Overview
The ZF 4642.131.005 FILLER NOZZLE is a precision-engineered fluid delivery component designed specifically for the WG150 series transmission. This OEM genuine part serves as the primary interface for introducing transmission fluid into the hydraulic system, ensuring a controlled and debris-free fill process. Positioned directly on the transmission housing assembly, the filler nozzle works in concert with the TRANSMISSION HOUSING and the TRANSMISSION HOUSING to maintain proper lubrication flow. The SKU 4642.131.005 is engineered to exact ZF tolerances, preventing contamination ingress during service intervals and supporting long-term drivetrain reliability.
Symptoms of Failure
- Transmission fluid leaks around the fill port – A worn or cracked filler nozzle often causes visible oil seepage, especially during thermal expansion cycles. This is a common search query for “ZF WG150 oil leak at filler neck.”
- Gear slipping under load – Insufficient fluid delivery due to a damaged nozzle can lead to low hydraulic pressure, resulting in delayed engagement or slipping in forward and reverse gears.
- Difficulty filling transmission fluid – A deformed or clogged nozzle creates backpressure, making it hard to add fluid without spillage. This is frequently searched as “hard to fill ZF transmission fluid.”
- Contaminated fluid from debris entry – A compromised seal allows dirt and moisture into the system, accelerating wear on internal components like the GROOVED STUD and valve bodies.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4642.131.005 |
| Material | Die-cast aluminum with corrosion-resistant coating |
| Overall Length | 95 mm (3.74 in) |
| Inlet Diameter | 22 mm (0.87 in) |
| Weight | 0.12 kg (0.26 lbs) |
| OEM Reference | ZF 4642.131.005 |
| Seal Type | Integrated O-ring (nitrile rubber) |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This filler nozzle is primarily designed for the ZF WG150 series transmission, but it also fits select models in the WG180 and WG200 families due to shared housing architecture. It is a direct replacement for units equipped with the TYPE PLATE indicating WG150 variants. Always verify your transmission’s serial number against the OEM part list before installation. The nozzle interfaces seamlessly with the GROOVED STUD mounting points and is compatible with both standard and high-capacity oil pans in the WG series.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for valve body assembly |
| 0730365125 | TYPE PLATE | Identification plate with model and serial number |
| 0631311009 | GROOVED STUD | Fastener for securing housing components |
| 4642301168 | SCREEN SHEET | Fine mesh filter for fluid intake |
| 4642301169 | SCREEN SHEET | Secondary filter screen for hydraulic circuit |
| 0636100621 | HEXAGON SCREW | M8 hex bolt for housing attachment |
| 4642301186 | SCREEN SHEET | High-flow filter for heavy-duty applications |
| 4644106300 | SHIFT SYSTEM | Mechanical shift linkage assembly |
| 4644306500 | COVER PLATE | Protective cover for shift mechanism |
