Overview
The ZF 4657.105.411 AXLE DISCONNECTION is a critical pneumatic actuation component engineered for the WG210 series transmission. This OEM genuine part controls the engagement and disengagement of the front axle drive, allowing the vehicle to switch between 4×4 and 4×2 modes on demand. Located within the transfer case assembly, the SKU 4657.105.411 directly interfaces with the TRANSMISSION HOUSING to manage torque flow. When activated, it isolates the front differential, reducing driveline drag and improving fuel efficiency during highway operations. This unit is precision-machined to ZF’s original tolerances, ensuring seamless integration with the WG210’s pneumatic control system.
Symptoms of Failure
- Intermittent front axle engagement failure: The vehicle fails to engage or disengage 4WD when the dash switch is toggled, often accompanied by a warning light. This is a common long-tail search query for “ZF WG210 axle disconnect not engaging.”
- Air pressure leaks at the actuator: A persistent hissing sound near the transfer case or a gradual loss of system air pressure indicates a worn seal or diaphragm within the 4657.105.411 unit.
- Grinding noise during shift: A metallic grinding or clunking sound when attempting to shift into 4WD suggests the disconnect fork or spline collar is worn, preventing smooth meshing with the front output shaft.
- Front driveshaft spins freely in 2WD: If the front driveshaft continues to rotate while in 2WD mode, the axle disconnection is stuck in the engaged position, causing unnecessary wear on the HOUS.FRONT SECT and associated bearings.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4657.105.411 |
| OEM Reference | ZF 4657.105.411 |
| Material | Die-cast aluminum alloy with hardened steel shift fork |
| Weight | 2.4 kg (5.3 lbs) |
| Overall Length | 215 mm |
| Mounting Bolt Pattern | 4 x M10 on 85 mm centers |
| Pneumatic Port Size | M12 x 1.5 (air inlet) |
| Operating Pressure | 6.2 – 8.5 bar (90 – 123 psi) |
| Temperature Range | -40°C to +120°C |
Compatibility
This axle disconnection assembly is primarily designed for the ZF WG210 series transmission, commonly found in medium-duty trucks and off-highway equipment. Based on its mechanical interface and pneumatic actuation design, it is also compatible with the WG180, WG200, and WG211 variants. The unit mounts directly to the HOUSING REAR PART of the transfer case and is secured using a CYLINDRICAL PIN for precise alignment. Always verify your transmission serial number against ZF’s OEM catalog to confirm fitment before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101040 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657201028 | HOUS.FRONT SECT | Front section housing input shaft bearings |
| 4657201013 | HOUSING REAR PART | Rear casing supporting output flange |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retainer for shift fork assembly |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil pickup |
| 4657301049 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M12 bolt for actuator mounting |
| 4681301040 | OIL FEED.HOUSG. | Lubrication supply line housing |
