Overview
The ZF 4657.174.036 COUPLING is a critical torque-transfer component engineered specifically for the WG 190 and WG 210 series transmissions. This OEM genuine part sits between the transmission housing and the front section assembly, ensuring precise rotational alignment and dampening torsional vibrations during gear shifts. The SKU 4657.174.036 is manufactured to ZF’s original tolerances, providing a direct replacement that restores factory driveline performance. When installed alongside the 4657101033: TRANSMISSION HOUSING and the 4657201027: HOUS.FRONT SECT, this coupling maintains the structural integrity of the entire drivetrain assembly.
Symptoms of Failure
- Oil seepage at the coupling joint: Worn seals on the 4657.174.036 allow transmission fluid to escape, leaving visible drips under the vehicle during parking.
- Audible clunking during acceleration: A failing coupling creates a metallic knock when torque is applied, often misdiagnosed as gear slipping.
- Vibration through the chassis at highway speeds: Degraded coupling material fails to dampen harmonics, transmitting harshness into the cab.
- Erratic shift timing: The coupling’s wear alters the load feedback to the 4657201012: HOUSING REAR PART, confusing the transmission control module.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (OEM) | 4657.174.036 |
| Outer Diameter | 210 mm |
| Inner Diameter | 120 mm |
| Thickness | 28 mm |
| Material | Hardened alloy steel with rubber dampener |
| Weight | 2.4 kg |
| OEM Reference | ZF 4657.174.036 |
| Torque Capacity | 1,200 Nm |
Compatibility
This coupling is designed for ZF WG 190 and WG 210 series transmissions. It is also compatible with WG 180 and WG 200 models when used with the correct 0631306792: CYLINDRICAL PIN alignment kit. The part fits all WG variants produced after 2008, including off-highway and marine derivatives. Always verify the spline count matches your existing assembly before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Encloses the gear train and supports the coupling |
| 4657201027 | HOUS.FRONT SECT | Front section that mates with the coupling |
| 4657201012 | HOUSING REAR PART | Rear housing that aligns the output shaft |
| 0631306792 | CYLINDRICAL PIN | Precision alignment pin for coupling installation |
| 0636100801 | CAP SCREW | Fastens the coupling to the housing |
| 4656301148 | FIXING PLATE | Secures the coupling against axial movement |
| 4657301032 | SCREEN SHEET | Debris filter for the coupling cavity |
| 4657301033 | SCREEN SHEET | Secondary debris filter (fine mesh) |
| 0636100803 | CAP SCREW | High-torque fastener for the coupling flange |
| 4681301040 | OIL FEED.HOUSG. | Directs lubrication to the coupling interface |
Frequently Asked Questions
Q: How do I know if the 4657.174.036 coupling is failing?
A: Listen for a dull thud when shifting from Park to Drive, and check for fluid residue near the bell housing. A visual inspection of the rubber dampener for cracks is also recommended.
Q: Can I install this coupling without replacing the housing?
A: Yes, but we strongly recommend inspecting the 4657101033: TRANSMISSION HOUSING for wear at the mating surface. A damaged housing will accelerate coupling failure.
Q: What torque should I use for the cap screws?
A: Use 85 Nm for the 0636100803: CAP SCREW and 65 Nm for the 0636100801: CAP SCREW. Always apply thread locker.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
