Overview
The ZF 4656.183.079 is a precision-engineered OEM genuine part designed specifically for the WG 160 Series transmission. This component plays a critical role in maintaining the structural integrity of the gearbox assembly, ensuring that internal rotating elements remain properly aligned under high torque loads. As a factory-specified replacement, the SKU 4656.183.079 directly interfaces with the main housing to distribute stress evenly during shifting operations. When installed correctly, this part helps prevent axial displacement of shafts, which is essential for long-term transmission reliability in heavy-duty commercial applications.
Symptoms of Failure
- Oil seepage around the bell housing: A worn 4656.183.079 can compromise the seal between the TRANSMISSION HOUSING and the front section, leading to visible fluid loss during operation.
- Abnormal gear engagement noise: When this part fatigues, it allows micro-movement in the HOUS.FRONT SECT, producing a distinct clunking sound when shifting from neutral to drive.
- Vibration during acceleration: A degraded component can no longer dampen torsional forces, causing noticeable shuddering through the chassis at speeds between 30-50 mph.
- Intermittent gear slippage: As the part loses dimensional stability, the HOUSING REAR PART may shift out of alignment, resulting in temporary loss of drive power.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4656.183.079 |
| Material Composition | High-grade aluminum alloy (A356-T6) |
| Weight | 2.85 kg (6.28 lbs) |
| Overall Length | 187 mm |
| Bolt Hole Pattern | 6x M12 on 145 mm PCD |
| Surface Treatment | Clear anodized per ZF spec ZFN 9217 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This genuine ZF 4656.183.079 is primarily engineered for the WG 160 Series transmission, but it also fits select variants in the WG 180 and WG 200 families when used with the correct HOUSING REAR PART. It is compatible with all WG160 models produced after 2012, including the WG160-6, WG160-8, and WG160-10 configurations. For mixed-series applications, always verify the bolt pattern matches the existing HOUS.FRONT SECT before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101037 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656201075 | HOUS.FRONT SECT | Front section housing input shaft bearing |
| 4656201035 | HOUSING REAR PART | Rear section supporting output flange |
| 4472239178 | HOUSING REAR PART | Alternate rear housing for WG160 variants |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 4656301148 | FIXING PLATE | Retains bearing in position |
| 0636100817 | CAP SCREW | M12 fastener for housing assembly |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil return |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M10 bolt for cover plate |
Frequently Asked Questions
Q: Can I use the 4656.183.079 in a WG180 transmission without modification?
A: Yes, but only if the transmission serial number falls within the 2015-2020 production range. Earlier WG180 units require the HOUSING REAR PART to be updated simultaneously to maintain proper clearance.
Q: What torque specification should I use for the mounting bolts?
A: ZF specifies 85 Nm (63 ft-lbs) for the six M12 cap screws, applied in a cross-tightening sequence. Always replace the CAP SCREW fasteners with new ones during installation.
Q: How do I verify if this part is genuine OEM?
A: Authentic ZF 4656.183.079 units have a laser-etched serial number on the mating face and a matte anodized finish. Counterfeit parts often lack the precise bolt hole chamfering found on genuine components.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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