Overview
The ZF 4656.183.025 is a precision-engineered OEM genuine part designed specifically for the WG 160 Series transmission. This component functions as a critical internal guide and support element within the gear train assembly, ensuring precise alignment and reducing friction during high-torque operations. As an original ZF part, the SKU 4656.183.025 guarantees exact fitment and material integrity, matching the factory specifications required for heavy-duty commercial vehicle transmissions. It sits within the main housing section, interfacing directly with the front and rear casing structures to maintain optimal gear mesh stability.
Symptoms of Failure
- Oil leaks around the transmission housing: When the 4656.183.025 wears or cracks, it can compromise the seal between the HOUS.FRONT SECT and the HOUSING REAR PART, leading to visible fluid seepage.
- Abnormal gear engagement noise: A worn part causes increased backlash, resulting in a distinct whining or grinding sound during shifting, especially under load.
- Intermittent gear slipping: Loss of positional accuracy from a degraded 4656.183.025 can cause the transmission to momentarily lose power transfer, particularly in higher gears.
- Vibration during acceleration: Structural fatigue in this component allows excessive movement, transmitting vibration through the drivetrain.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 4656.183.025 |
| Material | High-strength alloy steel with corrosion-resistant coating |
| Weight | 1.85 kg (estimated) |
| Dimensions (L x W x H) | 185 mm x 95 mm x 45 mm |
| OEM Reference | ZF 4656.183.025 |
| Surface Finish | Ground and polished |
Compatibility
This genuine ZF part is primarily engineered for the WG 160 Series transmission. It is also compatible with the WG 180 and WG 200 series models that share the same housing architecture. The 4656.183.025 is designed to work in conjunction with the HOUSING REAR PART and the CYLINDRICAL PIN for secure alignment. It is not suitable for older WG 120 or WG 140 series without verification of housing dimensions.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656201075 | HOUS.FRONT SECT | Front housing section for gear support |
| 4656201035 | HOUSING REAR PART | Rear housing section for shaft alignment |
| 4472239178 | HOUSING REAR PART | Alternate rear housing component |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100817 | CAP SCREW | Fastener for housing sections |
| 4656301016 | SCREEN SHEET | Filter screen for oil flow |
| 4656301017 | SCREEN SHEET | Secondary filter screen |
| 0636100803 | CAP SCREW | Mounting bolt for cover plates |
| 0501316470 | BREATHER | Pressure equalization valve |
| 0750301003 | OIL FEED.HOUSG. | Oil supply housing adapter |
Frequently Asked Questions
Q: How do I know if the 4656.183.025 is failing in my WG160 transmission?
A: Listen for a high-pitched whine during gear shifts and check for oil stains near the joint between the front and rear housing sections. These are early indicators of wear.
Q: Can I replace the 4656.183.025 without removing the entire transmission?
A: In most cases, yes. This part is accessible after removing the transmission side cover and the HOUSING REAR PART. However, professional alignment tools are recommended.
Q: Is this part interchangeable with aftermarket versions?
A: We strongly recommend using the OEM genuine ZF 4656.183.025. Aftermarket copies often use inferior alloys that fail prematurely under the high torque of WG series transmissions.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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