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Details
| Specification | Value |
|---|---|
| Brand | MAHLE |
| MPN | mg389 |
| Category | Power generator |
| Voltage [V] | 14 V |
| Alternator Charging Current [A] | 50 A |
| Bore Diameter [mm] | 8.2 mm |
| Belt Pulley Ø [mm] | 68 mm |
| Distance of mounting bores [mm] | 56.0 mm |
| Mounting Angle [degrees] | 60.0 ° |
| Mounting points diameter [mm] | 90.0 mm |
| Distance from belt pulley to alternator [mm] | 23.3 mm |
| Packaging length [cm] | 24.8 cm |
| Packaging width [cm] | 18.60 cm |
| Packaging height [cm] | 17.50 cm |
| Net Weight [g] | 4500 g |
OE/OEM numbers (14)
Where this part fits
Original-fit position for OE 1204165. The red ring marks where this part installs on the vehicle.
What's in the kit
This kit ships with 13 factory-matched components. Each part below is supplied as part of the kit; click any linked MPN to view that component on its own.
| # | Part number | Component | Qty |
|---|---|---|---|
| 1 | MGX 398 | Fan Wheel, alternator
| 1 |
| 2 | MGX 569 | Cap
| 1 |
| 3 | MGX 669 | Drive Bearing, alternator
| 1 |
| 4 | MGX 7 | Stator, alternator | 1 |
| 5 | MGX 1296/S | Screw
| 1 |
| 6 | MGX 626 | Rotor, alternator
| 1 |
| 7 | MGX 754 | Belt Pulley, alternator | 1 |
| 9 | MGX 750 | Drive Bearing, alternator
| 1 |
| 10 | MGX 344KIT | Rectifier, alternator
| 1 |
| 11 | MGX 1059 | Cap
| 1 |
| 12 | MGX 207 | Capacitor, alternator
| 1 |
| 13 | MGX 205 | Protective Cap, alternator
| 1 |
| 15 | MGX 503 | Alternator Regulator
| 1 |
About this product
MAHLE Power generator (MG 389) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Voltage [V]: Nylon V, Alternator Charging Current [A]: 50 A, Bore Diameter [mm]: Carbon, Aluminium mm, Number of ribs: Steel, Belt Pulley Ø [mm]: 68 mm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with OPEL, VAUXHALL vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 0120300530, 0120300531, 0120339524, 0120339525 and 40 more. Matching these numbers confirms a like-for-like replacement with no loss of function. MAHLE 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
About MAHLE
MAHLE, founded in 1920 in Stuttgart, Germany, is a global leader in engine components and filtration systems. MAHLE specialises in pistons, cylinder liners, gaskets, turbocharger components, oil filters, air filters, and fuel filters. As an OE supplier to nearly every car and truck manufacturer worldwide, MAHLE products are engineered to exact factory specifications. Trusted by professional workshops and racing teams alike, MAHLE delivers outstanding engine performance and filtration efficiency across millions of applications.
Suitable cars
Equivalent products (30)
Show all 30 OE numbers
Power generator MAHLE MG 389 — compatible car models
| Car models | OPEL: ASCONA A (81, 86, 87, 88), ASCONA B (81, 86, 87, 88), GT, KADETT B, KADETT B Coupe, KADETT B Estate, KADETT C, KADETT C City, KADETT C Coupe, KADETT C Estate (+6 more); VAUXHALL: ASTRA Hatchback, ASTRA Mk II Estate (T85), ASTRA Mk II Hatchback (T85), CAVALIER |
|---|---|
| Engines | 1.2 S; 1.2; 1.1; 1.0; 1.2 (C70, D70); 1.2 (C08, C48, D08, D48); 1.2 N; 1300 |
| Year of manufacture | 1965-1993 |
| Manufacturer article number (MPN) | MG 389 |
| OE part numbers | 03472220, 09120566, 09120572, 09120574, 10457041, 12 04 018, 12 04 110, 12 04 112, 12 04 120, 12 04 165, 12 04 168, 12 04 170, 12 04 310, R1 030 041 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
MAHLE mg389 Power generator. Alternator Charging Current [A]: 50 A. Belt Pulley Ø [mm]: 68 mm. Bore Diameter [mm]: 8,2 mm. Distance from belt pulley to alternator [mm]: 23,3 mm. Distance of mounting bores [mm]: 56,0 mm. Mounting Angle [degrees]: 60,0 °. Mounting points diameter [mm]: 90,0 mm. Net Weight [g]: 4500 g
- 1x Power generator
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- 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 OPEL, VAUXHALL 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 MAHLE Power generator have?
This MAHLE Power generator has the following specifications: Voltage [V]: 14 V; Alternator Charging Current [A]: 50 A; Bore Diameter [mm]: 8,2 mm; Number of ribs: 1; Belt Pulley Ø [mm]: 68 mm; Pulleys: 0. 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: 03472220, 09120566, 09120572, 09120574, 10457041, 12 04 018, 12 04 110, 12 04 112 and 6 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Power generator cost?
This MAHLE Power generator is available for £183.99. Power generator prices vary depending on brand, specifications, and vehicle compatibility. MAHLE 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 03472220?
Yes, this MAHLE Power generator is a direct replacement for OE part number 03472220. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
