Overview
The ZF 0501.226.258 HOSE PIPE is a critical fluid transfer component engineered specifically for the WG 310 Series transmission. This OEM genuine part channels pressurized hydraulic oil between the valve body and the clutch pack assembly, ensuring precise shift timing and lubrication within the transmission housing. The SKU 0501.226.258 is designed to withstand high thermal loads and constant vibration, maintaining a leak-free seal over extended service intervals. When installed alongside a TRANSMISSION HOUSING (4646101195), this hose pipe guarantees uninterrupted oil flow to critical rotating assemblies.
Symptoms of Failure
- Hydraulic oil seepage near the transmission bell housing: A cracked or swollen 0501.226.258 hose pipe will cause visible oil drips, often mistaken for a main seal failure. This is a common long-tail search query for “ZF WG310 oil leak at hose pipe connection.”
- Delayed or harsh gear engagement: When the hose pipe loses internal integrity, hydraulic pressure drops, leading to “ZF transmission slipping in forward gears” or “WG310 delayed reverse engagement.”
- Overheating transmission fluid: Restricted flow through a collapsed hose pipe causes fluid aeration and thermal degradation, triggering “transmission temperature warning light on ZF WG310.”
- Audible whining or cavitation noise: Air ingestion through a cracked hose pipe produces a high-pitched sound, often searched as “ZF transmission whining noise when accelerating.”
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0501.226.258 |
| Material | Reinforced synthetic rubber with braided polyester |
| Inner Diameter | 12.7 mm (0.5 in) |
| Outer Diameter | 19.0 mm (0.75 in) |
| Length | 410 mm (16.1 in) |
| Weight | 0.18 kg (0.4 lbs) |
| OEM Reference | ZF 0501.226.258 |
| Max Operating Pressure | 18 bar (261 psi) |
| Temperature Range | -40°C to +150°C |
Compatibility
This hose pipe is primarily designed for the ZF WG 310 Series, but it also fits select models in the WG180, WG200, and WG250 families when used with the correct HOUSING (4646301367). Always verify the routing path against your transmission’s O-RING (0634100318) and COVER (4646301368) to ensure proper sealing. For WG310 applications, this part is a direct replacement for OEM units without modification.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101195 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4646301367 | HOUSING | Secondary housing for valve body assembly |
| 0634100318 | O-RING | Seals hose pipe to housing connection |
| 4646301368 | COVER | Protective cover over hydraulic passages |
| 4475280016 | SCREW PLUG | Seals unused hydraulic ports |
| 0634303144 | O-RING | Seals screw plug to housing |
| 0731611135 | ORIFICE | Restricts fluid flow for pressure regulation |
| 4475280208 | SCREW PLUG | Secondary port sealing plug |
| 0634316523 | O-RING | Seals secondary plug |
| 0636100801 | CAP SCREW | Fastens cover to housing |
