Overview
The ZF 4657.206.003 SCREW-IN SLEEVE is a precision-engineered OEM genuine component designed specifically for the WG 210 Series transmission. This threaded sleeve serves as a critical sealing and retention element within the hydraulic control system, securing internal fluid passages and maintaining proper pressure integrity. Located in the valve body or clutch housing assembly, the 4657.206.003 screw-in sleeve prevents cross-contamination between oil circuits. When installed correctly, this part works in tandem with the 4657201161: HOUS.FRONT SECT to ensure uninterrupted oil flow and reliable gear engagement.
Symptoms of Failure
- External oil seepage around the transmission housing – A worn or cracked screw-in sleeve often leads to visible fluid leaks near the WG210 casing, especially during operation under load.
- Erratic gear engagement or delayed shifting – When the sleeve loses its sealing capability, hydraulic pressure drops, causing hesitation or slipping between gear ranges.
- Contaminated transmission fluid – A failing sleeve can allow debris or air ingress, resulting in dark, burnt-smelling oil and reduced lubrication efficiency.
- Whining or buzzing noise from the transmission – Pressure loss due to a compromised sleeve may produce abnormal hydraulic sounds during acceleration or deceleration.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4657.206.003 |
| Material | Hardened alloy steel with corrosion-resistant coating |
| Thread Type | Metric fine thread (M18 x 1.5 estimated) |
| Overall Length | 32 mm (estimated) |
| Hex Size | 22 mm (estimated) |
| Weight | 0.045 kg (estimated) |
| OEM Reference | ZF 4657.206.003 |
| Sealing Surface | Integrated O-ring groove (uses 0634313603: O-RING) |
| Fastener Type | Screw-in sleeve with internal hex drive |
Compatibility
This genuine ZF screw-in sleeve is primarily designed for the WG 210 Series transmissions. Based on its thread pattern and sealing geometry, it is also compatible with the WG 180, WG 200, and select WG 250 variants that share the same hydraulic control architecture. For proper installation, always pair this sleeve with the 0636115293: 螺栓 and a new 0634313603: O-RING. Additionally, the 0631306816: CYLINDRICAL PIN is required for precise alignment during reassembly of the WG210 valve body.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657201161 | HOUS.FRONT SECT | Front housing section for WG210 transmission |
| 0636115293 | 螺栓 | Mounting bolt for transmission housing |
| 0634313603 | O-RING | Sealing ring for screw-in sleeve |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for valve body assembly |
| 0636100801 | CAP SCREW | Hex cap screw for cover plate |
| 4656301148 | FIXING PLATE | Retaining plate for internal components |
| 4657301032 | SCREEN SHEET | Fine mesh filter screen (variant A) |
| 4657301033 | SCREEN SHEET | Fine mesh filter screen (variant B) |
| 0636100803 | CAP SCREW | Hex cap screw for oil pan |
| 4681301040 | OIL FEED.HOUSG. | Oil feed housing for lubrication circuit |
