Overview
The ZF 4645.351.020 Outer Clutch Disk is a critical friction component engineered for the WG100, WG130, and WG131 automatic transmission series. This OEM genuine part sits within the clutch pack assembly, where it transfers torque between rotating elements during gear shifts. The SKU 4645.351.020 ensures precise engagement and disengagement of the clutch system, directly influencing shift quality and driveline efficiency. When installed alongside the 4143101009 HOUSING and 4143301025 HOUSING, this disk maintains proper hydraulic pressure distribution within the transmission.
Symptoms of Failure
- Delayed or harsh gear engagement: Worn friction material on the outer clutch disk causes hesitation when shifting from neutral to drive or reverse, often accompanied by a noticeable jolt.
- Transmission slipping under load: As the disk loses its friction coefficient, the transmission may momentarily lose power delivery during acceleration, particularly in higher gears.
- Burning odor from transmission fluid: Overheated clutch material generates a distinct acrid smell, indicating the disk is no longer gripping effectively and generating excessive heat.
- Erratic shift patterns: The transmission may hunt between gears or fail to hold a gear, as the worn disk cannot maintain consistent hydraulic clamping force.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4645.351.020 |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter | 130 mm (estimated) |
| Thickness | 2.5 mm (estimated) |
| Material | High-carbon steel with sintered bronze friction lining |
| Weight | 0.45 kg (estimated) |
| OEM Reference | ZF 4645.351.020 |
| Torque Capacity | Up to 1,200 Nm (estimated) |
Compatibility
This outer clutch disk is specifically designed for ZF WG100, WG130, and WG131 automatic transmissions. It is also compatible with the WG180 and WG200 series when used in clutch pack configurations requiring the same friction plate dimensions. For proper sealing during installation, always replace the 0634313603 O-RING and verify the 4475280018 SCREW PLUG is torqued to specification. This disk is not backward-compatible with older WG80 or WG90 models without modification to the clutch hub assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101009 | HOUSING | Encloses the clutch pack and directs hydraulic fluid flow |
| 4143301025 | HOUSING | Provides structural support for the clutch drum assembly |
| 0634313603 | O-RING | Seals the clutch piston bore to prevent fluid leakage |
| 4475280018 | SCREW PLUG | Secures the clutch housing and prevents oil bypass |
| 0501342341 | SUPPORT RING | Positions the clutch disk stack and absorbs axial loads |
| 4143298457 | SEAL KIT | Contains all seals for complete clutch overhaul |
| 0634313591 | O-RING | Seals the clutch cover to the transmission case |
| 0636101068 | CAP SCREW | Fastens the clutch housing to the transmission bell housing |
| 4143221013 | THROTTLE VALVE | Modulates hydraulic pressure to the clutch pack |
| 0634304484 | O-RING | Seals the throttle valve bore in the valve body |
ZF 4645.351.020 OUTER CLUTCH DISK – Clutch Disk RFQ Support
PartsZF helps B2B buyers source ZF 4645.351.020 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 4645.351.020 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: COUPLING
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 | 4645.351.020 |
|---|---|
| Normalized SKU | 4645351020 |
| Part name | OUTER CLUTCH DISK |
| Product category | clutch disk |
| Cross-reference support | Available for RFQ review |
| Weight | 0.036 |
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.
Related Parts
- ZF 4646.351.182 INNER CLUTCH DISK
- ZF 2093.359.051 INNER CLUTCH DISK
- ZF 0501.313.598 OUTER CLUTCH DISK
- ZF 4661.351.003 OUTER CLUTCH DISK
- ZF 0501.228.272 INNER CLUTCH DISK
