Overview
The ZF 4661.301.041 NOZZLE is a precision-engineered fluid metering component specifically designed for the WG90 and WG94 series transmissions. This OEM genuine part, identified by SKU 4661.301.041, sits within the hydraulic control circuit, directing lubricating oil to critical gear and bearing surfaces. It is installed directly into the 4661101001: TRANSMISSION HOUSING and works in conjunction with the 4661301007: HOUSING to ensure consistent oil flow under varying pressure conditions. Without this nozzle, the transmission cannot maintain proper lubrication, leading to accelerated wear on internal components.
Symptoms of Failure
- Oil leaks at the nozzle seat: A worn or cracked 4661.301.041 nozzle causes visible oil seepage around the housing interface, often mistaken for a gasket failure.
- Gear slipping under load: When the nozzle fails to meter oil correctly, hydraulic pressure drops, resulting in delayed engagement or slipping during acceleration.
- Overheating transmission fluid: Insufficient lubrication from a clogged or damaged nozzle leads to elevated operating temperatures, triggering warning lights or burnt fluid smell.
- Whining or grinding noises: Inadequate oil delivery to bearings produces audible metallic sounds, particularly in lower gears.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4661.301.041 |
| Material | Hardened steel with corrosion-resistant coating |
| Overall Length | 32.5 mm |
| Outer Diameter | 14.2 mm |
| Orifice Diameter | 1.8 mm |
| Weight | 18 grams |
| OEM Reference | ZF 4661.301.041 |
| Thread Type | M12 x 1.5 |
Compatibility
This nozzle is engineered for the ZF WG90 and WG94 series transmissions. It is also compatible with the following ZF models that share the same hydraulic architecture: WG180, WG200, WG210, and WG250. The part interfaces directly with the 4661301093: TUBE assembly and is secured using the 0631306174: CYLINDRICAL PIN to prevent rotation during operation. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4661101001 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4661301007 | HOUSING | Secondary housing for valve body |
| 4661301093 | TUBE | Oil delivery conduit |
| 0631306174 | CYLINDRICAL PIN | Alignment and retention pin |
| 0769123894 | TYPE PLATE | Identification and rating label |
| 0750100022 | SCREW PLUG | Seals hydraulic passages |
| 0636302602 | SCREW PLUG | Drain or fill port plug |
| 0634100633 | O-RING | Hydraulic seal |
| 4661301029 | NOZZLE | Alternate flow metering nozzle |
| 4661301027 | NOZZLE | Alternate flow metering nozzle |

