Overview
The ZF 4143.351.073 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 transfers torque between rotating elements under hydraulic pressure. As a wear item, the outer clutch disk ensures smooth engagement and disengagement of gear sets, directly influencing shift quality and driveline efficiency. The SKU 4143.351.073 is precision-machined to ZF’s original tolerances, guaranteeing a direct fit without modification. For optimal assembly integrity, this disk is frequently paired with the 4143101025 HOUSING and the 4143301055 HOUSING, which provide the structural support for the clutch stack.
Symptoms of Failure
When the 4143.351.073 outer clutch disk degrades, operators may notice several distinct performance issues. Gear slipping under load is a primary indicator, often accompanied by erratic shift timing or delayed engagement. Burnt transmission fluid odor frequently arises from excessive friction heat generated by a worn disk surface. Additionally, intermittent loss of power transfer during acceleration can signal that the disk’s friction material has worn below specification. In severe cases, metallic debris in the oil pan confirms that the clutch disk has begun to disintegrate, necessitating immediate replacement to prevent damage to the 4143298040 CASE and surrounding components.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4143.351.073 |
| 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 4143.351.073 |
| Friction Surface | Paper-based composite |
Compatibility
This outer clutch disk is designed for ZF transmissions in the HL 100 and HL 270 series, including models such as the WG180, WG200, 4WG180, and 4WG200. It also fits select Ecomat and Ecolife variants that share the same clutch pack architecture. Always verify your transmission’s serial number against the OEM parts catalog. During installation, the 0631329135 SPRING PIN is often replaced concurrently to ensure proper alignment and retention of the clutch pack assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101025 | HOUSING | Encloses clutch pack assembly |
| 4143301055 | HOUSING | Supports planetary gear set |
| 4143298040 | CASE | Main transmission housing |
| 0631329135 | SPRING PIN | Secures clutch pack alignment |
| 0501337904 | SPEED SENSOR | Monitors output shaft RPM |
| 0636101024 | CAP SCREW | Fastens housing components |
| 4475280099 | SCREW PLUG | Seals hydraulic passages |
| 0634303266 | O-RING | Prevents fluid leaks |
| 0501200072 | VENT VALVE | Equalizes internal pressure |
| 4475280015 | SCREW PLUG | Oil drain plug |
ZF 4143.351.073 OUTER CLUTCH DISK – Clutch Disk RFQ Support
PartsZF helps B2B buyers source ZF 4143.351.073 OUTER 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 4143.351.073 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 | 4143.351.073 |
|---|---|
| Normalized SKU | 4143351073 |
| Part name | OUTER CLUTCH DISK |
| Product category | clutch disk |
| Cross-reference support | Available for RFQ review |
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.
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