Overview
The ZF 4657.104.006 DIFFERENTIAL is a critical torque-distribution component engineered specifically for the WG 190 and WG 210 series powershift transmissions. This OEM genuine part sits within the rear axle housing assembly, transferring rotational force from the driveshaft to the wheel hubs while allowing speed variation between left and right wheels during turns. As a precision-machined differential unit, SKU 4657.104.006 works in concert with the 4657101080: TRANSMISSION HOUSING to ensure smooth power delivery under heavy industrial loads. Its robust construction directly supports the 4657201167: HOUS.FRONT SECT and 4657201171: HOUSING REAR PART to maintain proper gear alignment and load distribution.
Symptoms of Failure
- Oil leaks from differential housing – Worn seals or bearing surfaces cause transmission fluid to seep past the 4657298103: HOUSING REAR SECTION, leaving puddles under the vehicle.
- Gear slipping during turns – Internal spider gears or side gears lose engagement, producing a momentary loss of drive power when cornering under load.
- Whining or grinding noise from axle area – Damaged differential bearings or chipped ring-and-pinion teeth create a constant metallic sound that increases with speed.
- Uneven tire wear or vibration – A failing differential cannot equalize wheel speeds, causing scrub marks on tires and a shudder felt through the chassis.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4657.104.006 |
| Product Type | Differential Assembly |
| Material | Forged alloy steel (case-hardened) |
| Weight | 18.5 kg (40.8 lbs) |
| Overall Diameter | 280 mm |
| Overall Length | 210 mm |
| Bearing Journal Diameter | 65 mm |
| Ring Gear Bolt Pattern | 12 x M12 on 145 mm PCD |
| OEM Reference | ZF 4657.104.006 (Genuine) |
| Operating Temperature Range | -20°C to +120°C |
Compatibility
This differential is designed for ZF WG 190 and WG 210 series transmissions, commonly found in heavy-duty construction equipment, agricultural tractors, and material handlers. It also fits select WG 180 and WG 200 variants when used with the correct TRANSMISSION HOUSING. Always verify your transmission model suffix (e.g., WG 190-3, WG 210-5) before ordering. The unit is not backward-compatible with older WG 120 or WG 150 series without major housing modifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Encloses gear train and differential assembly |
| 4657201167 | HOUS.FRONT SECT | Front section of transmission housing |
| 4657201171 | HOUSING REAR PART | Rear housing section supporting differential |
| 4657298103 | HOUSING REAR SECTION | Additional rear housing segment for WG series |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for differential bearing caps |
| 4656301148 | FIXING PLATE | Secures differential to housing |
| 4657301034 | SCREEN SHEET | Oil filter screen for lubrication system |
| 4657301035 | SCREEN SHEET | Secondary oil filter screen |
| 0636100803 | CAP SCREW | Fastener for housing sections |
