Overview
The ZF 5838.300.306 INNER CLUTCH DISK is a critical friction component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part sits within the clutch pack assembly, where it transfers torque between rotating shafts during gear engagement. By providing precise frictional grip, the inner clutch disk ensures smooth power delivery and prevents driveline shudder under heavy loads. The SKU 5838.300.306 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and consistent performance in commercial vehicle applications. When paired with a properly functioning 5838022003: REAR AXLE, this disk maintains optimal drivetrain efficiency.
Symptoms of Failure
- Gear Slipping Under Load: Worn friction material on the 5838.300.306 causes the clutch pack to lose grip, resulting in RPM flare without corresponding vehicle acceleration, especially during hill climbs.
- Delayed or Harsh Shifting: A degraded inner clutch disk creates erratic engagement timing, leading to jarring gear changes or hesitation when moving from neutral to drive.
- Transmission Overheating: Excessive slippage generates abnormal heat, often indicated by burnt oil smell or dashboard warning lights, accelerating wear on adjacent components like the 5838109001: DIFFERENTIAL.
- Metallic Grinding Noises: As the friction lining wears down to the steel core, metal-on-metal contact produces audible grinding, signaling imminent failure of the clutch pack assembly.
Technical Specifications
| Part Number | 5838.300.306 |
| Type | Inner Clutch Disk (Friction Plate) |
| 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 |
| OEM Reference | ZF 5838.300.306 |
| Torque Capacity | Up to 1,200 Nm (system-dependent) |
Compatibility
This inner clutch disk is specifically designed for ZF’s WG100, WG130, and WG131 transmissions, commonly found in medium-duty trucks, buses, and construction equipment. It also fits select variants of the WG180 and WG200 series when used in the same clutch pack configuration. For proper installation, always inspect the 0750117075: TAPER ROLLER BEARING and the 5838300128: DIFFERENTIAL HOUSING for wear, as these components share the same lubrication circuit. Verify your transmission model’s parts catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838022003 | Rear Axle | Transfers power from differential to wheels |
| 5838109001 | Differential | Distributes torque between drive wheels |
| 0750117075 | Taper Roller Bearing | Supports rotating shafts under axial loads |
| 5838300128 | Differential Housing | Encloses differential gear set |
| 0631329086 | Spring Pin | Secures clutch pack alignment |
| 5838300129 | Thrust Washer | Reduces axial friction in gear train |
| 5838300130 | Thrust Washer | Controls end-play in differential assembly |
| 5838300131 | Axle Bevel Gear | Changes torque direction in differential |
| 5838300132 | Compens. Stub Axle | Balances wheel speed differences |
| 5838300133 | Compens. Stub Axle | Secondary axle for torque compensation |
ZF 5838.300.306 INNER CLUTCH DISK – Clutch Disk RFQ Support
Use ZF 5838.300.306 INNER CLUTCH DISK when preparing clutch-pack sourcing requests. PartsZF can review the number, related parts, and documentation requirements before quotation.
Part-Number Summary
Use ZF number 5838.300.306 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 | 5838.300.306 |
|---|---|
| Normalized SKU | 5838300306 |
| 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 5838.300.307 OUTER CLUTCH DISK
- ZF 0501.342.428 OUTER CLUTCH DISK
- ZF 0501.342.427 INNER CLUTCH DISK
- ZF 0501.216.833 LINED CLUTCH DISK
- ZF 0750.140.049 INNER CLUTCH DISK
