Overview
The ZF 4616.203.007 DISC CARRIER is a critical internal component engineered for the WG 65 Series transmission. This genuine OEM part functions as the primary hub that houses and positions the clutch disc packs, ensuring precise torque transfer and smooth gear engagement under heavy-duty loads. Located within the main gear train assembly, the disc carrier directly interfaces with the 4616105415: OUTPUT shaft to maintain rotational alignment. The SKU 4616.203.007 is manufactured to ZF’s exacting tolerances, using high-strength alloy steel to withstand the cyclic stresses of commercial vehicle operation. When this carrier wears or distorts, it compromises the entire clutch pack alignment, leading to performance degradation across the drivetrain.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn disc carrier allows excessive axial play, causing clutch packs to engage unevenly. Operators often report a noticeable “clunk” or lag when shifting between forward and reverse gears.
- Intermittent gear slipping under load: As the carrier’s splines or bearing surfaces degrade, torque transmission becomes inconsistent. This symptom is especially pronounced during uphill climbs or when towing heavy trailers.
- Metallic debris in transmission fluid: Friction between a distorted disc carrier and the 4616101094: TRANSMISSION HOUSING generates fine steel particles. These contaminants accelerate wear on other internal components, including the 4616303144: OUTPUT FLANGE.
- Oil leaks near the output shaft seal: Carrier misalignment can place lateral stress on the 0636011038: HEXAGON SCREW fasteners securing the housing, leading to seal distortion and fluid loss.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4616.203.007 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Outer Diameter | 198 mm |
| Inner Spline Diameter | 45 mm |
| Overall Height | 72 mm |
| Weight | 3.85 kg |
| Surface Treatment | Phosphate coating for corrosion resistance |
| OEM Reference | ZF 4616.203.007 |
Compatibility
This disc carrier is specifically designed for the ZF WG 65 Series transmission family. It is directly compatible with the following models: WG65, WG80, WG100, WG120, WG150, WG180, and WG200. The part also fits select ZF Ecomat 4HP and 5HP variants that share the same clutch pack architecture. Always verify your transmission’s serial number against the OEM parts catalog before installation. For complete assembly, this carrier must be paired with the correct 0636011038: HEXAGON SCREW torque specifications to prevent housing distortion.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105415 | Output | Transfers torque from disc carrier to driveshaft |
| 4616303144 | Output Flange | Connects output shaft to universal joint |
| 4616101094 | Transmission Housing | Encloses and supports all rotating assemblies |
| 0636011038 | Hexagon Screw | Secures housing halves together |
| 0636011118 | Hexagon Screw | Fastens output flange to shaft |
| 0636016015 | Hexagon Screw | Mounts disc carrier to clutch hub |
| 0631306085 | Cylindrical Pin | Aligns disc carrier with clutch drum |
| 0634313118 | O-Ring | Seals oil passage between carrier and shaft |
| 0732611049 | Filter Insert | Traps debris from carrier wear particles |
| 0634303718 | O-Ring | Prevents fluid bypass at carrier bore |
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