Overview
The ZF 0730.062.108 TUBE is a critical hydraulic fluid conduit engineered specifically for the WG 150 series transmission. This OEM genuine part channels pressurized oil between the valve body and the clutch packs, ensuring precise shift timing and lubrication within the planetary gearset. As a direct replacement for the original factory component, SKU 0730.062.108 guarantees exact fitment and material compatibility with the transmission’s internal sealing surfaces. This tube is often replaced during a full overhaul alongside the TRANSMISSION HOUSING (4642101108) to prevent cross-threading and fluid contamination.
Symptoms of Failure
- Hydraulic fluid seepage at the tube-to-housing interface – Visible oil drips or wet spots around the tube connection point, often mistaken for a pan gasket leak.
- Erratic or delayed gear engagement – A worn tube causes pressure loss, leading to soft shifts or hesitation when moving from Neutral to Drive.
- Transmission overheating under load – Insufficient oil flow due to a cracked or deformed tube reduces cooling capacity, triggering thermal warnings.
- Whining or humming noise from the transmission sump – Air entrainment from a loose tube creates cavitation sounds during operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0730.062.108 |
| OEM Reference | ZF 0730.062.108 |
| Material | Seamless drawn steel, zinc-plated |
| Length | 215 mm (8.46 in) |
| Outer Diameter | 12 mm (0.472 in) |
| Wall Thickness | 1.5 mm (0.059 in) |
| Weight | 0.085 kg (0.187 lbs) |
| Sealing Type | O-ring groove at both ends |
| Torque Specification | 18 Nm (13.3 ft-lbs) for retaining nut |
Compatibility
This tube is primarily designed for the ZF WG 150 series, but it also fits the WG 151, WG 152, and WG 153 variants due to shared hydraulic circuit architecture. It is not compatible with the WG 180 or WG 200 series, which use a larger diameter tube (0730.062.110). Always verify the transmission model stamp on the TYPE PLATE (0730365125) before ordering. When installing, ensure the TRANSMISSION HOUSING (4642301208) is clean and free of burrs, and use a new GROOVED STUD (0631311009) to secure the tube bracket.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101108 | TRANSMISSION HOUSING | Main structural casing for gearset and valve body |
| 4642301208 | TRANSMISSION HOUSING | Rear housing section for output shaft support |
| 0730365125 | TYPE PLATE | Identification tag with transmission model and serial number |
| 0631311009 | GROOVED STUD | Threaded fastener for tube bracket alignment |
| 4642301168 | SCREEN SHEET | Fine mesh filter for oil pump intake |
| 4642301169 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100621 | HEXAGON SCREW | M8 bolt for housing flange connection |
| 0630361029 | SEALING CAP | Plugs unused pressure test ports |
| 4642306254 | ADAPTER | Converts tube fitting size for alternate coolers |
| 0634303340 | O-RING | Seals tube ends against housing bores |
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