Overview
The ZF 4108.301.339 INPUT SHAFT is a critical torque-transfer component engineered for the WG100, WG130, and WG131 series transmissions. As the primary rotating element that receives engine power from the clutch or torque converter, this OEM genuine shaft transmits rotational force directly into the gear train. The SKU 4108.301.339 is precision-machined to maintain exacting axial alignment and spline engagement, ensuring smooth power delivery under heavy-duty industrial loads. This input shaft sits at the front of the transmission housing, interfacing directly with the 4108101061: HOUSING and the 4108301304: BEARING COVER to form a sealed, lubricated assembly.
Symptoms of Failure
- Transmission gear slipping under load: A worn input shaft spline can cause intermittent disengagement between the clutch disc and the gear set, leading to power loss during acceleration or uphill operation.
- Oil leaks at the front housing seal: Excessive radial play from a damaged shaft surface can degrade the seal lip, resulting in visible transmission fluid seepage around the 4108201156: HOUSING interface.
- Abnormal vibration or whining noise: Bent or unbalanced input shafts generate harmonic vibrations that resonate through the drivetrain, often accompanied by a high-pitched whine in neutral or low gear.
- Hard shifting or gear clash: Worn bearing journals on the shaft prevent proper synchronization, causing grinding noises when engaging forward or reverse gears.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4108.301.339 |
| Overall Length | 285 mm (estimated) |
| Spline Major Diameter | 32 mm |
| Bearing Journal Diameter | 45 mm |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 2.8 kg (approx.) |
| OEM Reference | ZF 4108.301.339 |
| Surface Hardness | 58–62 HRC |
Compatibility
This genuine ZF input shaft is specifically designed for the WG100, WG130, and WG131 transmission models. It also fits select variants of the WG180 and WG200 series when used with the correct 0631311009: GROOVED STUD and 0630502039: RETAINING RING for axial retention. Always verify your transmission serial number against the OEM parts catalog to confirm fitment. The shaft requires a compatible 4108306173: GASKET to seal the housing interface properly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101061 | HOUSING | Encloses the input shaft and gear set |
| 4108201156 | HOUSING | Rear housing for bearing support |
| 4108301304 | BEARING COVER | Seals the front bearing bore |
| 4108306173 | GASKET | Prevents oil leakage at housing joint |
| 0730365280 | TYPE PLATE | Identification tag for transmission model |
| 0631311009 | GROOVED STUD | Fastener for bearing cover alignment |
| 0750116277 | BALL BEARING | Supports input shaft rotation |
| 0630502039 | RETAINING RING | Axial lock for bearing assembly |
| 0630000041 | SHIM RING | Adjusts bearing preload clearance |
| 0630531064 | RETAINING RING | Secures gear on input shaft spline |
ZF 4108.301.339 INPUT SHAFT – Shaft RFQ Support
For ZF 4108.301.339 INPUT SHAFT, send the part number, removed-part photos, and application context so PartsZF can prepare a focused sourcing response.
Part-Number Summary
Use ZF number 4108.301.339 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: HOUSING
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 4108.301.339 |
|---|---|
| Normalized SKU | 4108301339 |
| Part name | INPUT SHAFT |
| Product category | shaft |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
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