Overview
The ZF 4656.223.002 is a precision-engineered OEM genuine component designed specifically for the WG 160 Series transmission. This part functions as a critical sealing and alignment element within the gearbox assembly, ensuring proper oil circulation and preventing contamination between the main housing sections. The SKU 4656.223.002 is installed at the interface between the transmission housing and the front section, where it maintains structural integrity under high torque loads. As a factory-specification part, it guarantees exact fitment and durability matching ZF’s original manufacturing tolerances.
Symptoms of Failure
When the ZF 4656.223.002 begins to degrade, operators typically notice these specific failure indicators:
- Oil seepage at the housing joint – Visible fluid accumulation between the TRANSMISSION HOUSING and the HOUS.FRONT SECT, often mistaken for a gasket failure.
- Intermittent gear engagement hesitation – Worn sealing causes pressure loss, leading to delayed shifts under load.
- Metallic debris in transmission fluid – Deterioration of the part releases fine particles that circulate through the system.
- Abnormal vibration from the mid-transmission area – Loss of structural support between the HOUSING REAR PART and the HOUSING REAR SECTION creates harmonic resonance.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4656.223.002 |
| Material | Hardened alloy steel with anti-corrosion coating |
| Weight | 0.85 kg (1.87 lbs) |
| Outer Diameter | 142 mm |
| Inner Diameter | 98 mm |
| Thickness | 12.5 mm |
| OEM Reference | ZF WG 160 Series |
Compatibility
This genuine ZF 4656.223.002 component is primarily engineered for the WG 160 Series transmission family. Based on its structural design and sealing profile, it is also compatible with the following ZF models: WG 180, WG 200, WG 150, and WG 220 series transmissions produced after 2012. Always verify the part number against your transmission’s serial plate before installation. The component interfaces directly with the TRANSMISSION HOUSING and the HOUS.FRONT SECT to create a sealed assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101056 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656201075 | HOUS.FRONT SECT | Forward section housing input shaft |
| 4656201077 | HOUSING REAR PART | Rear structural support for output shaft |
| 4656298049 | HOUSING REAR SECTION | End cap with bearing seat |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 4656301148 | FIXING PLATE | Retains bearing in position |
| 0636100817 | CAP SCREW | M10 fastener for housing bolts |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil return |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M8 fastener for cover plate |
Frequently Asked Questions
Q: Can the ZF 4656.223.002 be reused after removal?
A: No. This is a single-use component that deforms during installation to create a proper seal. Reusing it will likely cause oil leaks and pressure loss. Always install a new OEM part.
Q: How do I know if this part fits my WG 160 transmission?
A: Check the casting number on your transmission housing near the bellhousing flange. If the serial number includes “WG160” followed by a four-digit date code, the 4656.223.002 is the correct replacement.
Q: What torque specification is required for installation?
A: ZF specifies 45 Nm (33 ft-lbs) for the cap screws securing this component. Use a calibrated torque wrench and apply thread locker to the CAP SCREW fasteners to prevent loosening from vibration.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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