Overview
The ZF 4656.130.403 ENGINE CONNECTION is a critical OEM genuine interface component designed specifically for the WG 160 Series transmission family. This part serves as the primary mechanical link between the transmission assembly and the engine flywheel housing, ensuring precise alignment and secure torque transfer during operation. As a genuine ZF part, the SKU 4656.130.403 guarantees factory tolerances and material integrity, reducing the risk of vibration-induced wear. When installed alongside the TRANSMISSION HOUSING, this engine connection forms the structural backbone of the driveline, maintaining concentricity between rotating components.
Symptoms of Failure
- Oil seepage at the engine-transmission interface: A worn or cracked 4656.130.403 engine connection often allows transmission fluid to escape past the seal, leaving visible drips under the bell housing area.
- Audible knocking or clunking during gear engagement: When this connection loses its structural rigidity, the transmission can shift slightly relative to the engine, producing metallic sounds during acceleration or deceleration.
- Increased driveline vibration at highway speeds: A degraded engine connection fails to maintain proper alignment, causing harmonic vibrations that intensify above 45 mph and may be felt through the floorboard.
- Premature wear of the input shaft bearing: Misalignment from a failing 4656.130.403 places angular loads on the transmission input shaft, accelerating bearing failure and potentially damaging the HOUS.FRONT SECT.
Technical Specifications
| Part Number | 4656.130.403 |
| OEM Reference | ZF Genuine WG160 Series |
| Material | High-grade cast iron (GGG-40) |
| Overall Diameter | 310 mm (12.2 in) |
| Bolt Hole Pattern | 6-hole, 180 mm PCD |
| Weight | 4.2 kg (9.3 lbs) |
| Surface Finish | Phosphate-coated for corrosion resistance |
| Torque Spec | 85 Nm (63 ft-lbs) for mounting bolts |
Compatibility
This engine connection is primarily designed for the ZF WG 160 Series, but it also fits select models in the WG180 and WG200 families that share the same SAE bell housing pattern. It is directly compatible with transmissions using the HOUSING REAR PART (4656201036) and the HOUSING REAR PART (4472239179). Always verify the bolt pattern and pilot bore diameter against your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101031 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4656201075 | HOUS.FRONT SECT | Forward section supporting input shaft |
| 4656201036 | HOUSING REAR PART | Rear casing for output shaft support |
| 4472239179 | HOUSING REAR PART | Alternate rear housing variant |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 4656301148 | FIXING PLATE | Secures connection to flywheel housing |
| 0636100817 | CAP SCREW | M10 mounting bolt for connection |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil return |
| 4656301017 | SCREEN SHEET | Alternate mesh filter variant |
| 0636100803 | CAP SCREW | M8 bolt for accessory mounting |
Frequently Asked Questions
Q: Can the 4656.130.403 be used on a ZF WG180 transmission?
A: Yes, the WG180 shares the same SAE 3 bell housing pattern as the WG160, making this engine connection compatible. However, always measure the pilot bore depth, as some WG180 variants use a different flywheel thickness.
Q: What torque should I use when installing this engine connection?
A: ZF specifies 85 Nm (63 ft-lbs) for the six mounting bolts. Use a calibrated torque wrench and apply thread locker (Loctite 242) to prevent loosening from thermal cycling.
Q: Is the 4656.130.403 supplied with mounting bolts?
A: No, this part is sold as the engine connection casting only. You will need to order the CAP SCREW (0636100817) and CYLINDRICAL PIN (0631306816) separately for a complete installation.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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