Overview
The ZF 4651.131.003 OIL DIPSTICK is a precision-engineered measurement tool designed exclusively for the WG 100 series transmission. This genuine OEM part, identified by SKU 4651.131.003, sits securely within the transmission housing to provide accurate fluid level readings, ensuring optimal lubrication and hydraulic pressure. Proper oil level verification is critical for the longevity of the gearbox, and this dipstick offers a reliable, corrosion-resistant interface for routine maintenance checks. When paired with a robust TRANSMISSION HOUSING, it forms a sealed system that prevents contamination while allowing quick access for fluid inspection.
Symptoms of Failure
- Oil Leaks Around the Dipstick Tube: A worn or cracked dipstick seal can cause transmission fluid to seep out, leading to low fluid levels and potential overheating.
- Inaccurate Fluid Level Readings: If the dipstick markings fade or the shaft bends, you may overfill or underfill the transmission, causing gear slipping or harsh shifting.
- Contaminated Fluid Entry: A broken dipstick cap or missing O-ring allows dirt and moisture into the system, accelerating wear on internal components like the HOUSING assembly.
- Difficult Removal or Insertion: Warpage or corrosion on the dipstick handle can make it hard to seat properly, risking damage to the O-RING seal.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4651.131.003 |
| Material | Chrome-plated steel with rubber O-ring |
| Overall Length | Approx. 320 mm |
| Weight | 0.12 kg |
| OEM Reference | ZF 4651.131.003 |
| Seal Type | Integrated O-ring (compatible with 0634303928) |
Compatibility
This dipstick is primarily engineered for the ZF WG 100 series transmission, but it also fits select models in the WG 180, WG 200, and WG 210 families where the same dipstick tube geometry is used. Always verify the housing bore diameter against your existing HOUSING to ensure a proper seal. For transmissions requiring a screen filter, consider pairing this dipstick with a SCREEN SHEET or SCREEN SHEET to maintain fluid cleanliness.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4651301029 | HOUSING | Secondary housing for valve body or clutch pack |
| 0634303928 | O-RING | Seals dipstick tube to prevent leaks |
| 4651301024 | HOUSING | Alternative housing variant for WG series |
| 4651203002 | SCREEN SHEET | Filter screen for oil pump intake |
| 4651303005 | SCREEN SHEET | Fine mesh screen for hydraulic circuit |
| 0636101032 | CAP SCREW | Fastener for housing or cover plates |
| 0630361028 | SEALING CAP | Protects unused ports from debris |
| 4475280060 | SCREW PLUG | Threaded plug for drain or fill holes |
| 0634303312 | O-RING | Seal for screw plug or cap screw |
