Overview
The ZF 0501.223.103 HOSE PIPE is a critical fluid transfer component engineered specifically for the WG260 and WG310 transmission series. This OEM genuine part channels pressurized hydraulic oil between the valve body and the cooler circuit, ensuring consistent lubrication and thermal regulation within the gearbox assembly. The SKU 0501.223.103 designates a reinforced hose pipe that withstands high operating temperatures and vibration loads. When installed alongside the 4646101167: TRANSMISSION HOUSING, this hose pipe maintains the integrity of the hydraulic loop, preventing pressure drops that could compromise shift quality.
Symptoms of Failure
- External hydraulic oil leaks near the transmission cooler lines – Cracks or abrasions in the hose pipe cause visible fluid seepage, often mistaken for a failing gasket.
- Erratic gear engagement or delayed shifting – A compromised hose pipe reduces line pressure, leading to soft shifts or hesitation when moving from neutral to drive.
- Overheating transmission fluid – Restricted flow through a collapsed or kinked hose pipe prevents proper cooling, triggering thermal warnings on the dashboard.
- Audible whining or cavitation noise – Air ingestion through a damaged hose pipe creates a high-pitched sound during acceleration, indicating low fluid aeration.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.223.103 |
| Material | Reinforced synthetic rubber with braided textile layer |
| Inner Diameter | 12 mm (0.47 in) |
| Outer Diameter | 22 mm (0.87 in) |
| Length (overall) | 410 mm (16.1 in) |
| Weight | 0.18 kg (0.40 lbs) |
| OEM Reference | ZF 0501.223.103 |
| Operating Pressure | Up to 15 bar (217 psi) |
| Temperature Range | -40°C to +120°C (-40°F to +248°F) |
Compatibility
This hose pipe is primarily designed for the ZF WG260 and WG310 series transmissions, commonly found in medium-duty trucks and construction equipment. It also fits select variants of the WG180 and WG200 gearboxes where the hydraulic cooler circuit uses identical banjo fittings. Always verify the routing path against the 4646301317: HOUSING to ensure proper clearance. For secure mounting, use the 0636115293: 螺栓 and 0636101153: CAP SCREW to fasten the hose clamps to the transmission casing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101167 | TRANSMISSION HOUSING | Encloses gear train and supports hydraulic circuits |
| 4646301317 | HOUSING | Secondary casing for valve body and oil channels |
| 0636115293 | 螺栓 | Fastener for hose pipe brackets |
| 0636101153 | CAP SCREW | Secures housing cover plates |
| 4646201003 | POT | Oil sump or reservoir for fluid collection |
| 0736300232 | 螺栓 | Mounting bolt for transmission components |
| 4475280208 | SCREW PLUG | Seals inspection ports on the housing |
| 0634316523 | O-RING | Seals hose pipe connections to prevent leaks |
| 4646108013 | COUNTERSHAFT | Transfers torque between gear sets |
| 0634313070 | O-RING | Secondary seal for cooler line fittings |
