Overview
The ZF 0501.009.431 CONVERTER is a critical torque multiplication component engineered specifically for the BP210 and BP230 series transmissions. This OEM genuine part sits directly between the engine flywheel and the transmission input shaft, converting engine torque into hydraulic energy to drive the planetary gearset. As a precision-machined hydraulic coupling, the SKU 0501.009.431 ensures smooth power delivery and load management during heavy-duty industrial operations. When paired with a robust TRANSMISSION HOUSING, this converter maintains optimal fluid flow and thermal stability under sustained loads.
Symptoms of Failure
- Torque converter shudder or vibration during acceleration – A worn 0501.009.431 often produces a rhythmic shudder when the lock-up clutch engages, particularly at low speeds or under heavy load.
- Transmission fluid overheating and discoloration – Internal wear in the converter stator or impeller generates excessive heat, causing the ATF to darken and emit a burnt odor.
- Delayed or harsh gear engagement – When the converter fails to build adequate hydraulic pressure, operators experience a noticeable lag between shifting and actual gear engagement.
- Oil leaks around the bell housing area – Seal degradation in the converter hub leads to fluid seepage, often mistaken for a failing HOUS.FRONT SECT gasket.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0501.009.431 |
| OEM Reference | ZF 0501.009.431 |
| Material | High-strength aluminum alloy with hardened steel stator |
| Weight | Approx. 18.5 kg (40.8 lbs) |
| Outer Diameter | 340 mm (13.4 in) |
| Length | 210 mm (8.3 in) |
| Bolt Pattern | 6-hole, 180 mm PCD |
| Fluid Capacity | 2.8 liters (0.74 gal) |
| Max Torque Rating | 1,200 Nm (885 lb-ft) |
Compatibility
This converter is factory-specified for the ZF BP210 and BP230 series transmissions, commonly found in medium-duty trucks, buses, and construction equipment. It also cross-references to earlier WG180 and WG200 models where the bell housing pattern matches. For proper installation, ensure the HOUSING REAR PART and CASE are free from cracks or warpage. Always replace the converter seal and inspect the pump drive hub when servicing this unit.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4681101002 | TRANSMISSION HOUSING | Encloses the gearset and converter assembly |
| 4681201007 | HOUS.FRONT SECT | Front section housing for pump and converter |
| 4681201008 | HOUSING REAR PART | Rear section supporting output shaft |
| 4681298001 | CASE | Structural case for torque converter cavity |
| 0631306074 | CYLINDRICAL PIN | Alignment pin for housing mating surfaces |
| 0636100801 | CAP SCREW | Fastener for converter-to-flexplate connection |
| 4681301015 | FIXING PLATE | Retaining plate for converter stator shaft |
| 4681301016 | SCREEN SHEET | Filter screen for converter circuit |
| 4681301017 | SCREEN SHEET | Secondary filter screen for oil return |
| 0636100803 | CAP SCREW | Bolt for housing-to-converter attachment |
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