Overview
The ZF 4139.330.011 FLEXPLATE is a critical drivetrain component engineered specifically for the WG200 and WG201 transmission series. This OEM genuine part serves as the interface between the engine’s crankshaft and the torque converter, transmitting rotational force while dampening torsional vibrations. Positioned at the front of the transmission assembly, the flexplate ensures smooth power transfer and maintains precise alignment within the bell housing. The SKU 4139.330.011 is manufactured to ZF’s exacting tolerances, guaranteeing a direct fit and long service life in heavy-duty industrial applications.
Symptoms of Failure
- Severe engine vibration during idle or acceleration – A worn flexplate can cause imbalance, leading to noticeable shaking that worsens under load.
- Metallic rattling or clicking from the bell housing – Cracked or fatigued flexplate teeth produce distinct noise, especially during gear engagement.
- Hard starting or no-start conditions – If the flexplate’s ring gear is damaged, the starter motor cannot properly engage the flywheel.
- Oil seepage near the crankshaft seal – A warped flexplate can misalign the torque converter, causing seal wear and fluid leaks.
Technical Specifications
| Part Number | 4139.330.011 |
| Material | High-carbon steel, heat-treated |
| Outer Diameter | 380 mm (estimated) |
| Bolt Hole Pattern | 6-hole, 10.5 mm diameter |
| Weight | 4.2 kg (9.3 lbs) |
| OEM Reference | ZF 4139.330.011 |
| Ring Gear Teeth | 120 (estimated) |
Compatibility
This flexplate is designed for ZF WG series transmissions, primarily the WG200 and WG201 models. It is also compatible with the WG180 series in certain configurations, as well as the WG250 and WG300 series when used with the appropriate torque converter. Always verify your transmission’s serial number before installation. For complete assembly, pair this flexplate with a TRANSMISSION HOUSING (4644101232) or a TRANSMISSION HOUSING (4644301282) to ensure structural integrity. Additionally, use a SCREW PLUG (4475280043) for sealing access points and a O-RING (0634306198) to prevent fluid leaks at mating surfaces.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101232 | TRANSMISSION HOUSING | Encloses and supports internal transmission components |
| 4644301282 | TRANSMISSION HOUSING | Alternative housing for WG200 series |
| 4475280043 | SCREW PLUG | Seals fluid passages and inspection ports |
| 0634306198 | O-RING | Provides leak-proof seal between housing and cover |
| 0730365067 | TYPE PLATE | Identification plate for transmission model |
| 4644301298 | COVER PLATE | Protects internal components from debris |
| 4644106301 | SHIFT SYSTEM | Controls gear selection and engagement |
| 4644306507 | COVER PLATE | Secondary cover for valve body access |
| 4644159302 | SHIFT SYSTEM | Alternative shift mechanism for WG201 |
| 4644306560 | VALVE BLOCK | Regulates hydraulic pressure for clutch packs |
