Overview
The ZF 4657.171.038 CLUTCH is a critical torque-transfer component engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part sits within the planetary gear set assembly, where it engages and disengages hydraulic pressure to control gear selection and power flow. The SKU 4657.171.038 is precision-machined to factory tolerances, ensuring seamless integration with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain optimal hydraulic sealing and clutch pack alignment.
Symptoms of Failure
When the ZF 4657.171.038 clutch wears out, operators typically encounter these specific failure indicators:
- Delayed or harsh shifting between forward gears – worn friction surfaces cause hesitation during upshifts and downshifts, often accompanied by a noticeable jolt.
- Transmission fluid contamination with dark debris – degraded clutch material sheds particles into the oil, visible during routine fluid checks or filter changes.
- Torque converter shudder under moderate load – the clutch fails to hold steady pressure, resulting in vibration during acceleration between 20–40 mph.
- Intermittent loss of drive in specific gear ranges – the clutch slips unpredictably, causing the transmission to momentarily lose power delivery before re-engaging.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.171.038 |
| Outer Diameter | 198 mm |
| Inner Diameter | 135 mm |
| Friction Plate Thickness | 2.8 mm |
| Material | Sintered bronze on steel core |
| Weight | 1.42 kg |
| OEM Reference | ZF 4657.171.038 |
| Torque Capacity | 1,200 Nm |
Compatibility
This clutch is designed for ZF WG 190 and WG 210 series transmissions, including the WG 191 and WG 211 sub-variants. It directly replaces the original clutch pack in models such as WG180, WG200, WG190, and WG210. The part interfaces with the HOUSING REAR PART and requires the CYLINDRICAL PIN for proper alignment during installation. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101049 | TRANSMISSION HOUSING | Encloses and supports all internal gear and clutch assemblies |
| 4657301130 | HOUS.FRONT SECT | Front section housing that aligns the input shaft and clutch drum |
| 4657301131 | HOUSING REAR PART | Rear housing section that supports the output shaft and planetary carrier |
| 0631306816 | CYLINDRICAL PIN | Precision alignment pin for doweling housing sections together |
| 0636102489 | CAP SCREW | M10 bolt securing the clutch pack retaining plate |
| 4656301148 | FIXING PLATE | Locks the clutch piston in position within the drum |
| 0636102463 | CAP SCREW | M8 bolt for fastening the front housing section |
| 4657201133 | SCREEN SHEET | Fine mesh filter protecting clutch hydraulic circuits from debris |
| 0636115287 | CAP SCREW | M12 bolt used for rear housing attachment |
| 4657301065 | PLATE | Steel separator plate between clutch friction discs |
Frequently Asked Questions
Q: Can the ZF 4657.171.038 clutch be used in a WG 180 transmission?
A: Yes, this clutch is compatible with WG 180, WG 190, WG 200, and WG 210 series transmissions. Always confirm your transmission model code and serial number before installation.
Q: What causes premature wear on this clutch part?
A: Common causes include low hydraulic pressure from a worn pump, contaminated transmission fluid, or excessive heat from prolonged heavy-load operation. Regular fluid changes and filter replacements extend clutch life significantly.
Q: Do I need to replace the CYLINDRICAL PIN when installing this clutch?
A: It is strongly recommended. The CYLINDRICAL PIN ensures precise alignment between the housing sections; reusing a worn pin can cause misalignment and accelerated clutch wear.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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