogen 921K bulbs typically cost $10–$30 for a pair. LED 921K conversion kits range from $25–$60. Premium brands may cost more but often offer better performance and warranty.
All 921K bulbs share the same base and fitment, but they vary in technology (halogen, LED, HID), brightness, color temperature, and brand quality. We recommend LED for the best balance of brightness and lifespan.