Product Name: BMW High-Output Alternator (Generator) 180A OE / Cross-Reference Numbers: FG18S045 / FGN18S045 / FG18D111 / 12317823343 / 12317823344 / 12318519890 / 12318519891 / 12318578608 / 12318578609 / 439793 / 440430 / 8519890 / 0986082850 / LRA03719 / DRA1054 / 2607244D / 2607244E / 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 ≈53.5–54mm
- Rotation: Clockwise (CW)
- Regulator: IR/IF (Internal Regulator / Internal Fan) with LIN/COM interface for BMW electronics
- Mounting: 3–4 mounting holes / direct bolt-on (position ≈ -95°)
- B+ Connection: M8
Compatible Vehicles (common applications – always verify with VIN or dealer):
- BMW 1 Series (F20/F21) 116d / 118d / 120d / 125d (N47/B47 2.0L diesel) 2012–2019
- BMW 2 Series (F22/F23 Coupe/Convertible) 218d / 220d (N47/B47 2.0L diesel) 2014–2019
- BMW 3 Series (F30/F31/F34 Sedan/Touring/GT) 316d / 318d / 320d (N47/B47 2.0L diesel) 2012–2019
- BMW 4 Series (F32/F33/F36 Coupe/Convertible/Gran Coupe) 418d / 420d (N47/B47 2.0L diesel) 2014–2019
- Other BMW models with N47/B47 2.0L diesel engines (e.g., select X1 F48 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, and diesel electronics without voltage drops or battery issues – ideal for efficient diesel models.
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Exact OEM Fit — Bolt-on replacement for BMW part 12317823343 / 12318519890 / Valeo FG18S045 / FG18D111. 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 / 328d / 1 Series 180A Alternator – Diesel Efficiency Power! OE Cross: FG18S045 / FG18D111 / 12317823343 / 12318519890 – Valeo Premium Match! Perfect for 2012–2019 2.0L diesel models (1 Series F20/F21, 3 Series F30/F31/F34, 4 Series F32/F33/F36) – 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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