Overview
The ZF 0501.223.087 HOSE PIPE is a critical fluid transfer component engineered specifically for the WG 260 and WG 310 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 transmission assembly. The SKU 0501.223.087 is designed to withstand high-temperature oil exposure and continuous vibration, maintaining a leak-free seal under demanding industrial operating conditions. When installed alongside a TRANSMISSION HOUSING, this hose pipe completes the essential hydraulic loop that governs clutch engagement and torque converter cooling.
Symptoms of Failure
- Hydraulic fluid seepage at connection points – Cracked or swollen hose pipe material often leads to visible oil drips near the transmission housing, particularly during cold starts or after extended operation.
- Erratic gear engagement or delayed shifting – A compromised hose pipe reduces line pressure, causing sluggish shifts or unexpected gear slippage in WG260 and WG310 units.
- Overheating transmission fluid – Restricted flow through a collapsed or internally damaged hose pipe prevents adequate cooling, triggering thermal warnings or fluid degradation.
- Audible whining from the pump circuit – Air ingestion through a cracked hose pipe creates cavitation noise, often accompanied by foamy fluid on the dipstick.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.223.087 |
| Material | Reinforced synthetic rubber with textile braid |
| Inner Diameter | 12 mm |
| Outer Diameter | 19 mm |
| Overall Length | 410 mm |
| Operating Pressure | 18 bar (max) |
| Temperature Range | -40°C to +135°C |
| OEM Reference | ZF 0501.223.087 |
| Weight | 0.18 kg |
Compatibility
This hose pipe is factory-specified for the ZF WG 260 and WG 310 series transmissions, commonly found in heavy-duty trucks, construction loaders, and agricultural tractors. It also retrofits to WG180 and WG200 models when used with the appropriate HEXAGON SCREW and CAP SCREW kits. For proper sealing, always pair this hose with a COVER SHEET to prevent debris ingress at the connection ports. Verify your transmission serial number against ZG/WSG application charts before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101131 | TRANSMISSION HOUSING | Encloses gear sets and valve body |
| 0636015304 | HEXAGON SCREW | Secures hose pipe bracket to housing |
| 0636101828 | CAP SCREW | Fastens cooler line adapter plate |
| 4646301102 | COVER SHEET | Protects hose connection from contamination |
| 4646301285 | COVER SHEET | Alternate sealing plate for WG310 |
| 0631311009 | GROOVED STUD | Alignment dowel for hose routing |
| 0636101193 | CAP SCREW | M8 fastener for cooler bracket |
| 0636010179 | HEXAGON SCREW | M10 x 30 mounting bolt |
| 0636010172 | HEXAGON SCREW | M10 x 25 short bolt |
| 4475280215 | SCREW PLUG | Seals unused test port on housing |
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