Overview
The ZF 4644.130.130 ENGINE CONNECTION is a critical interface component designed for the WG 200 series transmission family. This OEM genuine part serves as the primary mechanical link between the transmission housing and the engine bellhousing, ensuring precise alignment and secure torque transfer during operation. Positioned at the input flange of the gearbox, the ENGINE CONNECTION (SKU: 4644.130.130) absorbs torsional vibrations and maintains structural integrity under heavy-duty cycles. Without this component, the transmission cannot be properly mounted to the engine, making it essential for any rebuild or repair of the WG200 assembly.
Symptoms of Failure
- Oil leaks at the engine-transmission interface: A worn or cracked 4644.130.130 ENGINE CONNECTION often leads to fluid seepage, visible as drips or wet spots around the bellhousing area.
- Gear slipping under load: When this part fatigues, misalignment causes intermittent loss of drive, especially during acceleration or hill climbs.
- Abnormal vibration or knocking sounds: Degraded material in the connection point produces metallic rattling or low-frequency hums that intensify with RPM changes.
- Difficulty engaging gears: A distorted ENGINE CONNECTION prevents the input shaft from seating correctly, resulting in hard shifting or grinding.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4644.130.130 |
| Material | High-strength cast iron with corrosion-resistant coating |
| Weight | 2.8 kg (6.2 lbs) |
| Outer Diameter | 180 mm |
| Bolt Hole Pattern | 6-hole, 120° spacing, M12 threads |
| OEM Reference | ZF 4644.130.130 |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This ENGINE CONNECTION is specifically engineered for the ZF WG 200 series, including models such as WG180, WG200, and WG210. It is also compatible with select variants of the WG150 and WG250 when used with the appropriate TRANSMISSION HOUSING (4644101232) or TRANSMISSION HOUSING (4644301282). For proper sealing, always pair this part with a new O-RING (0634306198) and verify the SCREW PLUG (4475280043) is torqued to specification. The 4644.130.130 is not backward-compatible with older ZF 4HP or 5HP series without adapter kits.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101232 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301282 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 4475280043 | SCREW PLUG | Seals hydraulic passages |
| 0634306198 | O-RING | Prevents fluid leaks at joints |
| 0730365067 | TYPE PLATE | Identification tag for transmission model |
| 4644301298 | COVER PLATE | Protects internal components from debris |
| 4644106301 | SHIFT SYSTEM | Controls gear selection mechanism |
| 4644306507 | COVER PLATE | Secondary cover for valve body access |
| 4644159302 | SHIFT SYSTEM | Alternate shift assembly for WG200 |
| 4644306560 | VALVE BLOCK | Hydraulic control unit for clutch packs |
