Overview
The ZF 4657.130.084 ENGINE CONNECTION is a critical OEM genuine interface component designed for the WG 210 and WG 230 series transmissions. This part serves as the primary mechanical link between the engine flywheel housing and the transmission bell housing, ensuring precise alignment and torque transfer. As a dedicated engine connection plate, it absorbs torsional vibrations while maintaining a sealed boundary to prevent fluid migration. The SKU 4657.130.084 is engineered to ZF’s exacting tolerances, making it a direct replacement for worn or damaged units in heavy-duty drivelines. When paired with a robust TRANSMISSION HOUSING, this component forms the structural backbone of the entire gearbox assembly.
Symptoms of Failure
- Oil seepage at the engine-transmission interface: A degraded engine connection often causes transmission fluid to weep from the mating surface, leaving visible stains on the bell housing.
- Audible knocking or vibration during gear engagement: Worn alignment surfaces allow the transmission to shift out of true center, producing metallic clatter under load.
- Hard shifting or delayed engagement: Misalignment from a failing connection plate places stress on shift forks and synchronizers, leading to sluggish gear changes.
- Increased driveline backlash: Excessive play between the engine and transmission indicates the connection plate has lost its structural integrity, requiring immediate replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.130.084 |
| Material | High-tensile cast aluminum alloy |
| Overall Diameter | 380 mm (approx.) |
| Bolt Hole Pattern | 12-point SAE standard |
| Dry Weight | 4.2 kg (9.3 lbs) |
| Surface Finish | Corrosion-resistant anodized |
| Torque Rating | 1,200 Nm max input |
Compatibility
This genuine ZF engine connection is specifically validated for the WG 210 and WG 230 transmission series. It also fits select variants of the WG180 and WG200 models where the bell housing interface matches the 12-bolt pattern. For complete assembly integrity, always install this part alongside a new HOUS.FRONT SECT and verify alignment with the HOUSING REAR PART. In extended drivelines, the HOUSING REAR SECTION must also be checked for concentricity to prevent premature wear.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101082 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201166 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201170 | HOUSING REAR PART | Rear casing for output bearing support |
| 4657298102 | HOUSING REAR SECTION | Extended rear housing for PTO mounting |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing centering |
| 0636100801 | CAP SCREW | M12 fastener for housing attachment |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil return |
| 4657301033 | SCREEN SHEET | Coarse mesh filter for sump pickup |
| 0636100803 | CAP SCREW | M10 fastener for cover plate |
