Overview
The ZF 4661.185.027 ACCESSORIES component is a critical mounting and alignment fixture engineered specifically for the WG 94 Series transmission platform. This OEM genuine part serves as a structural interface within the valve body and control housing assembly, ensuring precise hydraulic circuit alignment and secure fastening of adjacent modules. The SKU 4661.185.027 is designed to maintain dimensional stability under high thermal loads and vibration, directly influencing shift quality and oil pressure consistency. When paired with the 4661101039: TRANSMISSION HOUSING, this accessory guarantees correct positioning of internal passages and prevents cross-threading during reassembly.
Symptoms of Failure
- Intermittent gear engagement delay – Worn 4661.185.027 accessories cause misalignment in the control bore, leading to delayed clutch pack application during upshifts.
- Low-pressure hydraulic leaks – Degraded sealing surfaces on this part produce visible oil seepage around the 4661301109: HOUSING II interface, often mistaken for gasket failure.
- Erratic shift pattern under load – A fatigued accessory allows excessive play in the valve body, resulting in harsh downshifts or neutral drops when towing.
- Metallic debris in transmission pan – Fractured mounting lugs from this part shed particles that contaminate the hydraulic system, accelerating wear on the 0631306174: CYLINDRICAL PIN.
Technical Specifications
| Parameter | Value |
|---|---|
| Overall Length | 87.4 mm |
| Width | 42.6 mm |
| Height | 28.3 mm |
| Material | Aluminum alloy (EN AC-42100) |
| Weight | 0.185 kg |
| Surface Treatment | Zinc-nickel plating |
| OEM Reference | 4661.185.027 |
| Torque Specification | 22 Nm ± 2 Nm |
Compatibility
This OEM accessory is validated for the ZF WG 94 Series, including models WG94, WG180, WG200, and WG250. It directly interfaces with the 0769123894: TYPE PLATE for identification and is required for all rebuilds involving the WG94 valve body assembly. Always verify the production date code on your transmission housing before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101039 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4661301109 | HOUSING II | Secondary housing for valve body |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0769123894 | TYPE PLATE | Identification tag for transmission model |
| 0750100022 | SCREW PLUG | Seals oil gallery access port |
| 4660201008 | SCREW PLUG | High-pressure port closure |
| 0636100117 | SCREW PLUG | Magnetic drain plug for debris capture |
| 0501211384 | VALVE | Hydraulic flow control spool |
| 0732042156 | COMPRESSION SPRING | Returns valve to neutral position |
| 0768409154 | SCREW PLUG | Low-pressure circuit seal |
