Overview
The ZF 4646.130.010 Engine Connection is a precision-machined OEM sub-assembly designed to interface the transmission bell housing with the engine flywheel housing on ZF WG 250, WG 260, and WG 310 series transmissions. This critical adapter plate ensures correct axial alignment between the engine crankshaft and the transmission input shaft, preventing torsional vibration and misalignment during high-torque operations. The SKU 4646.130.010 sits directly between the engine block and the TRANSMISSION HOUSING, forming the structural backbone of the driveline connection. Manufactured from high-strength cast iron, it accommodates the starter motor mounting and provides a sealed interface for the clutch housing.
Symptoms of Failure
- Oil seepage at the bell housing joint: A worn or warped 4646.130.010 connection allows transmission fluid to migrate past the gasket, leaving visible drips under the vehicle after shutdown.
- Audible knocking or vibration during gear engagement: Degraded mounting surfaces cause the engine connection to shift under load, producing a metallic clatter when shifting from Neutral to Drive or Reverse.
- Difficulty aligning the transmission during rebuild: If the engine connection flange is distorted, the COVER and housing will not seat flush, leading to repeated installation failures.
- Premature wear of the input shaft bearing: Misalignment from a damaged connection plate transfers axial stress to the bearing, causing growling noises and eventual shaft seizure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4646.130.010 |
| Material | Cast Iron (GGG-40) |
| Overall Diameter | 310 mm |
| Thickness | 22.5 mm |
| Bolt Hole Pattern | 8 x M12 on 280 mm PCD |
| Weight | 4.8 kg |
| OEM Reference | ZF 4646.130.010 |
| Sealing Surface | Ground finish, Ra 0.8 |
Compatibility
This engine connection is engineered for the ZF WG 250, WG 260, WG 261, WG 310, and WG 311 series transmissions. It is also compatible with earlier WG 180 and WG 200 variants when used with the appropriate 螺栓 (bolt) kit. The part is not interchangeable with the WG 120 or WG 150 series due to differing bolt circle dimensions. Always verify the flywheel housing pattern before ordering; the 4646.130.010 requires the use of 螺栓 (M12 x 1.5 x 40 mm) for secure mounting.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101173 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4646301349 | COVER | Seals the rear of the transmission housing |
| 0636115293 | 螺栓 | M10 mounting bolt for cover attachment |
| 0736300232 | 螺栓 | M12 bolt for engine connection flange |
| 4475280208 | SCREW PLUG | Seals oil passages in the housing |
| 0634316523 | O-RING | Hydraulic seal for cover joint |
| 0630361026 | SEALING CAP | Protects unused ports from debris |
| 0501214611 | 齿轮泵 | Hydraulic pump for clutch actuation |
| 0634313945 | O形圈 | Seal for pump mounting interface |
| 0501322532 | TEMPERATURE SENSOR | Monitors transmission fluid temperature |
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