FERRARI 458 Gearbox 263938

In 2026, the part number 263938 refers to the Complete 7-speed Dual-Clutch Transmission (DCT) for the Ferrari 458 Italia and 458 Spider.

This gearbox was a revolutionary component for Ferrari, being their first mass-produced dual-clutch transaxle (developed with Getrag/Magna). It eliminated the “clunky” nature of the older F1 single-clutch systems and provided near-instantaneous shifts.

1. Technical Identification

• Part Number: 263938 (This is an early-to-mid production number; it may have been superseded by newer revisions like 291307 or 312444).

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

• Integrated E-Diff 3: The electronic differential is built into the gearbox housing, sharing the same hydraulic system.

• Applications: Primarily 458 Italia and Spider (The 458 Speciale uses a different internal gear set and software).

2. 2026 Market Pricing (Estimated USD)

As the 458 ages into “modern classic” status, the demand for these gearboxes remains high, but so does the availability of specialist repairs.

3. The “458 Gearbox Problem” (Why you need this part)

If you are searching for part 263938, it is almost certainly due to a failure of the internal sensors.

• Symptoms: The car loses even gears (2, 4, 6) or odd gears (1, 3, 5, 7), or Reverse won’t engage.

• The Culprit: A small internal wiring harness and sensor kit (often called the “SAP” sensor) that sits inside the gearbox. Over time, heat causes the solder or wiring to fail.

• 2026 Advice: Most owners in 2026 no longer replace the whole 263938 unit. Instead, they hire a specialist to “split the case” and install an upgraded sensor kit for about $8,000, saving tens of thousands of dollars.

4. Installation & Calibration

• DEIS Calibration: You cannot simply install this gearbox and drive. It requires a “Clutch Kiss Point” and “Self-Learning” procedure performed via the Ferrari DEIS or Leonardo diagnostic tool.

• Fluid Maintenance: Ferrari officially suggests the fluid is “lifetime,” but in 2026, every specialist recommends changing the Shell Spirax S5 DCT1 fluid and the external filter every 15,000–20,000 miles to prevent sensor failure.

• Labor: A full gearbox swap on a 458 is a 20 to 25-hour job as it requires removing the rear bumper, exhaust, and entire rear subframe assembly.