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12318570672 and 12318570673 → Genuine BMW OEM part numbers (often listed interchangeably; 12318570673 is a later/superseding version in many catalogs). Full format: 12 31 8 570 672 / 12 31 8 570 673.
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1231857067302 → Extended/internal BMW reference or packaging/variant code for the same alternator (common in some supplier listings and reman programs).
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14201287 → AES (Aftermarket Equivalent Supplier) or internal reference number tied to this Valeo alternator (appears in remanufacturer catalogs like PSH/BV PSH as a cross for the 220–230A unit).
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215580220 → PSH / BV PSH remanufacturer reference (e.g., 215.580.220 or 215.580.220.500/.004 variants), directly matching the Valeo/BMW unit in rebuilds and aftermarket listings.
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439830 → Valeo original manufacturer part number (VAL-439830). This is the OE supplier code for the alternator BMW rebadges as 12318570672/73.
Key Specifications (Confirmed from OEM & Supplier Data)
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Output: 220–230A (most listings specify 220A or 230A; high-output for diesel electrical loads)
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Voltage: 14V charging system (12V nominal)
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Pulley: 6-groove, with overrunning alternator pulley (OAP/freewheel clutch), diameter ≈52–55mm
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Rotation: Clockwise
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Regulator: Integrated, LIN/COM bus compatible for BMW smart charging/ECU control
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Mounting: 3-point or direct bolt-on (L 95° position in some specs)
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B+ Connection: M8 stud
Common Compatible BMW Models
Primarily N57 engine diesel variants (2011–2016+ range, market-dependent):
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5 Series (F10/F11): 535d, 535d xDrive, 530d (some markets)
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7 Series (F01/F02/F07): 740d, 740Ld xDrive, 730d (select high-spec)
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X5 (E70/F15): xDrive35d (diesel), some 30d/40d
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X3 (F25): xDrive30d / 35d (select)
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Other: Gran Turismo (F07) 530d/535d, some export 5/7 Series diesels
This is the upgraded/high-amp alternator for models with heavy accessories (e.g., heated seats/steering, premium audio, adaptive suspension, night vision).
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