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If you look for one of the VIN decoders, you can get a list of all of the equipment on your car. That said, I can't speak to the UK specifically, but given the long list of different equipment required for the SBC system, I can't imagine MB would have fit it to the W210 in the UK and not elsewhere. To my knowledge it's confined to the W211. You could also peruse the W211 forum looking for a picture of the SBC pump and then you know what to look for under your hood.
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