Overview
The ZF 0750.147.142 HOSE PIPE is a critical fluid transfer component engineered specifically for the WG 200 Series transmission. 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. As a precision-formed conduit, the 0750.147.142 maintains the exact flow dynamics required for smooth clutch engagement and torque converter operation. This hose pipe is frequently replaced alongside the 4644101216: TRANSMISSION HOUSING or the 4644301223: TRANSMISSION HOUSING during a full overhaul, as both housings interface directly with this fluid line. Always verify the 0730365067: TYPE PLATE on your unit to confirm compatibility before installation.
Symptoms of Failure
- Hydraulic oil seepage at the pipe crimp: When the 0750.147.142 hose pipe degrades, fluid often weeps from the crimped connection points, leaving visible oil residue on the transmission housing.
- Erratic gear engagement under load: A compromised hose pipe reduces line pressure, causing delayed or harsh shifts—especially noticeable when towing or climbing grades.
- Overheating transmission fluid: Restricted flow through a collapsed or kinked hose pipe starves the cooler, leading to elevated sump temperatures and potential clutch slip.
- Audible whine from the pump: Air ingestion through a cracked hose pipe creates cavitation noise, often misdiagnosed as a failing pump.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0750.147.142 |
| OEM Reference | ZF 0750.147.142 |
| Material | Reinforced synthetic rubber with textile braid |
| Inside Diameter | 12.7 mm (0.5 in) |
| Overall Length | 420 mm (16.5 in) |
| Working Pressure | 15 bar (217 psi) max |
| Temperature Range | -40°C to +120°C |
| Weight | 0.18 kg (0.4 lb) |
| Fitting Type | Swivel 90° banjo with O-ring seal |
Compatibility
This hose pipe is primarily designed for the ZF WG 200 Series, including models WG200, WG210, and WG211. It also fits select WG180 variants that share the same cooler circuit architecture. The 0750.147.142 is not interchangeable with earlier WG120 or WG150 units due to different banjo bolt spacing. For proper installation, ensure the 0631311009: GROOVED STUD is torqued to specification, as this stud secures the pipe bracket to the housing. Always replace the 0634306525: O-RING at both ends of the hose pipe to prevent leaks.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101216 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301223 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 0730365067 | TYPE PLATE | Identification tag for transmission model |
| 0631311009 | GROOVED STUD | Locating pin for hose pipe bracket |
| 4644303060 | COVER PLATE | Seals valve body access port |
| 4644303061 | COVER PLATE | Alternate cover plate for cooler circuit |
| 0634306525 | O-RING | Seals hose pipe connection ends |
| 0636305026 | SCREW PLUG | Closes unused hydraulic ports |
| 4644301279 | SCREEN SHEET | Filter mesh for oil pickup |
| 4644301088 | SEALING CAP | Protects open ports during service |
