Overview
The ZF 4657.231.025 OIL DIPSTICK is a precision-engineered fluid level indicator designed specifically for the WG210 series transmission. This genuine OEM part, identified by SKU 4657.231.025, mounts directly into the transmission housing to provide accurate oil level readings during routine maintenance. It ensures proper lubrication by allowing technicians to verify the exact fluid height, preventing both under-filling and over-filling that can lead to premature wear. The dipstick integrates seamlessly with the TRANSMISSION HOUSING and works in conjunction with the HOUS.FRONT SECT to maintain a sealed environment.
Symptoms of Failure
- Transmission fluid seepage around the dipstick tube: A worn or cracked dipstick seal allows oil to escape, leaving visible drips under the vehicle and causing gradual fluid loss.
- Inaccurate oil level readings leading to gear slipping: When the dipstick markings become illegible or the shaft bends, operators misjudge fluid levels, resulting in low hydraulic pressure and delayed gear engagement.
- Contaminated fluid entry through the dipstick port: A broken or missing cap allows dirt and moisture to enter the transmission, accelerating internal component wear and reducing shift quality.
- Difficulty inserting or removing the dipstick: Physical distortion of the shaft or handle makes routine checks frustrating and can indicate misalignment with the HOUSING REAR PART.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4657.231.025 |
| Material | Steel with corrosion-resistant coating |
| Overall Length | Approx. 320 mm |
| Handle Diameter | 25 mm |
| Weight | 0.12 kg |
| Seal Type | Integrated O-ring |
| OEM Reference | ZF 4657.231.025 |
Compatibility
This dipstick is engineered for the ZF WG210 series transmissions. It is also compatible with closely related models including WG180, WG200, and WG211, where the same dipstick tube geometry is used. For proper installation, ensure the CYLINDRICAL PIN aligns correctly with the housing bore to prevent cross-threading.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101030 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201028 | HOUS.FRONT SECT | Forward section of the transmission housing |
| 4657201021 | HOUSING REAR PART | Rear section of the transmission housing |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing housing sections |
| 4656301148 | FIXING PLATE | Mounting bracket for component retention |
| 4657301034 | SCREEN SHEET | Filter mesh for oil debris removal |
| 4657301035 | SCREEN SHEET | Secondary filter mesh for fine particles |
| 0636100803 | CAP SCREW | Alternate fastener for housing joints |
| 0631311009 | GROOVED STUD | Threaded stud for component attachment |
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