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| Manufacturer | Model | Version | Engine code | Construction type | Construction start | Construction end | Pk | Power kw |
| Manufacturer | Productnumber |
| MERCEDES-BENZ | 012 154 59 02 , 0121545902 |
| MERCEDES-BENZ | 012 154 59 02 80 , 012154590280 |
| MERCEDES-BENZ | A 012 154 59 02 , A0121545902 |
| MERCEDES-BENZ | A 012 154 59 02 80 , A012154590280 |
| Usage numbers |
| E10 (>) 14V 90/200A |
An alternator is an essential component of a vehicle’s charging system. It converts mechanical energy from the engine’s crankshaft into electrical energy (AC), which is then converted to DC power to charge the battery and supply electricity to all electrical components — including lights, ECU, ignition, and infotainment systems — while the engine is running.
A failing alternator can show several warning signs, including:
Dim or flickering headlights
Battery warning light on the dashboard
Slow cranking or dead battery
Unusual whining or grinding noise from the alternator pulley
Electrical malfunctions, such as power window or A/C fluctuations
It’s recommended to test alternator voltage output regularly (should read around 13.8V – 14.4V at idle).
You can confirm compatibility by checking the OEM part number, engine code, or vehicle VIN. Also, ensure the following specifications match:
Voltage (12V / 24V)
Amperage (e.g., 90A, 120A, 150A)
Pulley type (single or multi-groove)
Mounting points and plug type
If unsure, contact us with your vehicle make, model, year, and engine details for assistance.
Yes. A defective alternator can cause undercharging, leading to a weak battery, or overcharging, which can overheat and damage the battery. Irregular voltage spikes may also harm sensitive electronic components like the ECU (Engine Control Unit) or sensors. Regular voltage checks ensure optimal system health.
A quality alternator generally lasts between 80,000 – 150,000 km, depending on driving conditions and electrical load. Factors that reduce lifespan include:
Frequent stop-start driving
High electrical load (A/C, lights, sound systems)
Worn belts or pulleys
Exposure to engine oil or coolant leaks
Timely belt replacement and system checks can extend longevity.
Yes. All our alternators undergo bench testing for output voltage, current load capacity, and bearing performance before dispatch. We supply brand-new or remanufactured units meeting OEM standards, backed by a warranty (duration may vary by brand and model).
Alternator
Partxl proudly delivers the most extensive range of Bosch automotive products across the GCC region. As a trusted supplier for garages, wholesalers, and car enthusiasts, we stock both original equipment (OE) and high-quality aftermarket Bosch parts to meet all your vehicle maintenance and repair needs. Whether you're looking for Bosch fuel injectors, sensors, spark plugs, filters, braking systems, alternators, or diagnostic tools, Partxl has you covered with one of the widest selections available.
Thanks to our central warehouse located in Al Quoz 3, Dubai, and a strong network of suppliers, we ensure fast, reliable delivery—same-day or next-day across the UAE and within 3 days to the wider GCC. Our clients benefit from a seamless shopping experience, advanced part search options by VIN, engine code, or OEM number, and expert support to find the perfect fit for any vehicle. Whether you're servicing European, Asian, or American vehicles, trust Partxl to deliver Bosch quality with speed and precision.
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