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W205 rear Differential question.

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Old Jan 11, 2026 | 02:09 PM
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AMG C63s
W205 rear Differential question.

What’s the difference between a 2018 C63s rear differential and a 2020 rear C63s Differential?

Looking at replacing my 2018 differential with a low mileage one out of a 2020
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Old Jan 11, 2026 | 03:41 PM
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From: Keep it simple - keep it OEM
AMG C63s Coupe
Other gear ratio ?
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Old Jan 11, 2026 | 04:19 PM
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2019 C63CS
They revised some internals. Different friction material or something, as the FL models no longer require the initial fluid change shortly after breaking-in.

It’s also faster acting in the FL, but that’s the new chassis dynamics system in the FL controlling it. Although they may have improved the clutch mechanism.

Keep in mind, though that sedan and coupe/cab have different ratios, so you have to get one from the right body style. The coupe/cab have a shorter ratio.
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