# Vitesco 48V Integrated Starter Generator (iBSG) \u2013 Part Number: 05E.903.019H<\/p>\n
This detailed product description refers to the 48V Integrated Starter Generator (iBSG) unit manufactured by Vitesco (formerly Continental), which is a key component in the Mild Hybrid Electric Vehicle (MHEV) systems of modern Volkswagen Group vehicles. This part combines the functions of a traditional starter motor and alternator, contributing significantly to fuel efficiency and emission reduction through the optimization of Start\/Stop functions and regenerative braking.<\/p>\n
## Overview and Application<\/p>\n
The Vitesco iBSG unit with part number 05E.903.019H is the propulsion and energy supply element for the latest generation of 48V hybrid systems in the Volkswagen Group. Thanks to its integrated design, this unit is mounted directly on the crankshaft and is capable of ensuring quick, seamless restarts, while also supporting engine shut-off (coasting) and regenerative braking.<\/p>\n
This component is specified for the following vehicle models:<\/p>\n
* **CUPRA Terramar:** From October 2024 \u2013 present day
\n* **SKODA Octavia:** From March 2024 \u2013 present day<\/p>\n
**Categories:** Starters \/ Alternators, Alternators
\n**Brands:** Vitesco, Continental
\n**Sub-categories:** Generator<\/p>\n
## Technical Specifications<\/p>\n
The table below summarizes the most important technical parameters of the 05E.903.019H Vitesco 48V iBSG unit:<\/p>\n
| Parameter | Value | Remarks |
\n| :— | :— | :— |
\n| **Manufacturer** | Vitesco (Continental) | Supplier to the Volkswagen Group |
\n| **Part Number (OE)** | 05E.903.019H | Volkswagen Group part number |
\n| **Manufacturer Code** | 05E903019H | Short identifier |
\n| **Manufacturer Code (PSH)** | 307505000 | Manufacturer identifier |
\n| **System Voltage** | 48V | Mild Hybrid (MHEV) system |
\n| **Type** | Integrated Starter Generator (iBSG) | Generator and starter motor functions combined |
\n| **Compatible Vehicles** | CUPRA Terramar, SKODA Octavia | Specific year ranges |<\/p>\n
## Advantages of the 48V iBSG System<\/p>\n
The Integrated Starter Generator (iBSG) technology represents a significant advancement over traditional starter motors and alternators, especially in the case of hybridised vehicles.<\/p>\n
### 1. Increased Fuel Efficiency and Emission Reduction<\/p>\n
The iBSG enables fast and frequent engine shut-off (e.g., during deceleration or when stationary) and engine restart without load. The 48V system allows for higher current flow, resulting in faster and more powerful starting, while reducing the load on the engine.<\/p>\n
### 2. Optimization of Regenerative Braking<\/p>\n
The system is capable of recharging the battery with high power during deceleration phases. This recovered energy can be used to support vehicle acceleration (boost function), further reducing the load on the internal combustion engine.<\/p>\n
### 3. Seamless Start\/Stop Function<\/p>\n
Unlike traditional systems, where the clicking of the starter motor and slight jerking of the engine are often noticeable, the iBSG provides an extremely fast and almost imperceptible restart. This significantly improves driving comfort in urban traffic.<\/p>\n
### 4. Longer Lifespan and Reliability<\/p>\n
Since the iBSG is directly connected to the crankshaft and not via a separate belt drive, mechanical wear is reduced. Vitesco\/Continental parts are of excellent quality, ensuring long-term reliability even in high-voltage systems.<\/p>\n
## Installation and Maintenance Notes<\/p>\n
This component is part of the complex electrical architecture of modern vehicles. Its replacement requires specialized expertise, especially due to the handling of 48V high-voltage systems.<\/p>\n
* **Diagnostics:** After replacement, system calibration and clearing error codes with appropriate diagnostic tools are essential.
\n* **Compatibility:** Strict verification of the part number (05E.903.019H) is necessary before installation, as the Volkswagen Group frequently uses parts with minor variations across different model years and trim levels.<\/p>\n
## Related Products<\/p>\n
Further specialized parts may be required for the maintenance and repair of 48V hybrid systems. A unit similar to the 05E.903.019H but with different specifications is the **05E.903.019F Vitesco 48V iBSG**, which is also available in our offering.<\/p>\n
This product belongs to the **Generators** and **Starters \/ Generators** categories and represents the quality of Vitesco and Continental brands in the automotive aftermarket.<\/p>","protected":false},"excerpt":{"rendered":"
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