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Description
HELIX Ci7 M100FM-S3 + HELIX CFMK100 MB.5 BundleMatched speaker and vehicle specific adapter bundle. Speaker: HELIX Ci7 M100FM S3 (CI21401) Adapter: HELIX CFMK100 MB. 5 (CI41006) Vehicle compatibility Please check your make, model, year, sound system and speaker position before ordering. Mercedes C Klasse S206 02 2021 today Front Door (Advanced Sound System) Mercedes C Klasse S206 02 2021 today Front Door (Burmester Sound System) Mercedes C Klasse S206 02 2021 today Front Door (Standard
Matched speaker and vehicle-specific adapter bundle.
- Speaker: HELIX Ci7 M100FM-S3 (CI21401)
- Adapter: HELIX CFMK100 MB.5 (CI41006)
Vehicle compatibility
Please check your make, model, year, sound system and speaker position before ordering.
- Mercedes C-Klasse S206 02/2021-today — Front Door (Advanced Sound System)
- Mercedes C-Klasse S206 02/2021-today — Front Door (Burmester Sound System)
- Mercedes C-Klasse S206 02/2021-today — Front Door (Standard Soundsystem)
- Mercedes C-Klasse W206 06/2021-today — Front Door (Advanced Sound System)
- Mercedes C-Klasse W206 06/2021-today — Front Door (Burmester Sound System)
- Mercedes C-Klasse W206 06/2021-today — Front Door (Standard Soundsystem)
- Mercedes CLE 236 02/2023-today — Front Door (Advanced Sound System)
- Mercedes CLE 236 02/2023-today — Front Door (Burmester Sound System)
- Mercedes CLE 236 02/2023-today — Front Door (Standard Soundsystem)
- Mercedes E-Klasse All Terain X214 02/2023-today — Front Door (Advanced Sound System)
- Mercedes E-Klasse All Terain X214 02/2023-today — Front Door (Burmester Sound System)
- Mercedes E-Klasse All Terain X214 02/2023-today — Front Door (Standard Soundsystem)
- Mercedes E-Klasse S214 02/2023-today — Front Door (Advanced Sound System)
- Mercedes E-Klasse S214 02/2023-today — Front Door (Burmester Sound System)
- Mercedes E-Klasse S214 02/2023-today — Front Door (Standard Soundsystem)
- Mercedes E-Klasse W214 07/2023-today — Front Door (Advanced Sound System)
- Mercedes E-Klasse W214 07/2023-today — Front Door (Burmester High-End 4D-Surround-Soundsystem)
- Mercedes E-Klasse W214 07/2023-today — Front Door (Burmester Sound System)
- Mercedes E-Klasse W214 07/2023-today — Front Door (Standard Soundsystem)
- Mercedes EQE V295 01/2022-today — Front Door (Burmester Sound System)
- Mercedes EQE V295 01/2022-today — Front Door (Standard Soundsystem)
- Mercedes EQE X294 09/2022-today — Front Door (Advanced Sound System)
- Mercedes EQE X294 09/2022-today — Front Door (Burmester Sound System)
- Mercedes EQE X294 09/2022-today — Front Door (Standard Soundsystem)
- Mercedes EQS V297 01/2021-today — Front Door (Advanced Sound System)
- Mercedes EQS V297 01/2021-today — Front Door (Burmester Sound System)
- Mercedes EQS V297 01/2021-today — Front Door (Standard Soundsystem)
- Mercedes GLC X254 06/2022-today — Front Door (Advanced Sound System)
- Mercedes GLC X254 06/2022-today — Front Door (Burmester Sound System)
- Mercedes GLC X254 06/2022-today — Front Door (Standard Soundsystem)
- Mercedes S-Klasse W223 12/2020-today — Front Door (Burmester Sound System)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Perfect fit for 2020 Subaru Outback
Fit my 2020 Subaru Outback perfectly. 5-minute install. Works great. My previous cabin filter was scary to see.
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Reviewed in the United States on December 16, 2025
★★★★★ 5
Good, inexpensive replacement filter
I've used these filters for a couple years (four replacements) on my Subaru Crosstrek, and they seem to do the job well, probably as well as the original. I generally remove and clean them every three months, and replace them every six.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Save some money by doing your own cabin filter change! (You won't notice a difference).
So, one day I was getting an oil change at the dealership, and the associate told me that cabin filter was pretty dirty, which I believed because of the places I take the car, and she said that they could change it while they were finishing up the rest of their inspection, since they already had it apart. I asked her "How much?", and then we both had a laugh when she said "$90." I told her I'd take care of it.
It took two days for Amazon to get a replacement filter to me, twenty minutes to watch a You Tube video showing how to replace the cabin filter on my car (I watched it twice), and then about twenty-five minutes to replace the filter itself--I keep a messy glove compartment, so a good portion of the time was loading and unloading that nightmare.
In the end, under $15 for the filter, maybe 45 minutes to watch and replace, and the cabin filter hasn't been this good since I first bought the car.
This replacement version was as good as the OE filter, fit exactly the same, there's no difference in airflow that I can tell, and so far (6 months later), it seems to be holding up pretty well. We'll see what it is like after a year. I did get the oil changed about a week ago, and the technician didn't raise any alarms about the filter, so everything seems to be working.
$90 for a new filter? You can do it yourself cheaper.
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Reviewed in the United States on April 6, 2026
★★★★★ 4
Fresh Air Upgrade for My 2024 Impreza
Installed this in my 2024 Subaru Impreza, and it fit perfectly—no issues. The air smells noticeably cleaner now, and it took less than 10 minutes to swap out. The carbon and HEPA filtration does a great job clearing out odors, dust, and pollen—definitely an upgrade over the factory filter.
The build feels sturdier than the OEM version, though it does have slightly fewer pleats. Might mean it needs replacing a bit sooner, but for the price and performance, I’m fine with that tradeoff.
If you’re looking for a quick, affordable way to improve your cabin air, this one’s a solid pick.
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Reviewed in the United States on June 26, 2025
★★★★★ 5
Well built, good fit.
I like it so well, I just bought two more to keep on the shelf for when the price doubles. Seems better built than oem, but I don't know how you can judge the filtration; seems good though.
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Reviewed in the United States on May 6, 2026