Overview
The ZF 0501.330.661 INNER CLUTCH DISK is a critical friction component engineered for the WG100, WG130, and WG131 series transmissions. This OEM genuine part resides within the clutch pack assembly, where it transfers torque between rotating shafts during gear shifts. By providing precise frictional engagement, the 0501.330.661 ensures smooth power delivery and prevents driveline shudder under heavy loads. This disk is often replaced alongside the 2098109042: DIFFERENTIAL and 2098309011: CROWN WHEEL during a full transmission overhaul to restore original performance.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn inner clutch disk causes hesitation when shifting from neutral to drive or reverse, often accompanied by a jarring thud.
- Transmission slipping under load: When the friction material degrades, the transmission may momentarily lose power during acceleration, especially on inclines or while towing.
- Burning smell from transmission fluid: Excessive heat generated by a glazed or worn disk produces a distinct burnt odor, indicating imminent clutch pack failure.
- Erratic shift patterns: The transmission may hunt for gears or shift at incorrect RPMs due to inconsistent hydraulic pressure caused by worn friction surfaces.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number (SKU) | 0501.330.661 |
| Type | Inner Clutch Disk (Friction Plate) |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter | 120 mm (estimated) |
| Thickness | 2.5 mm (new, nominal) |
| Material | High-carbon steel core with sintered bronze friction lining |
| Weight | 0.35 kg (approx.) |
| OEM Reference | ZF 0501.330.661 |
| Manufacturer | ZF Friedrichshafen AG (OEM) |
Compatibility
This inner clutch disk is specifically designed for ZF WG-series transmissions. It is a direct fit for the following models:
- ZF WG100
- ZF WG130
- ZF WG131
While primarily intended for these three models, the 0501.330.661 may also be compatible with earlier WG80 and WG120 variants when used in conjunction with the 2099209001: DIFFERENTIAL and 2098309010: DIFFERENTIAL HOUSING. Always verify your transmission’s clutch pack configuration before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098109042 | DIFFERENTIAL | Distributes torque between drive wheels |
| 2098309011 | CROWN WHEEL | Transfers power from pinion to differential |
| 2099209001 | DIFFERENTIAL | Final drive torque distribution assembly |
| 2098309010 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 2098309009 | DIFFERENTIAL HOUSING | Alternate housing variant for WG series |
| 2098309031 | AXLE BEVEL GEAR | Transfers rotation to axle shafts |
| 2098309030 | AXLE BEVEL GEAR | Matching bevel gear for differential set |
| 2098309032 | DIFFERENTIAL BEVEL GEAR | Planetary gear within differential carrier |
| 12883200682 | THRUST WASHER | Reduces axial friction between rotating parts |
| 0635332059 | BALL BEARING | Supports shaft rotation with minimal resistance |
ZF 0501.330.661 INNER CLUTCH DISK – Clutch Disk RFQ Support
Use ZF 0501.330.661 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 0501.330.661 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: FRONT AXLE DRIVE
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 | 0501.330.661 |
|---|---|
| Normalized SKU | 0501330661 |
| 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
