Overview
The ZF 4657.104.008 DIFFERENTIAL is a critical torque-distribution component engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part ensures balanced power delivery between the drive wheels, directly influencing vehicle traction and driveline stability. Positioned within the rear axle housing assembly, the differential works in concert with the 4657101080: TRANSMISSION HOUSING to manage rotational speed differences during cornering. The SKU 4657.104.008 is precision-machined to ZF’s factory tolerances, guaranteeing seamless integration with your existing drivetrain.
Symptoms of Failure
When the ZF 4657.104.008 differential begins to wear, operators often notice distinct performance issues. Whining or howling noises from the rear axle during acceleration or deceleration indicate gear tooth surface fatigue. Oil leaks around the differential housing suggest seal degradation, often accompanied by low lubricant levels. Clunking sounds when shifting between drive and reverse point to excessive backlash within the gear set. Additionally, vibration during highway-speed operation can signal bearing wear or uneven gear contact patterns. Addressing these symptoms promptly prevents secondary damage to the 4657201167: HOUS.FRONT SECT and other adjacent components.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4657.104.008 |
| Weight | 14.2 kg (31.3 lbs) |
| Material | Forged alloy steel, case-hardened |
| Overall Diameter | 210 mm |
| Ring Gear Bolt Pattern | 8 x M12 |
| OEM Reference | ZF 4657.104.008 |
| Lubricant Capacity | 2.8 L (SAE 80W-90) |
Compatibility
This differential is designed for ZF WG-series transmissions, specifically the WG 190 and WG 210 models. It also fits select variants of the WG 180 and WG 200 series when used with the correct 4657201171: HOUSING REAR PART and 4657298103: HOUSING REAR SECTION. Always verify your transmission’s serial number against ZF’s application guide to ensure proper fitment. The unit is not compatible with older WG 150 or WG 160 series without significant housing modifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201167 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201171 | HOUSING REAR PART | Rear housing segment supporting output shaft |
| 4657298103 | HOUSING REAR SECTION | Alternate rear housing component for WG 210 |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 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 | Mounting bolt for rear housing section |
