Overview
The ZF 4661.044.007 3 WG 94 Powershift Transmission Assembly is a complete, factory-spec unit designed for heavy-duty off-highway applications. This assembly integrates the main gear cluster and clutch pack system within the WG 94 series architecture. As a direct replacement, the SKU 4661.044.007 ensures seamless integration with your existing driveline. It sits centrally within the transmission housing, transferring torque from the torque converter to the output shaft. For structural integrity, this unit mates precisely with the TRANSMISSION HOUSING and the HOUSING II, forming a sealed assembly that withstands extreme loads.
Symptoms of Failure
- Erratic gear engagement or slipping under load: When the 4661.044.007 assembly wears, internal clutch packs fail to hold pressure, causing the transmission to slip during acceleration or on inclines.
- External oil leaks at the housing seam: Degraded seals around the assembly allow hydraulic fluid to escape, often pooling near the bell housing or output flange.
- Delayed or harsh shifting: Worn components within the unit cause a noticeable lag between gear changes or a jarring engagement, indicating internal hydraulic imbalance.
- Metallic grinding or whining noise: Bearing or gear wear inside the assembly produces audible noise that intensifies with speed, signaling imminent failure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4661.044.007 |
| Assembly Type | Complete Powershift Unit (3 WG 94) |
| OEM Reference | ZF 3 WG 94 Series |
| Estimated Weight | 185 kg (408 lbs) |
| Housing Material | High-Grade Cast Iron |
| Overall Length | 620 mm |
| Overall Width | 480 mm |
| Overall Height | 510 mm |
| Mounting Hardware | Includes CYLINDRICAL PIN and TYPE PLATE |
Compatibility
This assembly is engineered for the ZF WG 94 series, specifically the 3 WG 94 variant. It is compatible with WG180, WG200, and WG210 models that share the same clutch and gear architecture. Always verify your transmission serial number against the OEM parts list. The unit also interfaces with critical ancillaries such as the SCREW PLUG and SCREW PLUG for hydraulic circuit sealing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101039 | TRANSMISSION HOUSING | Main structural casing for gear and shaft support |
| 4661301109 | HOUSING II | Secondary housing for clutch pack and valve body |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise housing mating |
| 0769123894 | TYPE PLATE | Identification plate with serial and model data |
| 0750100022 | SCREW PLUG | Seals hydraulic ports against leakage |
| 4660201008 | SCREW PLUG | High-pressure port plug for oil galleries |
| 0636100117 | SCREW PLUG | Drain or fill plug for transmission sump |
| 0501211384 | VALVE | Hydraulic control valve for clutch modulation |
| 0732042156 | COMPRESSION SPRING | Returns valve spool to neutral position |
| 0768409154 | SCREW PLUG | Secondary sealing plug for auxiliary circuits |
