Ferrari 430 F1 Gearbox Actuator 248084 232406

In 2026, the part numbers 248084 and 232406 refer to the F1 Gearbox Hydraulic Actuator for the Ferrari F430. This is the critical “Power Unit” that manages gear selection and engagement for the automated manual transmission.

1. Technical Identification & Supersession

• Part 232406: This is the older/original version of the actuator used during early F430 production.

• Part 248084: This is the superseded/updated part number. In 2026, if you order a new actuator from Ferrari, this is the version you will receive. It features improved internal seals and valving to address common leak issues found in the earlier 232406 units.

• Function: The actuator sits on top of the gearbox and uses high-pressure hydraulic fluid (pumped by the F1 pump) to physically move the gear selector forks.

2. 2026 Market Pricing (Estimated USD)

The F1 actuator is one of the most expensive maintenance items for the F430. By 2026, many owners opt for rebuilds rather than new units due to the high cost of new old stock (NOS).

3. Common 2026 Failure Points

By 2026, even the “updated” 248084 units are reaching an age where they require attention:

• Internal Seal Leaks: The most common issue. Fluid leaks internally between the shift and select pistons, leading to “missed shifts” or the car dropping into Neutral.

• Potentiometer Failure: The sensors that tell the TCU (Transmission Control Unit) which gear the car is in. If these fail, the car will often refuse to start or select any gear.

• Solenoid Wear: The actuator contains several solenoids (EV1 through EV5). If one becomes sticky, you may lose specific gears (e.g., losing 2nd and 4th).

4. Installation & Calibration Requirements

• DEIS / SD3 Diagnostic: You cannot simply swap this part. After installation, a “Self-Learning” (PIS – Point of Initial Slippage) procedure must be performed using a Ferrari diagnostic tool.

• Hydraulic Bleeding: The system must be bled under pressure to remove all air. Air in the actuator leads to “clunky” shifts and premature clutch wear.

• Fluid Choice: In 2026, specialists strongly recommend using Shell Spirax S5 ATE or specialized racing hydraulic fluids to help preserve the internal rubber seals of the 248084 unit.