Overview
The ZF 4143.351.029 OUTER CLUTCH DISK is a critical friction component engineered for the HL 100 and HL 270 series transmissions. This OEM genuine part sits within the clutch pack assembly, where it interfaces directly with the inner clutch plates to transfer torque during gear engagement. The SKU 4143.351.029 is specifically designed to withstand high thermal loads and shear forces, ensuring consistent power delivery in heavy-duty industrial applications. When paired with the 4143101014: HOUSING and 4143301025: HOUSING, this outer disk forms a sealed clutch chamber that prevents contamination and maintains hydraulic pressure.
Symptoms of Failure
- Delayed gear engagement or slipping under load: When the outer clutch disk wears thin, the clutch pack loses clamping force, causing the transmission to hesitate or slip during acceleration. This is a common symptom in HL 270 units operating under heavy torque.
- Burnt transmission fluid odor: Friction material degradation from the 4143.351.029 disk generates excessive heat, leading to a distinct burnt smell in the hydraulic oil. This often accompanies visible darkening of the fluid.
- Erratic shifting or harsh engagement: A warped or glazed outer disk disrupts the smooth application of clutch pressure, resulting in jarring shifts or unexpected gear drops. Operators may notice vibration through the driveline.
- Oil leaks near the clutch housing: Worn disk tolerances can compromise the seal between the 0634313603: O-RING and the housing, allowing transmission fluid to escape past the 4475280018: SCREW PLUG.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4143.351.029 |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter | 120 mm (estimated) |
| Thickness | 3.5 mm (new) |
| Material | Sintered bronze on steel core |
| Weight | 0.45 kg |
| OEM Reference | ZF 4143.351.029 |
| Friction Coefficient | 0.12 (wet) |
Compatibility
This outer clutch disk is directly compatible with ZF HL 100 and HL 270 series transmissions. It is also a serviceable component in the WG180, WG200, and WG210 models where the clutch pack dimensions match. The 4143.351.029 disk is often replaced alongside the 0501342341: SUPPORT RING and 4143298457: SEAL KIT to restore full clutch integrity. For HL 270 applications, verify the stack height using the 0634313591: O-RING and 0636101068: CAP SCREW during reassembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101014 | HOUSING | Encloses the clutch pack and directs oil flow |
| 4143301025 | HOUSING | Secondary housing for clutch support structure |
| 0634313603 | O-RING | Seals the clutch housing against fluid leaks |
| 4475280018 | SCREW PLUG | Secures hydraulic passages in the clutch assembly |
| 0501342341 | SUPPORT RING | Positions the outer disk within the clutch pack |
| 4143298457 | SEAL KIT | Contains all seals for clutch overhaul |
| 0634313591 | O-RING | Seals the piston bore in the clutch housing |
| 0636101068 | CAP SCREW | Fastens the clutch cover to the housing |
| 4143221014 | THROTTLE VALVE | Controls clutch apply pressure modulation |
| 0634313164 | O-RING | Seals the throttle valve bore |
ZF 4143.351.029 OUTER CLUTCH DISK – Clutch Disk RFQ Support
Use ZF 4143.351.029 OUTER 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 4143.351.029 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: MULTIDISK BRAKE
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 | 4143.351.029 |
|---|---|
| Normalized SKU | 4143351029 |
| Part name | OUTER 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
