Ferrari FF & GTC4Lusso 4RM PTU Rebuild

Ferrari FF & GTC4Lusso 4RM PTU Rebuild 305902, 271091, 276013, 285958

Ferrari 4RM Power Transfer Unit (PTU) Rebuild Service
Restoring the Heart of Your Ferrari’s All-Wheel Drive Performance

The 4RM PTU is a critical component in Ferrari’s advanced all-wheel-drive system, responsible for distributing torque seamlessly to the front wheels while preserving the brand’s signature rear-biased handling. Over time, these units are known to develop internal leaks, bearing wear, and hydraulic inefficiencies — all of which can compromise performance and lead to costly damage if left unaddressed.

GTE Engineering’s industry-leading 4RM PTU Rebuild Service is designed to restore this complex and high-stress unit to factory or better-than-factory condition. Our process ensures your Ferrari maintains its dynamic balance, precise torque management, and mechanical integrity under the most demanding driving conditions.

Applicable Models:
Ferrari FF, GTC4Lusso, and other models equipped with the 4RM all-wheel-drive system.

Service Includes:

Full disassembly of the PTU for in-depth inspection

Replacement of all seals, O-rings, and gaskets with OEM or upgraded components

Replacement of worn bearings and internal components as needed 

Inspection and service of the hydraulic pump assembly

Resealing of all mating surfaces to eliminate oil leakage

Refill with OEM-spec hydraulic and gear fluids (Gear & Hydraulic oil sold separately)

Final bench testing for pressure, engagement function, and leak detection

Clean and restore exterior housing surfaces. 

Optional Upgrades:

Custom calibration for enhanced torque vectoring (available upon request)

Reinforced bearing options for high-performance or track use

PTU cooling upgrades for extended endurance driving

Why Choose GTE Engineering?

With have extensive experience in rebuilding high-performance driveline systems, our team understands the engineering behind Ferrari’s 4RM drivetrain. Each unit is rebuilt with precision, using specialized tools, test equipment, and processes that meet or exceed factory standards. GTE Engineering is a trusted company by Many Authorized Ferrari Dealers and Independent workshops world wide. Thank you.