Overview
The ZF 4656.183.367 is a precision-engineered OEM genuine component specifically designed for the WG 160 series transmission. This part serves as a critical internal guide and sealing element, positioned within the valve body or clutch housing assembly to regulate hydraulic fluid flow and maintain proper pressure during gear shifts. The SKU 4656.183.367 is manufactured to ZF’s exacting tolerances, ensuring reliable engagement and disengagement of planetary gear sets under heavy load conditions. When installed alongside the 4656101057: TRANSMISSION HOUSING, this part contributes to the structural integrity of the hydraulic circuit.
Symptoms of Failure
- Delayed or harsh shifting: A worn 4656.183.367 can cause erratic clutch pack engagement, leading to noticeable hesitation or jarring shifts during acceleration.
- Low hydraulic pressure warnings: Internal leakage past this component often triggers dashboard warning lights or diagnostic trouble codes related to insufficient line pressure.
- Transmission fluid contamination: Degradation of the sealing surfaces allows metallic debris to circulate, visible as dark or gritty fluid on the dipstick.
- Intermittent gear slippage: Under torque load, a failing part may cause the transmission to momentarily lose drive, particularly in higher gears.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4656.183.367 |
| Material | Hardened steel with nitrile rubber sealing lip |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions | 85 mm outer diameter x 22 mm height |
| OEM Reference | ZF 4656.183.367 (Genuine) |
| Operating Temperature Range | -40°C to +150°C |
Compatibility
This part is primarily engineered for the ZF WG 160 series transmission, commonly found in medium-duty commercial vehicles and off-highway equipment. It is also compatible with the WG 180 and WG 200 series due to shared hydraulic architecture. The 4656.183.367 interfaces directly with the 4656201075: HOUS.FRONT SECT and the 4656201078: HOUSING REAR PART, forming a sealed chamber for clutch actuation. For complete overhauls, the 4656298050: HOUSING REAR SECTION is often replaced simultaneously to prevent future leakage.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306816 | CYLINDRICAL PIN | Aligns and secures housing sections during assembly |
| 4656301148 | FIXING PLATE | Retains internal components against axial movement |
| 0636100817 | CAP SCREW | Fastens the valve body to the transmission housing |
| 4656301016 | SCREEN SHEET | Filters coarse debris from hydraulic fluid |
| 4656301017 | SCREEN SHEET | Secondary filtration for fine particulate matter |
| 0636100803 | CAP SCREW | Secures the rear housing cover plate |
Frequently Asked Questions
Q: How do I know if the 4656.183.367 needs replacement?
A: If you experience persistent low line pressure after replacing seals and gaskets, or if diagnostic codes point to clutch volume errors, this internal component is likely worn and should be inspected.
Q: Can I install this part without removing the transmission?
A: No. Access to the 4656.183.367 requires removal of the valve body and partial disassembly of the transmission housing. Always consult the ZF service manual for your WG 160 series.
Q: Is this part interchangeable with aftermarket versions?
A: Only OEM genuine ZF 4656.183.367 parts guarantee the precise material hardness and sealing geometry required for long service life. Aftermarket copies often fail prematurely under high torque loads.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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