Part Number Breakdown
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A0009060903 (also written as 000 906 09 03 or A 000 906 09 03) → Genuine Mercedes-Benz OEM part number for the complete alternator.
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439891 → Valeo original equipment manufacturer part number (new unit code).
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CG25S035 → Valeo series / internal part number (CG25S high-efficiency family, specific to this 250 A configuration).
Key Specifications
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Output: 250 A
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Voltage: 14 V charging system (12 V nominal)
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Pulley: 6-groove (6PK) with overrunning alternator pulley (OAP / freewheel clutch)
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Rotation: Clockwise
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Regulator: Integrated LIN/COM (smart charging controlled by vehicle ECU)
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Mounting: 4-point direct bolt-on
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B+ Connection: M8 stud
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Weight: ≈7.4–7.6 kg
Typical Compatible Models
This alternator is mainly used in recent Mercedes models with the M256 3.0L inline-6 turbo engine (mild-hybrid versions):
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S-Class (W223 / V223) – S 450 4MATIC, S 500 4MATIC (2021+)
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E-Class (W213 / S213 facelift) – E 450 4MATIC (2021–2023)
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CLS-Class (C257) – CLS 450 4MATIC (2021–2023)
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GLE-Class (V167) – GLE 450 4MATIC (2020–2023)
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GLS-Class (X167) – GLS 450 (select markets / configurations)
Note: Always verify exact fitment with your vehicle's VIN or production date, as some engine/option code combinations (e.g., with or without mild-hybrid) may use a different amperage or part number.
Quick Sales / Listing Version
Mercedes S450 / CLS450 / E450 250A High-Output Alternator OE Cross-References: A0009060903 / 439891 / CG25S035 – Valeo OEM Match Perfect for 2020+ M256 3.0L inline-6 mild-hybrid models Ultra-reliable 250 A charging for MBUX, Burmester audio, adaptive LEDs & EQ Boost system
- 250 A high output – handles heavy luxury & hybrid loads
- 6-groove freewheel pulley – quiet and long-lasting
- Direct OEM replacement – no modifications needed
- Premium Valeo quality – matches factory performance
If you have the exact model, year or VIN, I can help confirm compatibility more precisely. Let me know how else I can assist! 🚗⚡
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