Overview
The ZF 4616.102.038 INPUT for WG65 is a critical OEM genuine component designed to transfer rotational force from the engine directly into the gear set of your ZF WG 65 Series transmission. As the primary torque receiver, this input shaft assembly ensures smooth power delivery and precise gear engagement under heavy-duty operating conditions. The SKU 4616.102.038 is precision-machined to factory tolerances, guaranteeing a direct fit and long service life. When paired with a robust TRANSMISSION HOUSING, this input component forms the backbone of your drivetrain’s reliability.
Symptoms of Failure
- Oil leaks around the bell housing: A worn input shaft seal or damaged splines can allow transmission fluid to escape, often visible as drips near the engine-transmission junction.
- Gear slipping under load: When the input shaft bearings degrade, the shaft may wobble, causing intermittent power loss or unexpected gear disengagement during acceleration.
- Grinding noise during shifting: Excessive play in the input shaft splines produces a metallic grinding sound, especially when engaging first or reverse gear.
- Vibration at highway speeds: A bent or fatigued input shaft creates driveline vibrations that intensify with RPM, indicating imminent failure.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4616.102.038 |
| Material | Case-hardened alloy steel (20MnCr5) |
| Overall Length | 285 mm |
| Spline Diameter | 38 mm (1.496 in) |
| Weight | 4.2 kg (9.26 lbs) |
| OEM Reference | ZF 4616.102.038 |
| Torque Capacity | 1,200 Nm (885 lb-ft) |
Compatibility
This genuine ZF input shaft is engineered for the WG 65 Series transmission family. It is directly compatible with the following models: WG65, WG80, WG120, WG150, WG180, and WG200. The part also fits select ZF Ecomat and Ecolife variants that share the same input spline geometry. For proper installation, always use the correct HEXAGON SCREW (M10x1.5) to secure the input shaft flange, along with the HEXAGON SCREW (M12x1.75) for the bearing retainer. The HEXAGON SCREW (M8x1.25) is required for the oil pump drive gear attachment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616101065 | TRANSMISSION HOUSING | Encloses and supports all internal gear components |
| 0636011038 | HEXAGON SCREW | Secures input shaft flange to housing |
| 0636011118 | HEXAGON SCREW | Fastens bearing retainer to transmission case |
| 0636016015 | HEXAGON SCREW | Attaches oil pump drive gear to input shaft |
| 0631306085 | CYLINDRICAL PIN | Aligns input shaft with clutch hub |
| 0634313118 | O-RING | Seals input shaft bore against oil leakage |
| 0636304019 | SCREW PLUG | Closes oil passage in input shaft center |
| 0634801152 | SEALING RING | Prevents fluid bypass at shaft shoulder |
| 0732611049 | FILTER INSERT | Traps debris in input shaft lubrication circuit |
| 0634303718 | O-RING | Seals oil pump cover against input shaft |
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
