Overview
The ZF 4661.185.071 ACCESSORIES component is a critical auxiliary element engineered specifically for the WG 94 Series transmission family. This OEM genuine part functions as a mounting or alignment fixture within the valve body or hydraulic control assembly, ensuring precise fluid routing and mechanical stability during high-torque operations. The SKU 4661.185.071 is manufactured to ZF’s exacting tolerances, making it indispensable for maintaining the transmission’s shift quality and pressure regulation. When paired with the 4661101046: HOUSING and 4661301125: HOUSING II, this accessory forms a sealed, vibration-resistant assembly that protects internal hydraulic circuits from contamination.
Symptoms of Failure
- Erratic shift timing or delayed engagement – A worn 4661.185.071 accessory can cause inconsistent hydraulic pressure, leading to harsh or slipping gear changes, especially under load.
- External oil seepage near the valve body – Degraded sealing surfaces on this part often result in visible fluid leaks around the transmission pan or side cover, a common long-tail search query for “ZF WG94 oil leak fix.”
- Increased transmission noise during acceleration – Loose or fatigued mounting points from a failing accessory produce a distinct rattle or whine, indicating improper alignment of the 0631306174: CYLINDRICAL PIN.
- Intermittent loss of drive in reverse gear – When this part deteriorates, the hydraulic circuit for reverse may fail intermittently, a symptom often searched as “WG94 reverse gear slipping.”
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4661.185.071 |
| Material | High-strength aluminum alloy with corrosion-resistant coating |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions (L x W x H) | 85 mm x 45 mm x 30 mm |
| OEM Reference | ZF 4661.185.071 (Genuine) |
| Operating Temperature Range | -40°C to +120°C |
| Sealing Type | Integrated O-ring groove (O-ring not included) |
Compatibility
This accessory is designed for the ZF WG 94 Series, which includes the WG180, WG200, and WG250 transmission models commonly found in medium-duty trucks, buses, and off-highway equipment. It is also compatible with select WG94 variants used in agricultural machinery. For proper fitment, always verify the transmission serial number and consult the 0769123894: TYPE PLATE to confirm the exact assembly revision. The 4661.185.071 accessory works in concert with the 4661101046: HOUSING and 4661301125: HOUSING II to ensure leak-free operation across all WG94 derivatives.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101046 | HOUSING | Primary enclosure for valve body assembly |
| 4661301125 | HOUSING II | Secondary housing for hydraulic control channels |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise component positioning |
| 0769123894 | TYPE PLATE | Identification plate with transmission model and serial number |
| 0750100022 | SCREW PLUG | Seals hydraulic test ports |
| 4660201008 | SCREW PLUG | High-pressure port sealing plug |
| 0636100117 | SCREW PLUG | Low-pressure drain plug |
| 0501211384 | VALVE | Hydraulic flow control valve |
| 0732042156 | COMPRESSION SPRING | Provides return force for valve spools |
| 0768409154 | SCREW PLUG | Secondary sealing plug for auxiliary circuits |
