Overview
The ZF 0501.232.665 FILTER COMPLETE is a critical hydraulic filtration component engineered specifically for the WG90, WG92, WG94, and WG98 series transmissions. This OEM genuine part sits within the transmission’s lubrication and cooling circuit, positioned between the suction tube and the pump inlet. Its primary function is to remove contaminants from the transmission fluid, ensuring clean oil reaches all internal components. The SKU 0501.232.665 is a direct replacement for the factory-installed filter, maintaining the precise flow rate and micron rating required for optimal gearbox performance. When installed alongside a 4660101011: TRANSMISSION HOUSING, this filter ensures that the housing’s internal passages remain free of debris, extending the life of the entire assembly.
Symptoms of Failure
- Erratic gear engagement or slipping under load: A clogged 0501.232.665 filter restricts oil flow, causing delayed or harsh shifting in WG series transmissions. This is a common long-tail search query for “ZF transmission slipping when hot.”
- Visible oil leaks around the filter housing: Worn seals on the filter assembly can cause fluid to weep from the connection point, often mistaken for a 4660301018: HOUSING gasket failure. Search for “ZF WG92 oil leak near filter.”
- Overheating transmission fluid: Restricted filtration forces the pump to work harder, generating excess heat. This symptom often leads technicians to search “ZF WG94 transmission overheating causes.”
- Whining noise from the pump area: Cavitation due to a blocked filter creates a distinct high-pitched sound, indicating immediate replacement is needed.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 0501.232.665 |
| Filtration Micron Rating | 25 microns (nominal) |
| Overall Length | 185 mm |
| Outer Diameter | 95 mm |
| Seal Material | Nitrile rubber (NBR) |
| Filter Media | Cellulose/synthetic blend |
| Dry Weight | 0.45 kg |
| Burst Pressure Rating | 10 bar (145 psi) |
| Operating Temperature Range | -20°C to +120°C |
| Thread Size (Inlet) | M22 x 1.5 |
Compatibility
This filter is designed for ZF’s WG series powershift transmissions, specifically the WG90, WG92, WG94, and WG98 models. It is also compatible with the WG180 and WG200 variants that share the same hydraulic circuit architecture. The 0501.232.665 replaces older filter designs in these gearboxes. For proper installation, ensure the 0631306174: CYLINDRICAL PIN is correctly aligned to prevent the filter from rotating during operation. Always verify the 0769123894: TYPE PLATE on your transmission to confirm the exact series before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101011 | TRANSMISSION HOUSING | Encloses gear train and oil passages |
| 4660301018 | HOUSING | Secondary housing for clutch pack assembly |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for filter mounting |
| 0769123894 | TYPE PLATE | Identification plate with transmission specs |
| 4660221012 | SUCTION TUBE | Draws oil from pan to filter inlet |
| 0634100317 | O-RING | Seals filter-to-housing connection |
| 0636103273 | CAP SCREW | Fastens filter cover to housing |
| 0750100022 | SCREW PLUG | Closes unused port in filter circuit |
| 4660101804 | TRANSMISSION HOUSING | Alternate housing variant for WG94 |
| 4660301008 | HOUSING | Lower housing section for oil sump |
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