Product Name: BMW High-Output Alternator (Generator) 180A OE / Cross-Reference Numbers: FG18S052 / FGN18S052 / 12318507624 / 12318509023 / 439709 / 440300 / 8507624 / 8509023 / 0986083330 / LRA03505 / 2608669A / 2608669C / 115581 / etc. (and related Valeo/BMW equivalents) Brand Compatibility: Valeo OEM-quality (new or premium remanufactured) – matches BMW genuine specifications Key Specifications:
- Voltage: 12V (14V charging system)
- Output Current: 180A (high-output for enhanced electrical demands)
- Pulley: 6-groove freewheel belt pulley (overrunning alternator pulley / OAP), diameter ≈53.5mm
- Rotation: Clockwise (CW)
- Regulator: IR/IF (Internal Regulator / Internal Fan) with COM/LIN interface for BMW electronics
- Mounting: 3-point attachment / direct bolt-on (position L 95°)
- B+ Connection: M8
Compatible Vehicles (common applications – always verify with VIN or dealer):
- BMW 3 Series (E90/E91/E92/E93) 320d / 320d xDrive (N47 2.0L diesel) 2009–2012
- BMW 3 Series (F30/F31/F34) 320d / 320d xDrive (N47 2.0L diesel) 2012–2015
- BMW 5 Series (F10/F11) 520d / 520d xDrive (N47 2.0L diesel) 2010–2014
- BMW X1 (E84) sDrive18d / xDrive20d / xDrive25d (N47 2.0L diesel) 2009–2015
- BMW X3 (F25) xDrive20d / xDrive30d (N47 2.0L diesel) 2010–2014
- Other BMW models with N47 2.0L diesel engines (e.g., select 1 Series or export variants)
Product Highlights:
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Reliable 180A Output — Delivers consistent, high-capacity charging to support premium features like iDrive navigation, Harman Kardon audio, adaptive headlights, power seats, start-stop (where equipped), and diesel electronics without voltage drops or battery drain – ideal for efficient diesel models.
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Exact OEM Fit — Bolt-on replacement for BMW part 12318507624 / 12318509023 / Valeo FG18S052 / FGN18S052 / 439709. No modifications required; fully compatible with vehicle ECU and diagnostics.
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Quiet & Durable — Freewheel pulley minimizes belt noise, wear, and vibrations for smooth, long-lasting performance in premium diesel applications.
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Premium Quality — Valeo-tested for heat endurance, overspeed, and full-load reliability to match OE standards in demanding conditions.
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Strong Value — Genuine BMW alternators are expensive – this high-spec replacement provides identical performance at a more competitive price.
Installation Notes:
- Professional installation recommended (engine bay access in these models).
- Inspect serpentine belt, tensioner, and battery condition before fitting.
- After installation: Clear codes with BMW diagnostic tool (e.g., ISTA) and verify charging voltage (typically 13.8–14.8V under load).
🔥 BMW 320d / 520d / X1 180A Alternator – N47 Diesel Efficiency Power! OE Cross: FG18S052 / FGN18S052 / 12318507624 / 12318509023 / 439709 – Valeo Premium Match! Perfect for 2009–2015 2.0L N47 diesel models (3 Series E90/F30, 5 Series F10/F11, X1 E84, X3 F25) – ends dim lights, weak charging, or electrical strain on your premium diesel!
- 180A high-output charging
- 6-groove freewheel pulley – quiet & durable
- Direct OEM replacement
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