Overview
The ZF 0501.009.457 CONVERTER is a critical torque converter assembly engineered specifically for the WG 200 Series transmission. This OEM genuine component sits between the engine flywheel and the transmission input shaft, modulating hydraulic fluid to multiply torque during vehicle launch and lock-up for efficient cruising. As the primary power transfer interface, the 0501.009.457 ensures smooth engagement and optimal driveline performance. This part number is a direct factory replacement, guaranteeing exact fitment and durability under heavy-duty cycles. When paired with a robust TRANSMISSION HOUSING, the converter maintains precise alignment and fluid sealing, preventing premature wear.
Symptoms of Failure
- Shuddering or vibration during acceleration – Worn converter clutch friction material causes intermittent slip, felt as a rhythmic shake between 20-40 mph.
- Delayed or harsh engagement – Internal stator or turbine damage leads to a noticeable lag when shifting from Park to Drive, often accompanied by a clunk.
- Overheating transmission fluid – A failing converter generates excessive heat due to internal leakage, causing the fluid to darken and emit a burnt odor.
- Fluid leaks near the bell housing – Degraded seals or a cracked converter hub allow ATF to escape, leaving puddles under the vehicle and reducing hydraulic pressure.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 0501.009.457 |
| Product Type | Torque Converter Assembly |
| Material | High-strength steel housing with aluminum impeller |
| Weight | Approx. 18.5 kg (40.8 lbs) |
| Outer Diameter | 310 mm |
| OEM Reference | ZF 0501.009.457 |
| Pilot Diameter | 45 mm |
| Bolt Pattern | 6 x M10 on 120 mm PCD |
Compatibility
This converter is engineered for the ZF WG 200 Series transmission family, including models such as the WG180, WG200, and WG210. It is also compatible with select variants of the ZF 6WG200 and 5WG200 used in municipal buses, fire trucks, and heavy construction equipment. For proper installation, ensure the transmission housing is free of cracks—replace with a new TRANSMISSION HOUSING if needed. The converter mounts directly behind the COVER PLATE, which must be torqued to spec. Always install a fresh O-RING on the converter hub to prevent fluid bypass.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101249 | TRANSMISSION HOUSING | Encloses gear train and converter assembly |
| 4644301402 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 4644301298 | COVER PLATE | Seals converter access opening |
| 0634306323 | O-RING | Prevents fluid leakage at converter hub |
| 0636305026 | SCREW PLUG | Seals drain or test ports |
| 4644301279 | SCREEN SHEET | Filters debris from hydraulic circuit |
| 4644301088 | SEALING CAP | Protects unused ports from contamination |
| 4644109044 | PARKING BRAKE | Locks output shaft when stationary |
| 0501211070 | BRAKE | Friction element for parking brake system |
| 0501317036 | PISTON | Actuates brake or clutch pack |
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