This detailed product description is for the IBSG4U054 refers to the type, 48V integrated starter-generator (iBSG) designed for Volkswagen vehicles. This component is crucial in modern mild-hybrid (MHEV) systems, ensuring efficient energy recovery, starting, and charging.
Stremtec, as an expert in starting, charging, and cooling systems, offers high-quality, direct replacement parts that meet or exceed Original Equipment (OE) specifications.
The IBSG4U054 is an advanced generator that performs a dual function in Volkswagen's 48V mild-hybrid systems: it operates as a starter motor and as a generator. This technology enables more efficient fuel consumption, smoother Start/Stop functionality, and the recovery of energy from regenerative braking.
This component is a direct replacement for factory Valeo units and can be used in numerous Volkswagen models where the 48V iBSG system has been implemented.
Integrated System: Integrating the starter motor and generator functions into a single unit reduces the engine bay space and improves system efficiency.
48V MHEV Compatibility: Optimized specifically for 48-volt mild-hybrid architectures.
High Efficiency: Provides excellent charging performance for the 48V battery, as well as fast and reliable starting.
Regenerative Capability: Enables maximum energy recovery during braking, thereby increasing the vehicle's overall energy efficiency.
OE Quality: The product complies with the strict quality requirements of the original parts.
For precise identification of the IBSG4U054 generator and verification of compatibility, the following technical data and factory part numbers (OE and aftermarket) are required:
| Type / Manufacturer | Part number |
|---|---|
| Original Part Number (VW) | 05C903018 |
| Original Part Number (VW) | 05C903018X |
| Original Part Number (VW) | 05E903018FX |
| Original Part Number (VW) | 05E903018G |
| Original Part Number (VW) | 05E903018GX |
| Original Part Number (VW) | 5C903018 |
| Original Part Number (VW) | 5E903018G |
| Valeo OE | UD102357 |
| the wiper blade is removed and connected to the wiper blade holder. Various adapters are used to make a precise connection between the wiper blade mount and the angle measuring device. Adapters are available for all wiper arm types. (Bosch | 415012 |
| the wiper blade is removed and connected to the wiper blade holder. Various adapters are used to make a precise connection between the wiper blade mount and the angle measuring device. Adapters are available for all wiper arm types. (Bosch | 615012 |
| the wiper blade is removed and connected to the wiper blade holder. Various adapters are used to make a precise connection between the wiper blade mount and the angle measuring device. Adapters are available for all wiper arm types. (Bosch | 740009 |
| Valeo (Own Type Designation) | IBSG4U054 |
| AS-PL | 2726578 |
| CASCO | CAS15H12GS |
| CASCO | CAS15H14GS |
| DRI | 24-0019 |
| ELSTOCK | 5111122508 |
| AB AUTOMOTIVE | 21015H12OVIT |
| AB AUTOMOTIVE | 21015H14OVIT |
| KRAUF | ALV3954 |
| KUHNER | 556403RIV |
| KUHNER | 556405RIV |
| LUCAS | LRC00019 |
| LUCAS | LRC0019 |
| PSH | 307.503.250.500 |
| REAL | 2027921HOE |
| REAL | 2027941HOE |
| SANDO | 3015H12.1 |
| SANDO | 3015H14.1 |
| TMI | AL04608 |
Cross references:
VW ALTJ579
3EFFE
Main Category: Alternators
Component group: Starters / Alternators
Manufacturer: Valeo (Original equipment manufacturer)
Subcategory: Alternator
The maintenance and replacement of iBSG (Integrated Belt Starter Generator) systems requires specialized knowledge, especially due to the 48V network voltage. Communication via LIN (Local Interconnect Network) protocol ensures synchronization with the Engine Control Unit (ECU), which is essential for the correct functioning of the Start/Stop and regenerative functions.
This component is the ideal choice for professional workshops dealing with the repair of Volkswagen mild-hybrid vehicles, looking for a reliable replacement part that meets factory specifications. The extensive cross-reference list guarantees that the correct part can be easily identified based on existing OE part numbers.
Related Products:
Stremtec's offering includes the IBSG4W059 Valeo New 48V alternator as well, which is a 48V unit intended for another, similar application area, which might be worth considering to broaden the compatibility range.
This product is part of Stremtec's broader portfolio, which includes EV/PHEV chargers, diagnostic tools, and other specialized workshop equipment.
