Overview
The ZF 4642.131.006 FILLER NOZZLE is a precision-engineered fluid delivery component designed for the WG 150 transmission series. This OEM genuine part controls the precise flow of transmission oil into the hydraulic circuit, ensuring consistent lubrication and cooling during high-torque operations. Located at the upper valve body interface, the nozzle meters fluid volume to maintain optimal clutch pack engagement pressure. The SKU 4642.131.006 is manufactured to ZF’s exacting tolerances, preventing cavitation and thermal degradation in heavy-duty industrial applications. When paired with a robust TRANSMISSION HOUSING, this filler nozzle ensures seamless oil distribution across all gear stages.
Symptoms of Failure
- External oil seepage around the filler nozzle bore: A worn 4642.131.006 nozzle often causes visible drips or wet spots on the transmission housing, particularly after extended operation under load.
- Erratic gear engagement or delayed shifting: Insufficient oil metering leads to pressure fluctuations, causing the transmission to hesitate or slip when transitioning between forward and reverse gears.
- Overheating in the WG150 sump area: A clogged or deformed nozzle restricts oil flow, resulting in elevated operating temperatures that trigger thermal warning systems.
- Whining or grinding noises during acceleration: Inadequate lubrication from a failing nozzle accelerates bearing wear, producing audible metallic sounds from the transmission casing.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4642.131.006 |
| Material | Hardened steel with zinc-nickel plating |
| Overall Length | 48.5 mm |
| Outer Diameter | 22.0 mm |
| Orifice Diameter | 4.2 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 4642.131.006 |
| Thread Type | M18 x 1.5 |
Compatibility
This filler nozzle is primarily designed for the ZF WG 150 series, but its metering characteristics also suit the WG 180 and WG 200 models when used with the correct TRANSMISSION HOUSING. The 4642.131.006 is compatible with all WG150 variants produced after 2012, including the WG150-6 and WG150-8 configurations. For proper identification, always cross-reference the TYPE PLATE affixed to your transmission. The nozzle also interfaces with the GROOVED STUD that secures the valve body assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101047 | TRANSMISSION HOUSING | Encloses gear train and oil passages |
| 4642301207 | TRANSMISSION HOUSING | Alternate housing for WG150 variants |
| 0730365067 | TYPE PLATE | Identification tag for model verification |
| 0631311009 | GROOVED STUD | Secures valve body to housing |
| 4642301168 | SCREEN SHEET | Filters debris from oil flow |
| 4642301169 | SCREEN SHEET | Fine mesh filter for high-pressure circuits |
| 0636100621 | HEXAGON SCREW | Fastener for nozzle mounting flange |
| 4642301186 | SCREEN SHEET | Secondary filtration element |
| 4644106300 | SHIFT SYSTEM | Controls gear selection hydraulics |
| 4644306500 | COVER PLATE | Seals nozzle access port |
