Overview
The ZF 0750.147.012 HOSE PIPE is a critical fluid transfer component engineered specifically for the WG 180 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 gear train. As an original ZF component, the 0750.147.012 HOSE PIPE maintains factory-specified flow rates and pressure tolerances, directly influencing shift quality and clutch pack longevity. This hose pipe integrates with the 4644105475: DISCONNECTION assembly to provide a sealed connection point, while its routing path passes adjacent to the 4644101134: TRANSMISSION HOUSING for structural support.
Symptoms of Failure
- External hydraulic oil seepage at hose crimp points – Visible wetness or drip marks near the WG180’s cooler line connections indicate the 0750.147.012 has developed micro-cracks, leading to gradual fluid loss and potential overheating.
- Erratic gear engagement under load – A worn or collapsed hose pipe restricts oil flow, causing delayed clutch application and harsh shifts during acceleration or hill climbing.
- Transmission overheating with warning lamp activation – Reduced fluid circulation from a blocked or kinked 0750.147.012 prevents proper heat exchange, triggering thermal protection modes in the TCM.
- Audible whining or cavitation noise from pump – Air ingestion through a degraded hose pipe creates a high-pitched sound, often accompanied by foamy oil on the dipstick.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0750.147.012 |
| OEM Reference | ZF 0750.147.012 |
| Material | Reinforced synthetic rubber with braided textile layer |
| Inside Diameter | 12.5 mm (0.49 in) |
| Outside Diameter | 19.0 mm (0.75 in) |
| Overall Length | 410 mm (16.1 in) |
| Burst Pressure Rating | 35 bar (507 psi) |
| Weight | 0.18 kg (0.40 lb) |
| Operating Temperature Range | -40°C to +120°C (-40°F to +248°F) |
Compatibility
This 0750.147.012 HOSE PIPE is primarily designed for the ZF WG 180 Series, including WG180, WG180C, and WG180T variants. It also fits select WG200 models produced after 2015, where the cooler circuit layout matches the WG180 architecture. The hose pipe connects directly to the 4642303097: OUTPUT FLANGE return line and is secured using the 0636020211: HEXAGON SCREW at the mounting bracket. For full assembly verification, always cross-reference your transmission’s serial number with the OEM parts catalog.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644105475 | DISCONNECTION | Quick-release coupling for hydraulic line service |
| 4642303097 | OUTPUT FLANGE | Driveshaft connection point at transmission output |
| 0636020211 | HEXAGON SCREW | Fastener for hose pipe bracket and housing |
| 4644101134 | TRANSMISSION HOUSING | Main structural casing for gear and valve assemblies |
| 4644301349 | HOUSING | Secondary cover housing for clutch pack access |
| 0730365125 | TYPE PLATE | Identification tag with transmission model and serial |
| 0631311009 | GROOVED STUD | Alignment pin for housing-to-case mating |
| 0636305019 | SCREW PLUG | Sealing plug for oil gallery test ports |
| 4644301247 | THREADED BUSH | Wear insert for shift fork pivot points |
| 0634303485 | O-RING | Static seal for hose pipe end fittings |
