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Old Mar 3, 2026 | 03:58 PM
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AMG C63s
C63s Coupe Differential Gears
Anybody know a Ring and Pinion Supplier for the Rear Differential. Not looking for a different ratio but just the factory ratio.
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Old Mar 3, 2026 | 04:32 PM
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I don't recall who makes the e-diff for AMG, but the ratio is 3.06:1 for the coupe/cab and 2.85:1 for the sedan/wagon.
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Old Mar 3, 2026 | 04:35 PM
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Originally Posted by superswiss
I don't recall who makes the e-diff for AMG, but the ratio is 3.06:1 for the coupe/cab and 2.85:1 for the sedan/wagon.

yeah I knew that one already just need to find a supplier, surely they aren’t only in a Mercedes
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Old Mar 3, 2026 | 04:40 PM
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So, AAM (American Axle & Manufacturing) apparently makes the EDU unit for the S E-Performance models. The EDU has the diff, 2-speed transmission and electric motor combined in a single unit. Getrag made the transaxle for the C190 AMG GT, which combines the Getrag DCT with the diff in a single unit. What I haven't been able to find is who makes the standalone version of the diff. AAM partners with Drexler, so could be that Drexler makes it.
Last edited by superswiss; Mar 3, 2026 at 04:42 PM.
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Old Mar 3, 2026 | 04:58 PM
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From: Keep it simple - keep it OEM
AMG C63s Coupe
Originally Posted by Struth
Anybody know a Ring and Pinion Supplier for the Rear Differential. Not looking for a different ratio but just the factory ratio.
worldwide or in your country ?
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Old Mar 3, 2026 | 05:01 PM
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Originally Posted by C63s_Jack
worldwide or in your country ?
USA preferably or worldwide
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Old Mar 3, 2026 | 05:52 PM
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Originally Posted by Struth
USA preferably or worldwide
From AI:


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Old Mar 4, 2026 | 12:53 AM
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From: Keep it simple - keep it OEM
AMG C63s Coupe
Originally Posted by Struth
USA preferably or worldwide
Aha - read more here in forum about Diff there is a Thread with link or ask a specialized CNC Shop for this things in your country. Or buy a used one or new OEM.
Now you have 4 options - lets go !

Originally Posted by jj18
From AI:
HAG 215 is this the OEM name of it never heard this or is AI fantasizing again? ZF sounds unusual for AMG.
They do more DIY or Getrag.
Last edited by C63s_Jack; Mar 4, 2026 at 01:30 AM.
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