Overview
The ZF 0501.211.400 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 clutch pack assembly, ensuring precise lubrication and cooling within the transmission sump. As a direct replacement for the factory-installed line, the SKU 0501.211.400 maintains the exact internal diameter and bend radius required to prevent flow restriction. When integrated with the 4646101112: TRANSMISSION HOUSING, this hose pipe forms a sealed circuit that supports consistent shift pressure across all gear ranges.
Symptoms of Failure
- Hydraulic fluid seepage at the pipe-to-housing junction: A worn or cracked 0501.211.400 hose pipe allows ATF to escape, leaving visible puddles under the bell housing and causing gradual fluid loss.
- Erratic gear engagement or delayed shifts: When this pipe develops internal collapse or blockage, the transmission experiences intermittent pressure drops, leading to harsh or slipping shifts during acceleration.
- Overheating transmission sump: A compromised hose pipe restricts oil flow to the cooler circuit, causing the transmission to run hotter than normal and triggering warning lights on the dash.
- Whining or humming noise from the pump area: Air ingestion through a split in the hose pipe creates cavitation noise, often mistaken for pump failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0501.211.400 |
| Material | Reinforced synthetic rubber with textile braid |
| Overall Length | 410 mm (16.1 in) |
| Inner Diameter | 12.7 mm (0.5 in) |
| Wall Thickness | 4.5 mm (0.177 in) |
| Weight | 0.18 kg (0.4 lbs) |
| OEM Reference | ZF 0501.211.400 |
| Burst Pressure | 25 bar (362 psi) |
Compatibility
This genuine ZF hose pipe is designed for the WG260 and WG310 transmission families, which are commonly found in medium-duty trucks, buses, and off-highway equipment. The part also fits select WG180 and WG200 models where the hydraulic circuit layout matches the 410 mm routing path. Always verify the hose routing against the 4646301316: HOUSING and 4646301283: COVER to confirm proper alignment. For installations requiring additional fastening, use the 0636015304: HEXAGON SCREW to secure the pipe bracket to the transmission casing.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101112 | TRANSMISSION HOUSING | Encloses the gear train and supports all hydraulic components |
| 4646301316 | HOUSING | Provides mounting surface for the hose pipe and valve body |
| 4646301283 | COVER | Seals the hydraulic channel above the pipe assembly |
| 0636015304 | HEXAGON SCREW | Secures the pipe bracket to the housing |
| 0636101828 | CAP SCREW | Fastens the cover plate over the pipe channel |
| 4646201022 | COVER SHEET | Protects the pipe from debris and thermal radiation |
| 4646301295 | SCREEN SHEET | Filters particulate matter from the oil entering the pipe |
| 0730365190 | TYPE PLATE | Identifies transmission model and serial number |
| 0631311009 | GROOVED STUD | Locates the pipe bracket during assembly |
| 0636101193 | CAP SCREW | Anchors the screen sheet to the housing |
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