Overview
The ZF 4651.131.006 OIL DIPSTICK is a precision-engineered fluid level indicator specifically designed for the WG 100 Series transmission. This OEM genuine part sits directly in the transmission housing, providing operators with a reliable method to verify oil levels and monitor fluid condition without disassembly. The dipstick features a clear, graduated marking system that allows for accurate readings even in low-light conditions. As an original ZF component, the SKU 4651.131.006 ensures exact fitment and thermal stability, preventing false readings caused by expansion or warping. This part is critical for maintaining proper lubrication pressure and heat dissipation within the gearbox.
Symptoms of Failure
- Oil leaks around the dipstick tube: A worn or cracked dipstick seal allows transmission fluid to escape, leading to low oil levels and potential gear slipping. If you notice puddles under the vehicle near the bell housing, inspect the 4651.131.006 dipstick immediately.
- Inaccurate fluid level readings: When the dipstick becomes corroded or the markings fade, operators may overfill or underfill the transmission. This causes erratic shifting and overheating, especially during heavy loads.
- Contaminated oil entering the transmission: A damaged dipstick cap or missing O-ring allows dirt and moisture to bypass the seal, accelerating internal wear. This often presents as dark, gritty fluid on the dipstick itself.
- Difficulty inserting or removing the dipstick: Bent or deformed dipstick tubes create friction, making routine checks impossible. This symptom frequently accompanies a failing TRANSMISSION HOUSING that has shifted out of alignment.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4651.131.006 |
| Overall Length | 320 mm (12.6 in) |
| Dipstick Rod Diameter | 6 mm |
| Handle Material | High-temp nylon (PA66) |
| Rod Material | 304 Stainless Steel |
| Weight | 45 g (0.1 lb) |
| OEM Reference | ZF 4651.131.006 |
| Seal Type | Integrated O-ring (compatible with O-RING 0634303928) |
Compatibility
This dipstick is engineered for the ZF WG 100 Series, but its design also supports select models in the WG180 and WG200 families. It is a direct replacement for transmissions using the HOUSING 4651301029 and the HOUSING 4651301024. Always verify your transmission serial number before ordering. The part is not compatible with older WG80 or WG120 variants without adapter kits.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4651301029 | HOUSING | Secondary housing for valve body |
| 0634303928 | O-RING | Seals dipstick tube to housing |
| 4651301024 | HOUSING | Rear housing for output shaft |
| 4651203002 | SCREEN SHEET | Filters debris from oil pump intake |
| 4651303005 | SCREEN SHEET | Fine mesh filter for valve body |
| 0636101032 | CAP SCREW | Secures housing covers |
| 0630361028 | SEALING CAP | Closes unused ports |
| 4475280060 | SCREW PLUG | Drain or fill plug |
| 0634303312 | O-RING | Seals screw plug |
