Overview
The ZF 4644.130.267 ENGINE CONNECTION is a critical OEM genuine interface component designed specifically for the WG 201 Series transmission. 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 an integral element of the drivetrain assembly, the SKU 4644.130.267 facilitates secure mounting while dampening vibration between the power source and the gearbox. Without this connection, the transmission cannot maintain proper engagement with the engine, leading to operational instability. This genuine ZF part is manufactured to exacting tolerances to guarantee a perfect fit within the WG201 platform.
Symptoms of Failure
- Transmission oil leaks at the bell housing interface: When the ENGINE CONNECTION 4644.130.267 degrades, the seal between the engine and transmission breaks, allowing ATF fluid to escape. This often appears as drips near the rear of the engine block.
- Abnormal gear engagement noise during shifting: A worn connection causes misalignment, producing a distinct clunking or grinding sound when the transmission shifts between forward and reverse gears.
- Vibration through the chassis under load: As the part fatigues, excessive play develops, transmitting engine harmonics directly into the transmission housing, felt as a persistent shudder during acceleration.
- Difficulty maintaining consistent gear position: A failing connection can cause the transmission to slip out of gear intermittently, particularly under heavy torque demand.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4644.130.267 |
| OEM Reference | ZF WG201 Series |
| Material | High-grade aluminum alloy with steel insert |
| Weight | 1.85 kg (4.08 lbs) |
| Overall Length | 142 mm |
| Mounting Bolt Pattern | 6-hole, 120 mm PCD |
| Sealing Surface Diameter | 98 mm |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This ENGINE CONNECTION is engineered for the ZF WG 201 Series, but it also fits select models in the WG180 and WG200 families due to shared bell housing dimensions. Specifically, it is compatible with ZF WG180, WG200, and WG201 transmissions found in medium-duty trucks, construction equipment, and agricultural machinery. For proper installation, this part must be paired with the 4644101160: TRANSMISSION HOUSING and the 4644301323: TRANSMISSION HOUSING to ensure structural integrity. Additionally, the 4644301189: THREADED BUSH and 4475280043: SCREW PLUG are commonly replaced concurrently to maintain sealing performance.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101160 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4644301323 | TRANSMISSION HOUSING | Secondary housing for clutch pack support |
| 4644301189 | THREADED BUSH | Provides wear-resistant thread for mounting bolts |
| 4475280043 | SCREW PLUG | Seals oil passages in the housing |
| 0634306198 | O-RING | Prevents fluid leakage at connection joints |
| 0730365067 | TYPE PLATE | Identification label for transmission model |
| 4644301161 | COVER PLATE | Protects internal components from debris |
| 0636100621 | HEXAGON SCREW | Fastens housing sections together |
| 0631610020 | SET SCREW | Locks adjustment mechanisms in place |
| 0501218540 | BREATHER | Equalizes internal pressure and vents moisture |
