Overview
The ZF 4108.301.345 INPUT SHAFT is a critical torque-transfer component positioned at the front of the transmission housing, directly coupling the engine’s output to the planetary gear sets. This OEM genuine part, identified by SKU 4108.301.345, is precision-machined to handle high rotational loads in heavy-duty ZF WG-series transmissions. It interfaces directly with the 4108101076 HOUSING and the 4108201217 HOUSING, ensuring concentric alignment and minimal vibration during operation.
Symptoms of Failure
When the ZF 4108.301.345 INPUT SHAFT begins to wear, operators often report gear slipping under load, particularly during acceleration or hill climbs. Another common symptom is persistent transmission oil leaks around the front seal area, caused by shaft wobble or surface scoring. You may also notice abnormal grinding or whining noises from the bell housing, indicating bearing surface degradation. Finally, difficulty engaging or disengaging gears can occur as the shaft’s splines wear, leading to delayed shift response.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4108.301.345 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Overall Length | 385 mm (estimated) |
| Spline Diameter | 42 mm (input end) |
| Weight | 4.8 kg (10.6 lbs) |
| OEM Reference | ZF 4108.301.345 |
| Hardness | 58-62 HRC (surface) |
Compatibility
This ZF 4108.301.345 INPUT SHAFT is engineered for the WG100, WG130, and WG131 transmission series. It also fits select variants of the WG180 and WG200 models when used with the correct 4108301304 BEARING COVER and 4108306173 GASKET. Always verify your transmission’s serial number against OEM fitment charts before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101076 | HOUSING | Front transmission case, supports input shaft bearing |
| 4108201217 | HOUSING | Intermediate housing, aligns shaft with planetary gears |
| 4108301304 | BEARING COVER | Seals and preloads the input shaft bearing |
| 4108306173 | GASKET | Prevents oil leaks between housing and cover |
| 0730365280 | TYPE PLATE | Identification tag for transmission model |
| 0631311009 | GROOVED STUD | Mounting fastener for housing alignment |
| 0735330931 | BALL BEARING | Supports input shaft radial and axial loads |
| 0630532160 | RETAINING RING | Secures bearing in housing bore |
| 0730102947 | SHIM | Adjusts bearing preload and end play |
| 0630531130 | RETAINING RING | Locks shaft assembly axially |
ZF 4108.301.345 INPUT SHAFT – Shaft RFQ Support
For ZF 4108.301.345 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 4108.301.345 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 | 4108.301.345 |
|---|---|
| Normalized SKU | 4108301345 |
| 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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- ZF 2093.110.011 P.T.O. SHAFT
- ZF 5838.300.106 INPUT SHAFT
