Ferrari Purosangue Actuator Left Right 950509 950908

the part numbers 950509 and 950908 refer to the highly sophisticated Electric Actuators for the Ferrari Active Suspension Technology (FAST) system on the Purosangue.

These components are the “brain and muscle” behind the Multimatic TASV (True Active Spool Valve) dampers, which allow the Purosangue to eliminate traditional anti-roll bars.

1. Technical Identification

• Part 950509 (Left / LH): Front Left Active Suspension Actuator.

• Part 950908 (Right / RH): Front Right Active Suspension Actuator.

• The Technology: These actuators use a 48V motor integrated with the shock absorber. They are capable of applying force to each individual wheel to counteract body roll, pitch, and heave in real-time. Unlike traditional adaptive dampers that only change stiffness, these actuate the suspension to keep the car level.

2. 2026 Market Pricing (Estimated USD)

Because this is cutting-edge, proprietary Multimatic technology, these actuators are among the most expensive “wear items” in the Purosangue chassis.

3. Installation & Mechanical Requirements

• 48V System Safety: The Purosangue uses a 48V electrical architecture specifically to power these actuators. Technicians must follow high-voltage safety protocols during replacement to avoid shorting the car’s secondary battery system.

• Diagnostic Handshake: Once installed, the actuators must be calibrated using the Ferrari DEIS system. The car needs to perform a “Ride Height Relearn” and a “Dynamic Damper Calibration” so that the Left (950509) and Right (950908) units work in perfect symmetry.

• No Repairable Internals: These are sealed units. If the internal spool valve or the 48V motor fails, the entire assembly must be replaced.

4. 2026 Maintenance Warning: Heat and Debris

By 2026, early Purosangue models are showing that these actuators are sensitive to:

• Cooling: The actuators generate significant heat during aggressive driving. Ensure the cooling ducts in the inner fender liners are clear of debris, as overheating can trigger a “Suspension System Failure” warning.

• Connector Corrosion: The electrical connectors sit in an area exposed to road spray. It is recommended to check the seals on the 48V harness connectors during annual service to prevent “Ghost” sensor errors.