Overview
The ZF 0501.209.099 TUBE for WG200 is a precision-engineered hydraulic fluid conduit designed to maintain consistent oil flow within the transmission’s valve body and lubrication circuits. This OEM genuine part, identified by SKU 0501.209.099, sits between the main control unit and the clutch pack assembly, ensuring pressurized oil reaches critical components without restriction. As a factory-spec replacement, it guarantees exact fitment and material integrity for the WG 200 Series, preventing cross-threading or deformation under high thermal loads. When paired with a properly sealed TRANSMISSION HOUSING, this tube forms a leak-proof circuit that sustains shift quality and torque delivery.
Symptoms of Failure
- Hydraulic fluid seepage near the valve body: A cracked or corroded 0501.209.099 tube allows ATF to escape, leaving visible puddles under the transmission pan and causing low fluid levels.
- Delayed or harsh gear engagement: When the tube’s internal bore becomes obstructed by debris or wear, oil pressure drops, leading to sluggish shifts or sudden clunks during acceleration.
- Overheating transmission: Restricted flow through a damaged tube reduces lubrication to bearings and clutches, triggering thermal warnings and potential internal damage.
- Erratic shift patterns under load: A failing tube disrupts the precise oil metering required for smooth ratio changes, causing the transmission to hunt or slip on inclines.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0501.209.099 |
| Material | Seamless steel with zinc-nickel plating |
| Length | 185 mm (estimated) |
| Outer Diameter | 12 mm |
| Wall Thickness | 1.5 mm |
| Weight | 0.08 kg |
| OEM Reference | ZF 0501.209.099 |
| Sealing Interface | Compatible with O-Ring 0634306525 |
Compatibility
This tube is engineered for the ZF WG 200 Series transmissions, including models WG180, WG200, and WG210 used in heavy-duty trucks, buses, and off-highway equipment. It directly replaces the original factory tube in the hydraulic control circuit. For complete assembly, ensure the TRANSMISSION HOUSING is free of cracks and that the TYPE PLATE matches your unit’s serial number. The tube also interfaces with the GROOVED STUD that secures the line to the valve body.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101216 | TRANSMISSION HOUSING | Encloses gear sets and oil passages |
| 4644301223 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 0730365067 | TYPE PLATE | Identifies transmission model and specs |
| 0631311009 | GROOVED STUD | Secures tube and housing alignment |
| 4644303060 | COVER PLATE | Protects valve body access port |
| 4644303061 | COVER PLATE | Alternate cover plate for different builds |
| 0634306525 | O-RING | Seals tube-to-housing connection |
| 0636305026 | SCREW PLUG | Closes unused hydraulic ports |
| 4644301279 | SCREEN SHEET | Filters debris from oil flow |
| 4644301088 | SEALING CAP | Prevents contamination during storage |
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