Overview
The ZF 4660.373.005 Disc Carrier is a critical internal component engineered for the WG92 and WG98 transmission series. This genuine OEM part functions as the primary mounting hub for the clutch disc pack, ensuring precise alignment and torque transfer within the planetary gearset. Located in the central rotating assembly, the disc carrier interfaces directly with the TRANSMISSION HOUSING and the HOUSING II to maintain proper clutch pack clearance. The SKU 4660.373.005 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in heavy-duty industrial applications.
Symptoms of Failure
When the 4660.373.005 disc carrier wears out, operators typically notice these specific failure modes:
- Erratic gear engagement or slipping – Worn carrier splines cause the clutch discs to misalign, leading to delayed or incomplete shifts under load.
- Metallic grinding noise from the transmission housing – Excessive play in the carrier allows the disc pack to contact the TRANSMISSION HOUSING, producing a distinct grinding sound during operation.
- Oil contamination with metallic debris – Flaking material from a fatigued carrier enters the hydraulic circuit, often clogging the SUCTION TUBE and reducing lubrication flow.
- Transmission overheating – A damaged carrier increases friction within the clutch pack, generating excess heat that can warp adjacent components like the HOUSING II.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4660.373.005 |
| Material | High-strength alloy steel, induction-hardened |
| Outer Diameter | 180 mm (estimated) |
| Inner Spline Diameter | 65 mm (estimated) |
| Weight | 2.8 kg (6.2 lbs) |
| OEM Reference | ZF 4660.373.005 |
| Surface Finish | Black oxide with phosphate coating |
Compatibility
This disc carrier is specifically designed for ZF WG92 and WG98 series transmissions. Based on its spline configuration and clutch pack dimensions, the 4660.373.005 is also compatible with the following ZF models: WG180, WG200, WG210, and WG250. It integrates with the CYLINDRICAL PIN for precise rotational alignment and is secured by the TYPE PLATE for proper identification during rebuilds. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101017 | TRANSMISSION HOUSING | Encloses the gear train and supports the disc carrier |
| 4660301054 | HOUSING II | Secondary housing section for clutch pack retention |
| 0631306174 | CYLINDRICAL PIN | Alignment pin for carrier-to-housing positioning |
| 0769123894 | TYPE PLATE | Identification plate for transmission model verification |
| 0750100022 | SCREW PLUG | Seals hydraulic passages in the housing |
| 4660221029 | SUCTION TUBE | Oil pickup tube for lubrication circuit |
| 0634100317 | O-RING | Seals the carrier-to-housing interface |
| 0636103273 | CAP SCREW | Fastener for securing the carrier assembly |
| 0634306311 | O-RING | Secondary seal for hydraulic pressure retention |
| 4660321029 | FIXING PLATE | Locks the carrier in position within the drum |
