FERRARI PUROSANGUE F175 Alternator

he Alternator (or more accurately, the Starter-Generator) for the Ferrari Purosangue (F175) is a highly specialized component. Unlike a traditional 12V alternator found in older Ferraris, the Purosangue utilizes a sophisticated dual-voltage architecture to support its 48V active suspension and massive electrical demands.

1. Technical Identification

• System Type: Integrated Starter-Generator (ISG) or High-Output 48V/12V System.

• Function: It powers the standard 12V electronics (lights, infotainment) while simultaneously charging the 48V Lithium-ion battery pack used for the Multimatic TASV active suspension motors.

• Part Number Series: Typically found in the 945xxx or 330xxx part sequences (e.g., 945922 is often referenced for the primary charging unit).

• Drive System: It is driven by a heavy-duty serpentine belt system off the front of the 6.5L V12 engine.

2. 2026 Market Pricing (Estimated USD)

Because this unit handles both starting and high-voltage generation, it is significantly more expensive than a standard alternator.

3. Installation & Mechanical Requirements

• Complexity: Replacing the alternator on a Purosangue is labor-intensive. Its position on the front of the V12 engine requires removing the front undertray, cooling fan shrouds, and potentially loosening some of the 48V cooling lines.

• Belt Tension: The Purosangue uses an automatic hydraulic tensioner. In 2026, it is standard practice to replace the serpentine belt (Part #944xxx) and the tensioner pulley whenever the alternator is replaced to prevent future slippage.

• Software Configuration: After installation, the car’s Energy Management System (EMS) must be updated using the Ferrari DEIS tool to register the new alternator and reset the charging cycles for both the 12V and 48V batteries.