Overview
The ZF 4657.130.420 ENGINE CONNECTION is a critical OEM genuine interface component designed specifically for the WG 190 Series transmission. This part serves as the mechanical link between the engine flywheel housing and the transmission bell housing, ensuring precise alignment and secure torque transfer during operation. As a genuine ZF part, the SKU 4657.130.420 guarantees exact fitment and durability under high-stress industrial conditions. When installed alongside the TRANSMISSION HOUSING and HOUS.FRONT SECT, this engine connection forms the foundational mounting structure for the entire drivetrain assembly.
Symptoms of Failure
- Engine-to-transmission misalignment causing vibration during acceleration: When the 4657.130.420 wears or cracks, the connection point loses its precise geometry, leading to noticeable driveline shudder at low RPM.
- Oil seepage at the bell housing mating surface: A degraded engine connection gasket or cracked flange allows transmission fluid to escape, often visible as wet spots near the rear of the engine block.
- Difficulty engaging gears or delayed shift response: Worn mounting points can shift the transmission input shaft angle, causing synchronizer drag and harsh engagement in the WG190 series.
- Metallic clicking or grinding from the flywheel area: Loose fasteners or a fractured connection plate produce intermittent noise, especially during clutch actuation or load changes.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.130.420 |
| Material | High-grade cast iron with corrosion-resistant coating |
| Weight | 2.8 kg (6.2 lbs) |
| Overall Length | 185 mm |
| Mounting Bolt Pattern | 6-hole, 120 mm PCD |
| OEM Reference | ZF 4657.130.420 |
| Operating Temperature Range | -40°C to +120°C |
| Torque Specification | 85 Nm (63 ft-lbs) for M12 bolts |
Compatibility
This engine connection is primarily designed for the ZF WG 190 Series, but it also fits select models in the WG180 and WG200 families due to shared bell housing dimensions. It is fully compatible with the HOUSING REAR PART and HOUSING REAR SECTION assemblies. For optimal performance, always pair this part with the correct CYLINDRICAL PIN and CAP SCREW fasteners to ensure proper alignment and clamping force.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101078 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657201166 | HOUS.FRONT SECT | Front section of transmission housing |
| 4657201168 | HOUSING REAR PART | Rear housing segment for output shaft |
| 4657298101 | HOUSING REAR SECTION | Complete rear housing assembly |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M12 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retaining plate for connection assembly |
| 4657301032 | SCREEN SHEET | Filter screen for oil circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen |
| 0636100803 | CAP SCREW | M10 bolt for cover plate |
Frequently Asked Questions
Q: Can the 4657.130.420 be used on a ZF WG180 transmission?
A: Yes, this engine connection is cross-compatible with WG180 and WG200 models that share the same bell housing bolt pattern. Always verify the mounting flange thickness and dowel pin locations before installation.
Q: What torque should I use for the cap screws securing this part?
A: The recommended tightening torque for the M12 cap screws (part 0636100801) is 85 Nm (63 ft-lbs) applied in a star pattern. Over-torquing can distort the connection flange and cause premature failure.
Q: How do I know if my engine connection is worn out?
A: Look for visible cracks around the bolt holes, oil weeping at the mating surface, or a 0.5mm+ gap between the engine and transmission flanges. A dial indicator check showing more than 0.2mm runout indicates replacement is needed.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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