Overview
The ZF 4657.130.403 ENGINE CONNECTION is a critical OEM genuine interface component designed specifically for the WG 210 Series transmission. This precision-engineered part serves as the primary mechanical link between the transmission assembly and the engine flywheel housing, ensuring accurate alignment and secure power transfer. As an original ZF part, SKU 4657.130.403 guarantees exact fitment and durability under high-torque industrial applications. It sits at the input section of the transmission, directly interfacing with the TRANSMISSION HOUSING to maintain structural integrity and prevent misalignment during operation.
Symptoms of Failure
- Oil leakage at the engine-transmission interface: A worn ENGINE CONNECTION often causes hydraulic fluid seepage, leading to low transmission fluid levels and potential overheating.
- Vibration during gear engagement: Degraded mating surfaces result in excessive play, producing noticeable shuddering or shaking when shifting between forward and reverse.
- Delayed or harsh shifting: Misalignment from a failing part disrupts hydraulic pressure, causing erratic clutch engagement and sluggish response times.
- Metallic grinding noises: Advanced wear allows metal-on-metal contact between the engine connection and adjacent components like the HOUS.FRONT SECT, indicating imminent failure.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4657.130.403 |
| OEM Reference | ZF Genuine WG210 Series |
| Material | High-grade cast iron with corrosion-resistant coating |
| Weight | 2.8 kg (6.2 lbs) |
| Outer Diameter | 185 mm |
| Bolt Hole Pattern | 8x M12 on 160 mm PCD |
| Sealing Surface | Precision-ground to 0.02 mm tolerance |
Compatibility
This ENGINE CONNECTION is engineered for the ZF WG 210 Series, but it also fits select models in the WG180 and WG200 families due to shared bolt patterns and pilot bore dimensions. It is commonly paired with the HOUSING REAR PART and secured using the CYLINDRICAL PIN for precise alignment. Always verify compatibility with your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657201027 | HOUS.FRONT SECT | Front section housing input shaft bearings |
| 4657201012 | HOUSING REAR PART | Rear casing supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636100801 | CAP SCREW | Fastener for securing connection flanges |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 4657301032 | SCREEN SHEET | Filter mesh for oil circuit protection |
| 4657301033 | SCREEN SHEET | Fine filter screen for hydraulic system |
| 0636100803 | CAP SCREW | High-strength bolt for housing joints |
| 4681301040 | OIL FEED.HOUSG. | Lubrication channel housing for bearings |
