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Details
| Specification | Value |
|---|---|
| Brand | VALEO |
| Category | Power generator |
| Voltage [V] | 14 V |
| Alternator Charging Current [A] | 220 A |
| Weight [kg] | 7.77 kg |
| Position/Degree | L 95 ° |
| Belt Pulley Ø [mm] | 55 mm |
| Clamp | B+ |
OE numbers (6)
Search by this OE number to find compatible parts
- BMW—12 31 7 823 345
- BMW—12 31 7 823 347
- BMW—12 31 8 579 419
- BMW—7 823 345
- BMW—7 823 347
- BMW—8 579 419
Where this part fits
Original-fit position for OE 12317823347. The red ring marks where this part installs on the vehicle.
About this product
The VALEO Power generator (439788) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Voltage [V]: Nylon V, Alternator Charging Current [A]: 220 A, Weight [kg]: Ceramic, 77 kg, Number of ribs: Plastic, Position/Degree: L 95 °. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit BMW models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 012086, 0 986 085 880, 0 986 UR6 468, 10444989 and 73 more. Matching these numbers confirms a like-for-like replacement with no loss of function. VALEO is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
About VALEO
Valeo, founded in 1923 in Saint-Ouen, France, is a major global automotive supplier with expertise spanning multiple vehicle systems. Valeo specialises in clutch kits, alternators, starters, wiper systems, lighting, and thermal management components. As an OE supplier to Peugeot, Renault, Citroën, Volkswagen, and many others, Valeo products maintain factory-quality standards. With 19 research centres worldwide and a strong focus on innovation, Valeo combines French engineering heritage with cutting-edge automotive technology for dependable replacement parts.
Suitable cars
Equivalent products (65)
Show all 65 OE numbers
Power generator VALEO 439788 — compatible car models
| Car models | BMW: 1 (F20), 1 (F21), 2 Convertible (F23), 2 Coupe (F22, F87), 3 (F30, F80), 3 Gran Turismo (F34), 3 Touring (F31), 4 Convertible (F33, F83), 4 Coupe (F32, F82), 4 Gran Coupe (F36) (+1 more) |
|---|---|
| Engines | 114 d; 218 d; 316 d; 318 d; 420 d; 418 d; sDrive 25 d |
| Year of manufacture | 2011-2021 |
| Manufacturer article number (MPN) | 439788 |
| OE part numbers | 12 31 7 823 345, 12 31 7 823 347, 12 31 8 579 419, 7 823 345, 7 823 347, 8 579 419 |
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
VALEO 439788 VALEO ORIGINS NEW OE TECHNOLOGY. Alternator Charging Current [A]: 220 A. Belt Pulley Ø [mm]: 55 mm. Clamp: B+. Fastening Type: 42. Number of ribs: 6. Position/Degree: L 95 °. Pulleys: 3. Rotation Direction: 0
- 1x Power generator
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 5–9 business days
- Order before 5pm — ships the next working day
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Power generator compatible with my car?
This Power generator fits BMW vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this VALEO Power generator have?
This VALEO Power generator has the following specifications: Voltage [V]: 14 V; Alternator Charging Current [A]: 220 A; Weight [kg]: 7,77 kg; Number of ribs: 6; Position/Degree: L 95 °; Fastening Type: 42. Check the full specifications table above for complete details.
What OE part numbers does this Power generator replace?
This Power generator replaces OE part numbers: 12 31 7 823 345, 12 31 7 823 347, 12 31 8 579 419, 7 823 345, 7 823 347, 8 579 419. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Power generator cost?
This VALEO Power generator is available for £488.99. Power generator prices vary depending on brand, specifications, and vehicle compatibility. VALEO parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Power generator?
Watch for dimming headlights, warning light on dashboard, dead battery, strange noises from the engine, or electrical accessories malfunctioning.
What tools do I need to replace a Power generator?
Tools needed: socket set (8-17mm), spanner set, serpentine belt tool or breaker bar, multi-meter (for testing charge output), battery terminal clamp remover. Difficulty: Moderate DIY. Safety warning: Disconnect the battery negative terminal before starting. Never disconnect the alternator with the engine running -- voltage spikes will destroy ECU electronics.
Can I use this part as a replacement for OE 12 31 7 823 345?
Yes, this VALEO Power generator is a direct replacement for OE part number 12 31 7 823 345. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Is the VALEO 439788 the same as the VALEO 101822?
No, while both are Power generator parts, they are different products. The VALEO 439788 has Voltage [V]: 14 V, Alternator Charging Current [A]: 220 A, Weight [kg]: 7,77 kg. The VALEO 101822 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
