Overview
The ZF 4660.221.006 TUBE is a precision-engineered fluid conduit designed specifically for the WG 92 Series transmission family. This OEM genuine part, identified by SKU 4660.221.006, functions as a critical hydraulic channel within the valve body assembly, directing pressurized oil to the clutch packs and torque converter. It ensures consistent lubrication and cooling flow throughout the transmission system. When paired with a robust 4660101012: TRANSMISSION HOUSING, this tube maintains the structural integrity of the internal fluid circuit. The 4660.221.006 TUBE is manufactured to ZF’s exacting tolerances, guaranteeing a leak-free interface with adjacent components.
Symptoms of Failure
- Hydraulic fluid seepage at tube junctions: Worn sealing surfaces on the 4660.221.006 TUBE can cause slow oil leaks around the connection points, leading to low fluid levels and eventual gear slipping.
- Erratic shift timing or harsh engagement: A cracked or deformed tube disrupts oil pressure delivery, resulting in delayed or abrupt gear changes during acceleration.
- Torque converter shudder under load: Restricted flow through a damaged tube starves the converter of lubrication, causing vibration or shuddering at highway speeds.
- Overheating transmission fluid: Inadequate oil circulation due to a compromised tube forces the system to run hotter, accelerating wear on internal seals and clutches.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4660.221.006 |
| Product Name | TUBE for WG92 |
| Material | High-strength steel with anti-corrosion coating |
| Overall Length | 185 mm (estimated) |
| Outer Diameter | 12 mm (estimated) |
| Wall Thickness | 1.5 mm (estimated) |
| Weight | 0.12 kg (estimated) |
| OEM Reference | ZF 4660.221.006 |
| O-Ring Seal | 0634100317: O-RING |
| Mounting Hardware | 0636103273: CAP SCREW |
| Plug | 0750100022: SCREW PLUG |
Compatibility
This 4660.221.006 TUBE is engineered for the ZF WG 92 Series, which includes models such as the WG92, WG120, WG150, WG180, and WG200. It is also compatible with certain WG 92 variants used in off-highway and industrial drivetrains. The tube interfaces directly with the 4660301020: HOUSING and is secured using a 0631306174: CYLINDRICAL PIN for precise alignment. For identification purposes, the 0769123894: TYPE PLATE should be referenced to confirm model-specific fitment. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4660101012 | TRANSMISSION HOUSING | Main structural casing for gear and shaft assembly |
| 4660301020 | HOUSING | Secondary housing for valve body and oil passages |
| 0631306174 | CYLINDRICAL PIN | Alignment dowel for precise component positioning |
| 0769123894 | TYPE PLATE | Identification plate with transmission model data |
| 4660221012 | SUCTION TUBE | Oil intake tube from pan to pump |
| 0634100317 | O-RING | Seal for tube-to-housing connection |
| 0636103273 | CAP SCREW | Fastener for securing tube assembly |
| 0750100022 | SCREW PLUG | Threaded plug for oil gallery access |
| 4660101804 | TRANSMISSION HOUSING | Alternate housing variant for specific models |
| 4660301008 | HOUSING | Alternate housing variant for valve body |
