FERRARI GTC4 LUSSO 3.9 V8 F151M DCT Gearbox 321441

In 2026, the part number 321441 refers to the Complete 7-speed Dual-Clutch Transmission (DCT) Assembly for the Ferrari GTC4Lusso T (F151M).

This specific gearbox is designed for the 3.9L V8 twin-turbo variant. While it shares the same basic casing architecture as the V12 model, the 321441 unit features specific internal gear ratios and clutch pressure mapping tailored to the turbo V8’s high-torque delivery.

1. Technical Identification

• Part Number: 321441 (Commonly used as a service replacement or remanufactured exchange unit).

• Type: 7-Speed Dual-Clutch (DCT) Rear-mounted Transaxle.

• Compatibility: GTC4Lusso T (Rear-Wheel Drive only).

  • Note: Unlike the V12 variant, the Lusso T does not have the front PTU (Power Take-Off Unit), so this gearbox does not need to synchronize with a front-drive system.

• Integrated E-Diff 3: The electronic differential is built directly into this transaxle, managing the massive torque from the twin-turbo V8.

2. 2026 Market Pricing (Estimated USD)

Replacing the gearbox in a GTC4Lusso T is a significant capital expense. By 2026, because the car is purely RWD, the labor is slightly less complex than the V12, but the parts remain premium.

3. Common 2026 Failure Points

If you are sourcing part 321441, you are likely dealing with the typical Getrag-derived DCT failures common in the 2017–2020 era:

• Speed Sensor / Internal Harness Failure: The internal electronics succumb to heat over time, causing the car to “skip” gears or enter limp mode.

• Hydraulic Pressure Issues: Solenoid failures within the valve body that prevent smooth shifting or reverse engagement.

• Clutch Wear: Due to the high torque of the 3.9L V8, aggressive drivers may see premature wear on the wet clutch packs compared to the naturally aspirated models.

4. Installation & Calibration

• DEIS Calibration: A new 321441 unit must undergo a “Self-Learning” procedure and a “Clutch Kiss Point” calibration using the Ferrari DEIS tool.

• Fluid Maintenance: Ferrari officially uses Shell Spirax S5 DCT1. In 2026, specialists strongly advise changing this fluid every 20,000 miles to protect the internal electronic sensors from metallic debris.

• Labor: Expect 18 to 24 hours of labor. While easier than the V12 4WD system, it still requires dropping the rear subframe and exhaust.