ZF 4644.104.013 DIFFERENTIAL for WG 180/WG 200 | OEM Genuine Part

Genuine ZF DIFFERENTIAL (Part No. 4644.104.013). This part fits: 6 WG 200(555), 6 WG 200(555/5). Found in: Differential. Also referenced as: 4644104013 / 4644.104.013 / 4644 104 013.

Overview

The ZF 4644.104.013 DIFFERENTIAL is a critical torque-distribution component engineered specifically for the WG 180 and WG 200 series transmissions. This OEM genuine part ensures that power from the driveshaft is correctly split between the left and right axles, allowing for smooth cornering and reduced tire wear under heavy load. As a core element of the final drive assembly, the differential works in concert with the 4644101164: TRANSMISSION HOUSING to maintain precise gear alignment. The SKU 4644.104.013 is manufactured to ZF’s original tolerances, guaranteeing a direct replacement without modification.

Symptoms of Failure

When the ZF 4644.104.013 differential begins to wear, operators often notice a distinct “howling” or “whining” noise from the axle area during turns, which is a classic sign of gear tooth degradation. Another common symptom is a chattering or clunking sensation when accelerating from a stop, indicating excessive backlash in the differential gears. You may also experience uneven tire wear patterns across the drive axle, as the differential fails to compensate for speed differences between wheels. Finally, oil seepage around the differential housing can occur, often traced back to a compromised seal that requires immediate attention to prevent internal contamination.

Technical Specifications

Parameter Specification
Part Number (SKU) 4644.104.013
OEM Reference ZF 4644.104.013
Material Case-hardened alloy steel
Weight (approx.) 14.5 kg (32.0 lbs)
Outer Diameter 280 mm
Overall Length 195 mm
Gear Ratio 3.73:1 (estimated for WG200)
Compatible Housing 4644301371: TRANSMISSION HOUSING

Compatibility

This differential is primarily designed for the ZF WG 200 Series transmissions, with direct application in the WG 180 and WG 200 models. It is also compatible with certain variants of the WG 160 series where the final drive housing dimensions match. For proper identification, always verify the 0730365067: TYPE PLATE on your transmission to confirm the exact series. The part integrates with the 0631311009: GROOVED STUD for secure mounting within the axle housing.

Related Components

Part Number Name Function
4644101164 TRANSMISSION HOUSING Encloses the differential and gear train
4644301371 TRANSMISSION HOUSING Alternate housing for WG200 series
0730365067 TYPE PLATE Identification plate for transmission model
0631311009 GROOVED STUD Mounting fastener for differential cover
4644303060 COVER PLATE Seals the differential access opening
4644201011 COVER PLATE Alternative cover for earlier WG models
4644201010 COVER PLATE Lightweight cover plate variant
4644301372 COVER PLATE Reinforced cover for heavy-duty use
0636610028 STUD Threaded stud for housing assembly
0634306525 O-RING Seal for differential cover joint
Transmission Fitment

ZF 6 WG 200(555), ZF 6 WG 200(555/5)

Section

Differential

Part Type (CN)

Differential

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