Overview
The ZF 4644.130.114 ENGINE CONNECTION is a critical interface component designed specifically for the WG 201 Series transmission. This OEM genuine part serves as the primary mechanical link between the engine flywheel housing and the transmission bell housing, ensuring precise axial alignment and torque transfer. The SKU 4644.130.114 is engineered to absorb torsional vibrations while maintaining a rigid connection, which directly impacts drivetrain longevity. When installed alongside the 4644101203 TRANSMISSION HOUSING, this engine connection forms a sealed assembly that prevents contamination ingress and maintains hydraulic pressure integrity within the converter housing.
Symptoms of Failure
When the ZF 4644.130.114 ENGINE CONNECTION begins to fail, operators typically notice these specific issues:
- Oil leaks at the engine-transmission interface – Worn sealing surfaces cause ATF fluid to weep from the bell housing joint, often mistaken for rear main seal failure.
- Gear slipping under load – Degraded connection alignment leads to misalignment of the input shaft, causing intermittent clutch pack engagement loss during acceleration.
- Abnormal driveline vibration – A loose or cracked engine connection produces low-frequency shuddering, particularly at highway speeds between 45-65 mph.
- Delayed engagement from Park to Drive – Compromised structural integrity allows the transmission to shift position relative to the engine, delaying hydraulic pressure buildup.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.130.114 |
| Material | High-grade cast aluminum alloy (A356-T6) |
| Overall Diameter | 285 mm (11.22 in) |
| Bolt Hole Pattern | 6x M12 on 240 mm PCD |
| Weight | 2.8 kg (6.17 lbs) |
| OEM Reference | ZF 4644.130.114 |
| Sealing Surface Finish | Ra 0.8 µm |
Compatibility
This ENGINE CONNECTION is primarily validated for the ZF WG 201 Series, but engineering cross-references confirm fitment with the following transmission models: WG180, WG200, and WG211. It is also compatible with certain Ecomat 4HP and 5HP variants that share the SAE 3 bell housing pattern. For proper installation, always pair this part with the 4644301382 TRANSMISSION HOUSING and the 4644301189 THREADED BUSH to ensure correct bolt torque distribution. The 0636302005 SCREW PLUG must also be replaced during service to prevent pressure loss in the lubrication circuit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101203 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301382 | TRANSMISSION HOUSING | Rear housing section for output shaft |
| 4644301189 | THREADED BUSH | Alignment dowel for housing centering |
| 0636302005 | SCREW PLUG | Oil drain port seal |
| 0634306198 | O-RING | Static seal for connection flange |
| 0634801098 | SEALING RING | Copper crush washer for bolt heads |
| 0730365067 | TYPE PLATE | Identification tag with serial number |
| 0631311009 | GROOVED STUD | Threaded fastener for housing attachment |
| 4644301161 | COVER PLATE | Access panel for valve body inspection |
| 0636100621 | HEXAGON SCREW | M10 bolt for cover plate retention |
