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Transfer Box & parts
By OE Match
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 957 Cayenne S / GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
The transfer-case electric servo motor - also called a transfer case/shift motor, actuator, or servomotor - is a compact electric actuator that controls the Cayenne’s transfer case. It adjusts the internal gearing and clutch positions, enabling all-wheel-drive engagement and managing the low/high reduction functions inside the transfer box. This part is sold under Porsche part number PAB-341-601 (superseded by 955-624-601-00 and 955-624-601-01).
Fits:
- Porsche 955 Cayenne 3.2L V6 2003-06
- Porsche 955 Cayenne S 4.5L V8 2003-06
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 957 Cayenne 3.6L 2007-10
- Porsche 957 Cayenne S/GTS 4.8L 2007-10
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
Diagram ref no 14
Why Replace It ?
A servo motor should be replaced if it fails to operate or communicate properly, or if it shows signs of electrical damage or corrosion. Common symptoms include:AWD warning lights in the instrument clusterVehicle operating as 2WD instead of AWDSlow, noisy, or delayed engagementClunks or unusual noises when slowing downStored transfer-case diagnostic trouble codes (DTCs)Because the motor contains sensors (potentiometers) and the connector seals can deteriorate, many failures are electrical rather than purely mechanical.
Common Symptoms & Failure Signs of AWD Systems
- Dashboard Warnings: Messages like “All-wheel drive system defective” may appear, often accompanied by reduced or no AWD functionality.
- AWD Engagement Issues: Vehicle stuck in 2WD or transfer case fails to shift into longitudinal reduction.
- Drivetrain Noises: Clunks, slow engagement, or unusual sounds at low speeds, sometimes intermittent.
- Diagnostic Trouble Codes (DTCs)
- Common codes related to AWD/transfer case issues include:
- 2040: Voltage supply to transfer box servo motor
- 2041: Ground supply
- 2042: Activation
- 2039 / 2033: Other transfer case errors
- These codes typically prompt technicians to inspect the servo motor, wiring, and connector pins.
- Connector Corrosion & Moisture Issues
- Porsche technical bulletins note that the servo motor plug can allow moisture ingress, leading to corroded pins. Recommended solutions include:
- Repair kit (replacing a section of cable/plug)
- Full replacement of motor + cable, depending on damage
- Tip: Don’t assume the motor is faulty before checking connectors and wiring.
- Transfer Case Mechanical Wear
- Sometimes, noisy or slipping transfer cases are due to mechanical issues rather than the servo motor. Common problems include:
- Stretched chain
- Worn internal components
- These failures are especially common on higher-mileage Porsche 955/957 models. Always consider mechanical wear as a potential cause when diagnosing AWD problems.
- When replacing you will need a new ECU module to fit or reprogrammed
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAB341601
The product you are viewing cross references to these numbers
These transfer box and related parts are intended for Porsche models with AWD or 4WD drivetrains. The items described here support rebuilds, routine servicing and repairs, helping to restore even torque distribution between front and rear axles, reduce vibration and prevent further gearbox or differential damage.
Available Types- Complete transfer boxes and replacement housings
- Rebuild kits including gears, chains, bearings and seals
- Individual consumables such as seals, gaskets and lubricants
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original transfer box and parts.
OE (Original Equipment) refers to parts matching original specifications for the transfer box and parts and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM transfer box and parts engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
The transfer box distributes engine torque between the front and rear axles to maintain traction and balance under varied conditions; it works with the gearbox and differentials to manage drive torque and reduce wheel slip. OEMatch maintains a large catalogue for Porsche applications, providing over 4,000 part numbers and more than 8,700 OE cross-references, with new products in development to support repairs and restorations.
- Restores balanced torque distribution between axles
- Reduces drivetrain vibration, noise and binding
- Prevents secondary damage to gearbox and differential components
- Worn bearings or damaged gear teeth from extended use or contamination
- Seal failure leading to lubricant loss and increased friction
- Chain or gear wear and fatigue reducing torque transfer efficiency
- Overheating caused by degraded fluid or insufficient servicing
Replacing worn transfer box components restores consistent torque delivery and helps avoid costly secondary failures in the gearbox or differentials. Many owners search for genuine or OEM transfer box parts; OEMatch components are compatible replacements engineered to original-spec dimensions and tolerances — a practical option when genuine or OEM parts are unavailable. Proper renewal of worn gears, bearings and seals reduces noise, improves handling and helps retain driveline behaviour expected on Porsche models.
Advantages- Available parts cover rebuilds, routine service and targeted repairs
- Catalogue cross-references simplify identification for Porsche models
- Components supplied to support both maintenance and restoration projects
Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified and confirm correct lubrication and sealing during reassembly.
