Overview
The ZF 5838.300.376 T-ADAPTER is a critical OEM genuine component designed for heavy-duty construction machinery transmissions. This adapter serves as the primary interface between the transmission output shaft and the driveline, ensuring precise torque transfer and alignment within the powertrain assembly. As a factory-spec part, the SKU 5838.300.376 guarantees exact fitment and durability under extreme loads. It is mounted directly on the transmission housing, where it connects to the 5838022003: REAR AXLE and works in tandem with the 5838109001: DIFFERENTIAL to distribute power efficiently. Without this T-Adapter, the transmission cannot properly engage the final drive components, making it a linchpin for operational reliability.
Symptoms of Failure
When the ZF 5838.300.376 T-ADAPTER begins to wear, operators will notice distinct performance issues. Oil seepage around the adapter flange is a primary indicator, often caused by degraded seals or housing cracks. Vibration during acceleration under load suggests spline wear or misalignment, which can escalate into driveline damage. Intermittent gear engagement failure occurs when the adapter loses its structural integrity, preventing the transmission from locking into higher gears. Metallic debris in the transmission fluid is a late-stage symptom, signaling that the adapter’s internal surfaces are eroding. Addressing these issues promptly avoids cascading failures to the 0750117075: TAPER ROLLER BEARING and the 5838300128: DIFFERENTIAL HOUSING.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5838.300.376 |
| Product Type | T-Adapter (Transmission Adapter) |
| Material | High-strength ductile iron (GJS-500-7) |
| Overall Length | 185 mm |
| Flange Diameter | 120 mm |
| Weight | 4.2 kg |
| OEM Reference | ZF 5838.300.376 |
| Bolt Pattern | 6x M12 on 90 mm PCD |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This T-Adapter is engineered for ZF’s WG series transmissions commonly deployed in wheel loaders, excavators, and graders. It is directly compatible with the WG180, WG200, and WG211 models. Additionally, it fits select ZF 4WG-200 and ZF 5WG-200 variants used in off-highway construction equipment. Always verify your transmission model tag before ordering, as adapter configurations vary by torque rating and housing design.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838022003 | REAR AXLE | Transmits torque from adapter to wheels |
| 5838109001 | DIFFERENTIAL | Distributes power between axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on adapter |
| 5838300128 | DIFFERENTIAL HOUSING | Encloses differential and adapter interface |
| 0631329086 | SPRING PIN | Secures adapter alignment during assembly |
| 5838300129 | THRUST WASHER | Reduces axial friction on adapter shaft |
| 5838300130 | THRUST WASHER | Secondary axial load distribution |
| 5838300131 | AXLE BEVEL GEAR | Transfers rotational force from adapter |
| 5838300132 | COMPENS. STUB AXLE | Compensates for thermal expansion |
| 5838300133 | COMPENS. STUB AXLE | Secondary expansion compensation |
