Alternator 03H903023K

Description

Alternator by PORSCHE, catalog number 03H903023K. Confirmed catalog fitment: Porsche CAYENNE II 92A (2010+), Porsche Macan S 95B (2014+), Volkswagen TOUAREG II 7P5, 7P6 (2010–2017). For an accurate match, compare the number and identification with the removed part and confirm the vehicle specification by VIN. The fitment list is a reference and does not replace a vehicle-specific compatibility check.

CAR ALTERNATOR

An alternator is a key component of the vehicle’s electrical system designed to generate electricity while the engine is running. It powers the onboard electronics, charges the battery, and maintains stable voltage for all electrical systems.

The alternator is driven by the engine belt and converts mechanical energy into electrical power. It operates together with the voltage regulator, battery, and vehicle control modules to ensure reliable electrical supply.

A faulty alternator may cause battery discharge, voltage drops, dim headlights, electronic errors, bearing noise, belt squeal, or complete charging failure.

Our catalog includes alternators for many vehicle brands. Available options include genuine factory units, reliable aftermarket replacements, and tested used alternators with functional diode bridges and voltage regulators. Units of different output capacities are available for petrol and diesel engines, including versions for vehicles with high electrical demand.

Selection is available by VIN number, engine code, part number, output rating, and vehicle year. Replacing a faulty alternator ensures stable electrical operation and prevents battery discharge.

Compatibility

Fits 3 vehicles

Nothing found

About the manufacturer · PORSCHE

PORSCHE is a German manufacturer of sports and luxury vehicles (Dr. Ing. h.c. F. Porsche AG), founded in 1931 by Ferdinand Porsche, and one of the most iconic brands in the sports car segment, specializing in high-perfor...

PORSCHE is a German manufacturer of sports and luxury vehicles (Dr. Ing. h.c. F. Porsche AG), founded in 1931 by Ferdinand Porsche, and one of the most iconic brands in the sports car segment, specializing in high-performance cars, SUVs and electric vehicles, with strong global presence and part of the Volkswagen Group. The company is known for models such as the 911, Cayenne, Macan, Panamera and Taycan, as well as engineering precision and driving performance. In terms of spare parts, PORSCHE offers original (OEM) components along with a well-developed aftermarket. According to user and workshop feedback, PORSCHE parts are valued for their high quality, precise fitment and durability, although they are relatively expensive. Overall, the brand is regarded as a premium benchmark in performance and luxury automotive engineering.

Additional information

Alternator by PORSCHE, catalog number 03H903023K, is listed for vehicle repair or maintenance. The catalog identifies the item as “Alternator”. Confirmed catalog fitment: Porsche CAYENNE II 92A (2010+), Porsche Macan S 95B (2014+), Volkswagen TOUAREG II 7P5, 7P6 (2010–2017). Fitment is based on the catalog links between the part and vehicle bodies. It helps narrow the search, but final compatibility must be confirmed for the exact vehicle specification. The primary ordering references are part number 03H903023K and manufacturer PORSCHE. Parts can differ within the same vehicle model by production year, engine, transmission, installation side, or position. Before purchase, compare the number and identification with the removed component and verify body, year, and specification by VIN. Also compare appearance, connectors, mountings, dimensions, and included items whenever those details are relevant to this part. Compare the offered part with the removed unit and confirm fitment by VIN when necessary.

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