Overview
This genuine ZF 0501.327.423 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 part transfers torque between rotating shafts during gear shifts, enabling smooth power delivery under heavy industrial loads. The SKU 0501.327.423 ensures precise engagement and disengagement of the clutch system, directly influencing driveline efficiency and operator control. When paired with a robust DIFFERENTIAL and a reliable TAPER ROLLER BEARING, this disk forms the backbone of a durable transmission rebuild.
Symptoms of Failure
- Erratic gear engagement or clutch slipping under load: Worn friction material on the 0501.327.423 disk reduces clamping force, causing the transmission to slip during acceleration or uphill travel.
- Delayed or harsh shifting: As the inner clutch disk loses its friction coefficient, hydraulic pressure struggles to lock the clutch pack, leading to jarring shifts or hesitation between gears.
- Metallic grinding noises from the bell housing: Excessive wear exposes the steel core, allowing metal-on-metal contact that produces audible grinding sounds during operation.
- Contaminated transmission fluid with dark particles: Degraded friction material sheds debris into the oil, often visible as dark specks on the dipstick or filter.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 0501.327.423 |
| Outer Diameter | 180 mm (approx.) |
| Inner Diameter | 120 mm (approx.) |
| Thickness | 3.5 mm (new) |
| Material | Sintered bronze on steel core |
| Weight | 0.45 kg |
| OEM Reference | ZF 0501.327.423 |
Compatibility
This inner clutch disk is specifically designed for ZF WG100, WG130, and WG131 powershift transmissions commonly found in construction loaders, forklifts, and agricultural tractors. It is also compatible with select WG180 and WG200 variants that share the same clutch pack architecture. Always verify the clutch stack height using a service manual before installation. For complete driveline restoration, consider replacing the DIFFERENTIAL and inspecting the DIFFERENTIAL HOUSING for cracks or warpage.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109018 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on shafts |
| 2093209023 | DIFFERENTIAL | Alternative differential for heavy-duty axles |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and supports differential gears |
| 0631329088 | SPRING PIN | Secures clutch pack alignment |
| 5838300811 | THRUST WASHER | Reduces axial friction in rotating assemblies |
| 5838300721 | AXLE BEVEL GEAR | Transfers power at right angles in the axle |
| 5838300633 | AXLE | Transmits rotational force to wheel hubs |
| 5838300753 | THRUST WASHER | Prevents gear end-play in the differential |
| 5838300818 | THRUST WASHER | Controls axial clearance in clutch packs |
Frequently Asked Questions
Q: Can I reuse the old inner clutch disk if it looks slightly glazed?
A: No. Glazing indicates heat damage and reduced friction coefficient. Always replace the 0501.327.423 disk with a new OEM unit to prevent premature clutch failure.
Q: How do I know if this disk fits my WG130 transmission?
A: Check the clutch pack stack height in your service manual. The 0501.327.423 disk is standard for WG100, WG130, and WG131 models. For WG180 or WG200, measure the inner spline diameter to confirm compatibility.
Q: Should I replace the thrust washers when installing this disk?
A: Yes. Worn thrust washers like 5838300811 or 5838300753 can alter clutch clearance. Replace them simultaneously to ensure correct pack preload and long service life.
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ZF 0501.327.423 INNER CLUTCH DISK – Clutch Disk RFQ Support
PartsZF helps B2B buyers source ZF 0501.327.423 INNER CLUTCH DISK with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This clutch disk page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 0501.327.423 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: MAIN CLUTCH
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 | 0501.327.423 |
|---|---|
| Normalized SKU | 0501327423 |
| Part name | INNER CLUTCH DISK |
| Product category | clutch disk |
| Cross-reference support | Available for RFQ review |
| Weight | 0.32 |
Image and Documentation Notes
Current product media status: diagram. 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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