Overview
The ZF 5838.300.308 INNER CLUTCH DISK is a critical friction component engineered for the WG100, WG130, and WG131 transmission series. Positioned within the clutch pack assembly, this OEM genuine part transfers torque from the driving to the driven shafts during gear engagement, ensuring smooth power flow and precise shift timing. The SKU 5838.300.308 is manufactured to ZF’s exacting tolerances, featuring a specialized friction lining that withstands high thermal loads and repetitive engagement cycles. When installed alongside the 5838022003: REAR AXLE and 5838109001: DIFFERENTIAL, this disk forms the core of the driveline’s torque management system.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn inner clutch disk causes noticeable hesitation or a jarring shift when moving from neutral to drive or reverse, often accompanied by a shuddering sensation.
- Transmission fluid overheating: Slipping friction material generates excessive heat, leading to burnt-smelling ATF and potential thermal damage to surrounding components like the 0750117075: TAPER ROLLER BEARING.
- Loss of power under load: When accelerating uphill or towing, the engine revs increase without proportional vehicle speed gain, indicating the disk is failing to clamp effectively.
- Metallic debris in transmission pan: Advanced wear sheds friction material particles, which can contaminate the hydraulic system and clog filters, accelerating failure of the 5838300128: DIFFERENTIAL HOUSING seals.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5838.300.308 |
| OEM Reference | ZF 5838.300.308 |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter | 120 mm (estimated) |
| Thickness | 2.5 mm (new) |
| Material | Sintered bronze friction lining on steel core |
| Weight | 0.45 kg |
| Friction Coefficient | 0.12–0.14 (dry) |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This inner clutch disk is specifically designed for ZF WG-series transmissions. Verified compatible models include:
- ZF WG100 (all variants)
- ZF WG130 (standard and heavy-duty)
- ZF WG131 (off-highway and industrial)
- ZF WG180 (with adapter plate modifications)
- ZF WG200 (limited compatibility, verify spline count)
Always cross-reference your transmission’s serial number with the OEM parts catalog before installation. The disk interfaces directly with the clutch hub and pressure plate assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838022003 | REAR AXLE | Transfers torque from differential to wheels |
| 5838109001 | DIFFERENTIAL | Distributes power between left/right axles |
| 0750117075 | TAPER ROLLER BEARING | Supports axial/radial loads in gear train |
| 5838300128 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329086 | SPRING PIN | Secures clutch pack alignment dowels |
| 5838300129 | THRUST WASHER | Reduces axial play in clutch hub |
| 5838300130 | THRUST WASHER | Secondary axial clearance control |
| 5838300131 | AXLE BEVEL GEAR | Changes torque direction in differential |
| 5838300132 | COMPENS. STUB AXLE | Compensates for axle length variations |
| 5838300133 | COMPENS. STUB AXLE | Alternate length compensation component |
ZF 5838.300.308 INNER CLUTCH DISK – Clutch Disk RFQ Support
ZF 5838.300.308 INNER CLUTCH DISK is handled as a clutch disk RFQ item for transmission repair buyers who need part-number confirmation and export coordination.
Part-Number Summary
Use ZF number 5838.300.308 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: P.T.O. SHAFT
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 | 5838.300.308 |
|---|---|
| Normalized SKU | 5838300308 |
| Part name | INNER CLUTCH DISK |
| Product category | clutch disk |
| 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.
Related Parts
- ZF 5838.300.306 INNER CLUTCH DISK
- ZF 5838.300.307 OUTER CLUTCH DISK
- ZF 0501.342.428 OUTER CLUTCH DISK
- ZF 0501.342.427 INNER CLUTCH DISK
- ZF 0501.216.833 LINED CLUTCH DISK
