Overview
The ZF 4642.102.081 INPUT for WG150 is a precision-machined component that serves as the primary power transfer interface within the WG 150 Series transmission. This OEM genuine part, identified by SKU 4642.102.081, is positioned at the front of the gearbox assembly, directly coupling engine torque to the planetary gear sets. It is engineered to withstand high cyclic loads and thermal stress, ensuring reliable engagement across all operating ranges. When installed alongside the 4642101109: TRANSMISSION HOUSING and the 4642301205: TRANSMISSION HOUSING, this input component forms the critical structural foundation for the entire drivetrain.
Symptoms of Failure
When the ZF 4642.102.081 INPUT begins to degrade, operators often notice distinct operational anomalies. Oil leaks around the front seal area are a primary indicator, frequently caused by worn splines or bearing surface degradation. Gear slipping under load occurs when the input shaft loses its precise alignment, leading to intermittent torque transfer. Vibration during acceleration signals uneven wear on the input splines, which can escalate into catastrophic failure if ignored. Delayed engagement when shifting from neutral to drive is another common symptom, often traced back to excessive clearance in this input assembly.
Technical Specifications
| Part Number | 4642.102.081 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 4.2 kg (9.26 lbs) |
| Length | 285 mm |
| Outer Diameter | 68 mm |
| Spline Count | 21 internal / 27 external |
| OEM Reference | ZF 4642.102.081 |
| Surface Treatment | Phosphate coated for corrosion resistance |
Compatibility
This input component is specifically designed for the WG 150 Series transmissions, but its spline geometry and bearing interfaces also make it compatible with select models in the WG 180 and WG 200 families when used with the correct adapter kits. It directly replaces the original input shaft in all WG150 variants produced after 2005. For proper installation, ensure the 0730365125: TYPE PLATE is correctly aligned to verify model year, and secure the assembly using the 0631311009: GROOVED STUD for precise torque retention.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Encloses gear train and supports input shaft |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for clutch pack assembly |
| 0730365125 | TYPE PLATE | Identification plate for transmission model verification |
| 0631311009 | GROOVED STUD | Fastener for securing input assembly to housing |
| 4642301168 | SCREEN SHEET | Filter mesh for oil debris protection |
| 4642301169 | SCREEN SHEET | Secondary filter element for hydraulic circuit |
| 0636100621 | HEXAGON SCREW | Mounting bolt for valve body attachment |
| 4642301186 | SCREEN SHEET | Fine mesh screen for pressure line filtration |
| 4644159321 | SHIFT SYSTEM | Electro-hydraulic shift control module |
| 4644306565 | VALVE HOUSING | Main control valve body for clutch modulation |
