S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Parcel shelf speakers

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Old Dec 13, 2025 | 06:02 AM
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W221.156 S350
Parcel shelf speakers

A bit lost with figuring out the models for the HK rear parcel speaker unit.

MB lists four different part numbers, all priced differently. Any clue as to the difference- other than cosmetic?


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Old Dec 13, 2025 | 08:20 AM
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2008 CL550, 2022 EQB 300, 2023 EQS 450 4Matic
Can you remove yours far enough to double check the part number, or is this a improvement/modification project? I'm curious about this also, as mine has developed distortion, and I've just turned the fader to the front only and am ignoring the problem for now but need to fix it eventually.
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Old Dec 16, 2025 | 06:10 PM
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I would probably pull the speaker and replace with aftermarket
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Old Dec 17, 2025 | 04:29 AM
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S500
Originally Posted by nath_h
Can you remove yours far enough to double check the part number, or is this a improvement/modification project? I'm curious about this also, as mine has developed distortion, and I've just turned the fader to the front only and am ignoring the problem for now but need to fix it eventually.

they die because the amp isn't powerful enough to stop the speaker cones hitting their mechanical end stops - this clipping if pushed further can burn out the coils till 100% dead

when fitting aftermarket speakers you actually want easier to drive (more efficient speakers / lower wattage speakers) not some higher watt jokes that will give the under powered amp a harder life - unless you upgrade the amp which due to the stupid design merc choose is hard work and expensive

just fitting higher wattage speakers will

a) give lower sound output meaning you will likely push the amp even further beyond its pathetic limits
b) sound worse as the amp that couldn't cope before will struggle to get them to move them
c) be a waste of time and money
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Old Dec 17, 2025 | 11:21 AM
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W221 S500
Originally Posted by ezzat
A bit lost with figuring out the models for the HK rear parcel speaker unit.

MB lists four different part numbers, all priced differently. Any clue as to the difference- other than cosmetic?

Parcel shelves have several variations...
Individual rear seat... No centre headrest or belt. No Isofix.
Centre rear seat. No Isofix.
Individual rear seat... No centre headrest or belt. Isofix.
Centre rear seat. Isofix.

There may also be variations for leather covered and Premium audio, but not near my computer to accurately verify either the numbers you have given or the options.
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Old Dec 18, 2025 | 11:28 AM
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W221.156 S350
Originally Posted by nath_h
Can you remove yours far enough to double check the part number, or is this a improvement/modification project? I'm curious about this also, as mine has developed distortion, and I've just turned the fader to the front only and am ignoring the problem for now but need to fix it eventually.
Current parcel shelf speaker is ripped (as were all the other speakers) and the model I have is as per photo below. The wrecker from whom I bought the the HK set had the rear woofer unit sold separately prior so awaiting on another shipment of parts (and these are far and between apparently because demand for used w221 parts is almost non-existent, except for the Balkans, Russia and region, and Syria.


Last edited by ezzat; Dec 18, 2025 at 11:29 AM.
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Old Dec 20, 2025 | 12:52 PM
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2006 S350L
If you're in Europe I can send you my HK subwoofer from my 221 for free.

There is no way to replace the speaker with aftermarket don't waste time on that.

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Old Dec 20, 2025 | 05:44 PM
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W221.156 S350
Originally Posted by 735
If you're in Europe I can send you my HK subwoofer from my 221 for free.

There is no way to replace the speaker with aftermarket don't waste time on that.
You’re a legend! Thanks! Have an address in Germany if that works?
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Old Dec 21, 2025 | 04:20 AM
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2006 S350L
Originally Posted by ezzat
You’re a legend! Thanks! Have an address in Germany if that works?
No problem
DM me and I'll get it over to you on Monday

Mine came out as a result of a *massive/epic* Audio revamp 6 months ago, if you see the other huge thread about "Audison" you can see what we did
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