We will notify you by email when the product is available again!
Questions?
Helix CFMK165 MB.3 (FDM) adapter rings for Mercedes-Benz
Helix CFMK165 MB.3 is a FlexMount165 adapter ring set that allows compatible 6.5-inch / 165 mm HELIX COMPOSE speakers to be installed in the original speaker locations of Mercedes-Benz vehicles. The vehicle-specific mounting simplifies speaker upgrades and helps ensure a neat installation.
Select the speakers suitable for your vehicle and audio system from the list below. The set includes two adapter rings, two speaker seals, and installation accessories.
Compatible speakers
- Helix Ci7 W165FM-S3
- Helix Ci3 W165FM-S3
- Helix Ci3 W165FM-S2
- Helix Ci3 K165.2FM-S3
- Helix Ci3 K165.2FM-S2
- Helix Ci3 C165.2FM-S3
Mercedes-Benz compatibility
In the following models, the adapters fit the front and rear speaker locations of the Burmester system as well as the front and rear midrange speaker locations of the standard audio system, unless otherwise stated for the model.
- A-Class W177: 05/2018–01/2024.
- A-Class W177 MOPF: from 01/2024.
- B-Class W247: from 01/2019.
- CLA C118: 03/2019–10/2024.
- CLA W174 / 178: from 04/2025.
- CLA X118: 03/2019–10/2024.
- EQA H243: from 01/2021, front and rear midrange speaker locations of the standard audio system only.
- GLA H247: 01/2020–01/2024.
- GLA H247 Facelift: from 01/2024.
- GLB X247: 02/2019–03/2023.
- GLB X247 Facelift: from 01/2024.
Check the vehicle model code, production date, and original audio system before ordering. You can also check compatibility using the Audiotec Fischer COMPOSE compatibility search.
- Model: Helix CFMK165 MB.3 (FDM).
- Product type: vehicle-specific speaker adapter ring set.
- Mounting system: FlexMount165.
- Compatible speaker size: 6.5 inches / 165 mm.
- Speaker set: HELIX COMPOSE, models listed above.
- Vehicle make: Mercedes-Benz.
Package contents
- 2 × FlexMount165 adapter rings.
- 2 × speaker seals.
- Installation accessories.