Overview
The ZF 4661.185.090 ACCESSORIES component is a critical mounting and alignment fixture engineered specifically for the WG 94 Series transmission platform. This OEM genuine part ensures precise positioning of internal assemblies within the gearbox housing, directly influencing shift quality and torque transfer stability. The SKU 4661.185.090 interfaces with the main casing and supports the valve body and clutch pack alignment. For full assembly integrity, this accessory works in concert with the 4661101046: HOUSING and the 4661301125: HOUSING II, which provide the structural envelope for the entire gear set.
Symptoms of Failure
- Intermittent gear engagement hesitation – When the 4661.185.090 accessory loses dimensional integrity, the valve body can shift, causing delayed or rough engagement between forward and reverse gears.
- Oil seepage at the housing interface – A worn or cracked accessory creates micro-gaps, leading to transmission fluid weeping around the 0631306174: CYLINDRICAL PIN mounting points.
- Unusual metallic rattling during low-speed operation – Loose fasteners or degraded material in this part allow internal components to vibrate against the 0769123894: TYPE PLATE, producing audible noise under load.
- Erratic shift pressure fluctuations – Misalignment of the accessory disrupts hydraulic circuit sealing, causing pressure drops that trigger fault codes in electronic controls.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4661.185.090 |
| Material | Die-cast aluminum alloy (AlSi9Cu3) |
| Weight | 0.85 kg (1.87 lbs) |
| Overall Dimensions | 210 mm x 95 mm x 45 mm |
| OEM Reference | ZF 4661.185.090 |
| Surface Finish | Black anodized / phosphate coated |
| Bolt Torque Spec | 25 Nm ± 2 Nm |
Compatibility
This accessory is designed for the ZF WG 94 Series, including models such as WG180, WG200, WG210, and WG240. It is also compatible with select variants of the WG150 and WG160 where the housing interface matches the 4661.185.090 mounting pattern. Always verify the 0769123894: TYPE PLATE identification on your transmission to confirm fitment before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101046 | HOUSING | Main transmission casing structure |
| 4661301125 | HOUSING II | Secondary housing for clutch assembly |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0769123894 | TYPE PLATE | Identification plate with model data |
| 0750100022 | SCREW PLUG | Seals oil passages in valve body |
| 4660201008 | SCREW PLUG | High-pressure port closure |
| 0636100117 | SCREW PLUG | Low-pressure drain plug |
| 0501211384 | VALVE | Hydraulic flow control spool |
| 0732042156 | COMPRESSION SPRING | Returns valve to neutral position |
| 0768409154 | SCREW PLUG | Threaded sealing cap for sensor ports |
