Expert Verdict (2026) - Why Buy?
The GROM BMWTB3 is the trunk-mount counterpart to our BMWSB3 kit, built for BMW and Mini owners whose factory stereo includes Navigation or DSP processing — conditions the dash-mount kit can't support. It also extends compatibility to select Range Rover HSE models with a longer cable for flexible trunk installation.
Quick facts: GROM-BT3-BMWT · Compatible with select BMW 3/5/7 Series, M3, M5, X3, X5, Z3, Z4, Z8, Mini Cooper, and Range Rover HSE (1997–2010, Nav/DSP supported) · Trunk install · Hands-free calling (HFP) and wireless streaming (A2DP) · 1-year replacement warranty.
Add Bluetooth hands-free calling and wireless music streaming to your factory car stereo with the GROM-BT3 integrated Bluetooth adapter.
Compatible with: Select BMW / Mini 1998-2006 factory stereos — trunk install.
- Hands-free calling (HFP)
- Wireless music streaming (A2DP) from any smartphone
- Steering wheel and stereo control compatible
- Includes: GROM-BT3 module, vehicle-specific data harness, microphone, installation manual
AUX-In cable sold separately.
Vehicle Compatibility
| Model |
Years |
Notes |
| 3 Series |
1999–2005 |
All trims |
| 3 Series Coupe/Convertible |
2006 |
All trims |
| 5 Series |
1997–2003 |
All trims |
| 7 Series |
1999–2001 |
All trims |
| M Coupe / M Roadster |
1999–2002 |
All trims |
| M3 |
1997–2006 |
All trims |
| M5 |
2000–2003 |
All trims |
| X3 |
2004–2010 |
All trims* |
| X5 |
2000–2006 |
All trims |
| Z3 |
1997–2002 |
All trims |
| Z4 |
2003–2008 |
All trims* |
| Z8 |
2000–2003 |
All trims |
| Mini Cooper |
2002–2005 |
— |
| Mini Cooper Convertible (R52/R53) |
2004–2008 |
— |
| Range Rover HSE |
2002–2004 |
Navigation 16:9; 2004 may need wire modification |
Notes: *BMW X3 (E83, 09/05+) and Z4 (E85/E86, 02/06+ or 05/06+) with DSP navigation, CD changer, and iPod connection require dealer stereo reprogramming ("vehicle order") for audio to work. For vehicles with SiriusXM, the XM radio must be disconnected. BMW CD43 stereo is not compatible. Need the behind-the-radio version instead? See our BMW/Mini Dash kit.
