Overview
The ZF 4681.056.008 6 BP 210 BASICPOWER Transmission Assembly represents a complete, ready-to-install unit engineered for demanding industrial driveline applications. As a full assembly, this part integrates the main housing, planetary gear sets, and hydraulic control system into a single, pre-assembled module, eliminating the need for complex component-by-component rebuilding. This specific SKU, 4681.056.008, is a direct replacement for the 6-speed BASICPOWER variant, designed to restore original performance in ZF BP 210 and BP 230 series transmissions. It serves as the core power transfer unit, converting engine torque into usable wheel or PTO output under heavy load conditions.
Symptoms of Failure
When the ZF 4681.056.008 assembly begins to degrade, operators will notice distinct operational issues. Recognizing these ZF transmission failure symptoms early can prevent catastrophic driveline damage.
- Delayed or Harsh Gear Engagement: A worn assembly often causes a noticeable lag when shifting from Neutral into Drive or Reverse, followed by a jarring clunk. This indicates internal clutch pack or hydraulic pressure loss within the unit.
- Chronic Oil Leaks at the Bell Housing: Seals within the complete assembly degrade over time. Look for transmission fluid leaks from the front pump area, which will appear as drips between the engine and transmission bell housing.
- Torque Converter Shudder: A vibration or shudder felt through the vehicle during light acceleration, particularly between 30-50 km/h, suggests the torque converter lock-up clutch or internal stator support within the assembly has failed.
- Complete Loss of Forward or Reverse: If the assembly experiences a catastrophic failure of the planetary gear set or a broken input shaft, the vehicle will fail to move in one or all gear ranges, requiring immediate replacement of the entire unit.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 4681.056.008 |
| Assembly Type | Complete Transmission Unit (6 BP 210 BASICPOWER) |
| Dry Weight (Estimated) | 185 kg (408 lbs) |
| Overall Length (Bell to Tail) | 720 mm |
| Housing Material | High-Strength Aluminum Alloy (Die-Cast) |
| OEM Reference | ZF Friedrichshafen AG / 4681.056.008 |
| Fluid Capacity | Approx. 14 Liters (ZF TE-ML 03 or 05) |
| Max Input Torque | 600 Nm (Estimated for BASICPOWER series) |
Compatibility
This ZF 4681.056.008 complete assembly is specifically engineered for the BP 210 and BP 230 transmission series. It is a direct fit for the 6-speed BASICPOWER variant. Based on the physical architecture and mounting patterns, this unit is compatible with the following ZF model families:
- ZF WG180 – Early generation models using the BP 210 housing pattern.
- ZF WG200 – Mid-range torque models requiring the 6-speed BASICPOWER configuration.
- ZF 6 BP 210 – Direct match for all standard 6 BP 210 applications (e.g., municipal trucks, fire apparatus).
- ZF 6 BP 230 – Compatible with the 6 BP 230 series, provided the bell housing and PTO configuration match the original equipment.
Note: Always verify the bell housing pattern (SAE 3 or SAE 2) and the PTO cover orientation against your original unit before installation. This assembly does not include a torque converter unless specified.
