Overview
This OEM genuine ZF 4656.183.061 is a critical internal component designed specifically for the WG 160 Series transmission. Positioned within the hydraulic control assembly, this part regulates oil flow and pressure to ensure smooth gear engagement and clutch pack operation. The SKU 4656.183.061 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn units in heavy-duty commercial vehicle transmissions. It interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to maintain proper hydraulic circuit integrity.
Symptoms of Failure
- Delayed or harsh shifting: When the 4656.183.061 wears, internal leakage causes sluggish engagement between gears, often accompanied by a noticeable “clunk” during upshifts.
- Erratic pressure fluctuations: A failing unit leads to inconsistent line pressure, causing the transmission to hunt for gears or unexpectedly drop out of gear under load.
- Oil seepage around the valve body: Worn sealing surfaces allow ATF to escape, leaving visible drips on the transmission pan or bell housing area.
- Overheating during prolonged operation: Reduced hydraulic efficiency forces the transmission to work harder, generating excess heat that may trigger warning lights or burnt fluid odor.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4656.183.061 |
| Material | Hardened steel alloy with corrosion-resistant coating |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 45 mm x 35 mm |
| OEM Reference | ZF 4656.183.061 (Genuine) |
| Operating Pressure Range | 8–22 bar (116–319 psi) |
Compatibility
This part is engineered for the ZF WG 160 Series transmission family. It is also compatible with the WG 180 and WG 200 models when used in similar hydraulic control configurations. The 4656.183.061 works in conjunction with the HOUSING REAR PART and the HOUSING REAR PART to complete the valve body assembly. Always verify your transmission model suffix before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101037 | TRANSMISSION HOUSING | Encloses and supports all internal transmission components |
| 4656201075 | HOUS.FRONT SECT | Front section of the transmission housing, aligns input shaft |
| 4656201035 | HOUSING REAR PART | Rear housing section, supports output shaft and bearings |
| 4472239178 | HOUSING REAR PART | Alternate rear housing variant for specific WG models |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise component positioning |
| 4656301148 | FIXING PLATE | Secures valve body components in place |
| 0636100817 | CAP SCREW | Fastener for housing and valve body assembly |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4656301017 | SCREEN SHEET | Alternate mesh filter for different fluid viscosity |
| 0636100803 | CAP SCREW | M8 cap screw for securing hydraulic passages |
Frequently Asked Questions
Q: How do I know if the 4656.183.061 is the correct part for my WG160 transmission?
A: Check your transmission serial number and compare it to the OEM parts list. This part is used in WG160 models built after 2015. If you see erratic shifting or pressure loss, it is a likely candidate for replacement.
Q: Can I install this part without removing the entire transmission?
A: Yes, in most cases the 4656.183.061 can be accessed by dropping the transmission pan and removing the valve body. However, you will need to replace the SCREEN SHEET and gaskets during reassembly to prevent contamination.
Q: What is the typical lifespan of this component?
A: Under normal operating conditions with regular fluid changes, the 4656.183.061 can last 300,000–500,000 km. Harsh driving or contaminated fluid will significantly reduce its service life.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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