Overview
The ZF 4657.175.014 COUPLING is a critical driveline component engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part functions as the primary torque transfer interface between the engine output and the transmission input shaft, ensuring smooth power delivery and dampening torsional vibrations. Located within the bell housing assembly, the coupling works in concert with the TRANSMISSION HOUSING to maintain precise alignment under heavy load conditions. The SKU 4657.175.014 is manufactured to ZF’s exacting tolerances, providing a direct replacement that restores factory-specified performance in BP 210, BP 230, WG 190, WG 210, and WG 230 series transmissions.
Symptoms of Failure
When the ZF 4657.175.014 coupling begins to wear, operators typically notice three distinct failure indicators. First, a pronounced clunking noise during gear engagement signals excessive clearance between the coupling and the transmission input shaft. Second, intermittent power loss under acceleration occurs as the coupling slips, often misdiagnosed as a clutch issue. Third, visible metal debris in the transmission oil filter indicates advanced wear of the coupling splines. Fourth, vibration at highway speeds that intensifies with load suggests the coupling has lost its dampening capability, potentially damaging the adjacent HOUS.FRONT SECT if left unaddressed.
Technical Specifications
| OEM Part Number | 4657.175.014 |
| Outer Diameter | 175 mm |
| Inner Diameter | 45 mm |
| Overall Length | 85 mm |
| Material | High-tensile alloy steel with nitrided surface |
| Weight | 2.4 kg |
| Spline Count | 24 internal splines |
| Torque Capacity | 1,200 Nm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This coupling is engineered for ZF’s WG and BP series transmissions. It is a direct fit for the WG 190 and WG 210 models, and also serves as a compatible upgrade for the BP 210, BP 230, and WG 230 series. The part interfaces with the HOUSING REAR PART to complete the driveline assembly. For proper installation, the coupling must be secured using the CYLINDRICAL PIN to prevent rotational movement during operation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Encloses and supports gear train assembly |
| 4657201027 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4657201012 | HOUSING REAR PART | Rear housing section for output shaft alignment |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for coupling-to-housing positioning |
| 0636100801 | CAP SCREW | Fastener for coupling retention |
| 4656301148 | FIXING PLATE | Secures coupling to transmission shaft |
| 4657301032 | SCREEN SHEET | Filter screen for transmission oil circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for debris protection |
| 0636100803 | CAP SCREW | Mounting bolt for housing sections |
| 4681301040 | OIL FEED.HOUSG. | Lubrication channel for coupling bearings |
Frequently Asked Questions
Q: Can the 4657.175.014 coupling be installed without removing the transmission?
A: No. This coupling requires removal of the transmission from the vehicle and separation of the HOUS.FRONT SECT to access the coupling cavity. Plan for a full transmission service interval.
Q: What is the expected service life of this coupling in a WG 210 application?
A: Under normal operating conditions with proper lubrication via the OIL FEED.HOUSG., the coupling typically lasts 250,000 to 300,000 km. Heavy towing or off-road use reduces this interval.
Q: Does this part include the necessary mounting hardware?
A: The coupling is supplied as a standalone component. You must order the CYLINDRICAL PIN and CAP SCREW separately to complete the installation.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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