Overview
The ZF 4657.130.070 ENGINE CONNECTION is a critical OEM genuine interface component designed specifically for the WG191 and WG211 transmission series. This part serves as the primary mechanical link between the engine flywheel housing and the transmission bell housing, ensuring precise alignment and torque transfer during operation. As a structural adapter, it absorbs vibrational loads and maintains the concentricity required for optimal driveline performance. The SKU 4657.130.070 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or damaged units in heavy-duty industrial applications.
Symptoms of Failure
When the ZF 4657.130.070 ENGINE CONNECTION begins to fail, operators may notice engine-to-transmission misalignment causing abnormal gear noise during acceleration or deceleration. Another common symptom is oil seepage at the bell housing joint, often mistaken for a rear main seal leak. As the connection degrades, intermittent gear slipping under load can occur due to reduced clamping force. Finally, vibration through the chassis at highway speeds frequently indicates this part has developed fatigue cracks or bolt-hole elongation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4657.130.070 |
| Material | High-grade cast iron (GGG-40) |
| Outer Diameter | 310 mm |
| Bolt Hole Pattern | 8 x M12 on 280 mm PCD |
| Weight | 4.2 kg |
| OEM Reference | ZF 4657.130.070 |
| Surface Treatment | Phosphate-coated for corrosion resistance |
Compatibility
This ENGINE CONNECTION is engineered for the ZF WG191 and WG211 series transmissions, commonly found in municipal trucks, fire apparatus, and construction equipment. It also fits select variants of the WG180 and WG200 models where the bell housing pattern matches. For proper fitment, always verify the bolt hole configuration against your existing part. The 4657.130.070 is not interchangeable with earlier WG150 series units due to differing pilot bore diameters.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657120005 | PRESSURE REGULATOR | Controls hydraulic pressure to the clutch packs |
| 0501211384 | VALVE | Directs oil flow for shift timing |
| 0630532183 | INDENTED RING | Provides snap-fit retention for bearing assemblies |
| 4656306145 | PISTON | Applies clamping force to clutch discs |
| 0732042767 | COMPRESSION SPRING | Returns piston to neutral position |
| 0631612064 | SET SCREW | Secures valve body alignment |
| 0631610026 | SET SCREW | Locks adjustment sleeves in place |
| 4657101049 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657301130 | HOUS.FRONT SECT | Forward section of the transmission housing |
| 4657301131 | HOUSING REAR PART | Rear section of the transmission housing |
Frequently Asked Questions
Q: Can the 4657.130.070 ENGINE CONNECTION be reused if it shows minor surface rust?
A: No. Any corrosion on the mating surfaces can compromise alignment. Always replace this part with a new OEM unit to prevent premature bearing wear.
Q: How does this part interact with the PRESSURE REGULATOR (4657120005)?
A: The ENGINE CONNECTION provides the structural foundation for the valve body assembly. The PRESSURE REGULATOR mounts directly to the housing behind this connection, and any misalignment here will cause erratic hydraulic pressure readings.
Q: Is the INDENTED RING (0630532183) included with this part?
A: No. The INDENTED RING is a separate component that must be ordered individually. It is essential for retaining the input shaft bearing within the ENGINE CONNECTION bore.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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