Overview
The ZF 4616.221.058 LUBRICATION TUBE is a precision-engineered OEM genuine component designed specifically for the WG 65 Series transmission. This critical fluid channel directs pressurized oil to the planetary gear sets and bearings, ensuring consistent lubrication and thermal regulation under heavy-duty loads. Positioned within the transmission’s hydraulic circuit, the tube maintains oil flow integrity between the valve body and rotating assemblies. The SKU 4616.221.058 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or damaged units. When paired with a properly sealed 4616105413: OUTPUT and a secure 4616203017: OUTPUT FLANGE, this lubrication tube prevents premature wear across the entire drivetrain.
Symptoms of Failure
- External oil leaks near the transmission housing: A cracked or corroded lubrication tube often causes visible drips along the WG65 casing, leading to low fluid levels and overheating.
- Intermittent gear slipping under load: Insufficient oil delivery due to a blocked or deformed tube results in delayed clutch engagement and erratic shifting.
- Elevated operating temperatures: When the tube fails to route oil effectively, friction increases within the planetary gears, triggering thermal warnings on the dashboard.
- Whining or grinding noises from the transmission: Starved bearings produce audible distress signals, especially during acceleration or hill climbs.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4616.221.058 |
| Material | Seamless steel tube with anti-corrosion coating |
| Length | 185 mm (estimated) |
| Outer Diameter | 12 mm |
| Wall Thickness | 1.5 mm |
| Weight | 0.12 kg |
| OEM Reference | ZF 4616.221.058 |
| Sealing Interface | Compatible with 0634313118: O-RING and 0634303718: O-RING |
Compatibility
This lubrication tube is engineered for the ZF WG 65 Series transmissions, including models such as WG65, WG120, WG180, and WG200. It is also compatible with select variants of the WG 60 Series and WG 80 Series that share the same hydraulic architecture. For proper installation, ensure the 4616101117: TRANSMISSION HOUSING is clean and free of debris. Secure the tube using a 0636011038: HEXAGON SCREW torqued to factory specifications. Always replace the associated O-rings and filter elements during service to guarantee leak-free operation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from transmission to driveshaft |
| 4616203017 | OUTPUT FLANGE | Connects output shaft to driveline components |
| 4616101117 | TRANSMISSION HOUSING | Encloses and protects internal gear sets |
| 0636011038 | HEXAGON SCREW | Secures lubrication tube to housing |
| 0636016015 | HEXAGON SCREW | Fastens output flange assembly |
| 0631306085 | CYLINDRICAL PIN | Aligns housing and tube during assembly |
| 0634313118 | O-RING | Seals tube-to-housing connection |
| 0732611049 | FILTER INSERT | Removes contaminants from hydraulic fluid |
| 0634303718 | O-RING | Seals output flange interface |
| 0636610082 | STUD | Provides threaded mounting point for covers |
