Overview
The ZF 4642.102.202 INPUT for WG150 is a critical driveline component engineered to transfer torque from the engine directly into the transmission’s planetary gearset. As an OEM genuine part, this input shaft ensures precise alignment and minimal rotational play within the WG 150 series housing. The SKU 4642.102.202 is machined from high-strength alloy steel to withstand the cyclic loads common in heavy-duty industrial applications. It sits at the front of the transmission assembly, directly coupling with the torque converter and the TRANSMISSION HOUSING to maintain concentricity under full load.
Symptoms of Failure
- Transmission input shaft oil leaks – Worn seals around the 4642.102.202 can allow ATF to escape, leaving puddles under the bell housing and reducing hydraulic pressure.
- Gear engagement delay or slipping – A damaged input shaft spline causes intermittent power loss, especially when shifting from neutral to drive under load.
- Abnormal vibration at the front of the transmission – Bent or fatigued input shafts produce a low-frequency rumble that intensifies with engine RPM, often misdiagnosed as a torque converter issue.
- Metallic debris in the transmission pan – Flaking or spalling on the shaft surface introduces ferrous particles into the oil, accelerating wear on the TRANSMISSION HOUSING and internal bearings.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4642.102.202 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 312 mm (approx.) |
| Spline Major Diameter | 42 mm |
| Weight | 4.8 kg (10.6 lbs) |
| OEM Reference | ZF 4642.102.202 |
| Surface Treatment | Black oxide + phosphate coating |
Compatibility
This genuine input shaft is primarily designed for the ZF WG 150 series. It is also compatible with the WG 180 and WG 200 transmissions when used with the correct pilot bearing adapter. The 4642.102.202 fits all WG 150 variants, including the WG150-6 and WG150-8, and is a direct replacement for earlier revision shafts. Always verify the spline count and pilot bore depth against your existing unit. For correct identification, refer to the TYPE PLATE affixed to your transmission housing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing that supports the input shaft and gearset |
| 4642301205 | TRANSMISSION HOUSING | Alternate housing variant for WG150 series |
| 0730365125 | TYPE PLATE | Identification plate with transmission model and serial number |
| 0631311009 | GROOVED STUD | Locating stud for precise housing alignment |
| 4642301168 | SCREEN SHEET | Fine mesh filter for oil sump protection |
| 4642301169 | SCREEN SHEET | Secondary filter screen for high-flow circuits |
| 0636100621 | HEXAGON SCREW | Fastener for securing housing covers |
| 4642301186 | SCREEN SHEET | Replacement screen for WG150 oil pan |
| 4644106231 | SHIFT SYSTEM | Hydraulic shift actuator assembly |
| 4644306470 | GASKET | Sealing gasket for housing mating surfaces |
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