Overview
The ZF 4644.130.199 ENGINE CONNECTION is a critical interface component designed for the WG 200 Series transmission. This OEM genuine 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 a structural adapter, it absorbs vibrational loads while maintaining the concentricity required for smooth driveline engagement. The SKU 4644.130.199 is manufactured to ZF’s exacting tolerances, making it essential for maintaining the integrity of the entire powertrain assembly. When paired with the 4644101223: TRANSMISSION HOUSING and the 4644301225: TRANSMISSION HOUSING, this engine connection ensures a sealed, rigid mounting point that prevents misalignment under heavy loads.
Symptoms of Failure
- Oil seepage at the engine-transmission interface: A worn 4644.130.199 connection often causes fluid migration past the mating surfaces, leading to visible drips or wet spots around the bell housing area.
- Abnormal gear engagement noise: When this part fatigues, the resulting play between the engine and transmission produces a distinct clunking or grinding sound during gear shifts, especially under load.
- Vibration during acceleration: A degraded engine connection allows micro-movements that transmit through the driveline, causing a low-frequency shudder that intensifies at higher RPMs.
- Premature bearing wear: Misalignment from a failing connection accelerates wear on input shaft bearings, often requiring replacement of the 4644301298: COVER PLATE and associated seals.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.130.199 |
| Material | High-strength aluminum alloy (EN AC-42100) |
| Overall Diameter | 320 mm |
| Bolt Hole Pattern | 12x M12 on 280 mm PCD |
| Weight | 4.8 kg |
| OEM Reference | ZF 4644.130.199 |
| Surface Treatment | Black anodized with corrosion-resistant coating |
| Operating Temperature Range | -40°C to +120°C |
Compatibility
This engine connection is primarily designed for the ZF WG 200 Series transmissions, including the WG200, WG210, and WG220 variants. It also fits select WG180 models when used with the appropriate 0730365125: TYPE PLATE for identification. The 4644.130.199 is compatible with both standard and reinforced bell housing configurations, though verification of bolt pattern alignment is recommended for retrofit applications. For optimal sealing, always pair this part with a new 0634306525: O-RING and 0636305026: SCREW PLUG during installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101223 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4644301225 | TRANSMISSION HOUSING | Secondary housing for clutch assembly |
| 0730365125 | TYPE PLATE | Identification tag for transmission model |
| 4644301298 | COVER PLATE | Seals the rear bearing cavity |
| 0634306525 | O-RING | Prevents fluid leaks at mating surfaces |
| 0636305026 | SCREW PLUG | Seals oil drain/fill ports |
| 4644301279 | SCREEN SHEET | Filters debris from hydraulic fluid |
| 4644301088 | SEALING CAP | Protects unused sensor ports |
| 4644106300 | SHIFT SYSTEM | Controls gear selection mechanism |
| 4644306500 | COVER PLATE | Encloses the shift actuator housing |
