Overview
The ZF 0501.212.310 HOSE PIPE is a critical fluid transfer component engineered specifically for the WG 310 Series transmission. This OEM genuine part channels hydraulic oil between the valve body and the cooler circuit, ensuring consistent lubrication and thermal regulation under high-torque conditions. As a direct replacement for the original assembly, the SKU 0501.212.310 maintains factory-specified flow rates and pressure tolerances. When paired with a properly sealed TRANSMISSION HOUSING, this hose pipe prevents cross-contamination of fluid circuits and supports the overall durability of the gear train.
Symptoms of Failure
- External hydraulic oil seepage – Cracks or pinhole leaks in the hose pipe wall cause visible fluid drips near the transmission bell housing or cooler line connections.
- Erratic gear engagement under load – A compromised hose pipe reduces line pressure, leading to delayed or harsh shifts, particularly in WG310 units operating at maximum GVW.
- Overheating transmission fluid – Restricted flow through a collapsed or internally blocked hose pipe prevents proper oil cooling, triggering thermal warning lights on the dashboard.
- Audible whining from the pump – Air ingestion through a deteriorated hose pipe creates cavitation noise, often mistaken for pump failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0501.212.310 |
| Material | Reinforced synthetic rubber with textile braid |
| Inner Diameter | 12.7 mm (0.5 in) |
| Outer Diameter | 19.0 mm (0.75 in) |
| Overall Length | 310 mm (12.2 in) |
| Weight | 0.18 kg (0.4 lbs) |
| Working Pressure | 12 bar (174 psi) |
| Temperature Range | -40°C to +120°C |
| OEM Reference | ZF 0501.212.310 |
Compatibility
This hose pipe is dimensionally and hydraulically validated for the ZF WG 310 Series. It also serves as a service replacement for earlier WG180, WG200, and WG250 transmissions that share the same cooler circuit architecture. Always verify the routing path against your existing assembly; the hose pipe connects directly to the HEXAGON SCREW ports on the valve body and is secured by the CAP SCREW at the cooler adapter. For complete sealing, the COVER SHEET must be installed without distortion to prevent stress on the hose fitting.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101107 | TRANSMISSION HOUSING | Encloses gear sets and supports bearing alignment |
| 0636015304 | HEXAGON SCREW | Secures valve body to housing |
| 0636101828 | CAP SCREW | Fastens cooler line adapter |
| 4646301102 | COVER SHEET | Protects internal passages from debris |
| 4646301285 | COVER SHEET | Alternate cover for deep-sump housings |
| 0631311009 | GROOVED STUD | Locates cover sheet during assembly |
| 0636101193 | CAP SCREW | M6 fastener for cooler bracket |
| 0636010179 | HEXAGON SCREW | M8 x 20 mm housing bolt |
| 0636010172 | HEXAGON SCREW | M8 x 16 mm housing bolt |
| 0636101153 | CAP SCREW | M10 x 25 mm adapter fastener |
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