Overview
The ZF 4681.056.011 6 BP 210 BASICPOWER Transmission Assembly | Complete Unit is a factory-engineered, drop-in replacement assembly designed for heavy-duty ZF drivelines. This complete unit integrates the main housing, valve body, clutch packs, and planetary gear sets into a single, pre-assembled module. It functions as the core power transfer component within the BP 210 and BP 230 series transmissions, converting engine torque into controlled, multi-speed output for construction, agricultural, and material handling equipment. The SKU 4681.056.011 specifically denotes a 6-speed configuration with the BASICPOWER control logic, ensuring reliable hydraulic modulation for smooth shifting under high load conditions.
Symptoms of Failure
When the ZF 4681.056.011 assembly begins to degrade, operators will notice distinct performance issues. Recognizing these symptoms early can prevent catastrophic driveline damage:
- Delayed or harsh engagement: A noticeable lag when shifting from neutral to forward or reverse, often accompanied by a jarring clunk. This indicates worn clutch pack clearances or degraded internal seals.
- Intermittent gear slipping under load: The transmission may momentarily lose power during uphill climbs or when carrying heavy payloads, with the engine RPM rising without a corresponding increase in vehicle speed.
- External oil seepage from the main housing seam: Persistent fluid accumulation around the bell housing or the pan gasket area, often leaving dark puddles after the machine sits overnight.
- Unusual whining or grinding noises: A high-pitched metallic sound that intensifies with engine RPM, typically originating from the planetary gear section or the torque converter interface.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 4681.056.011 |
| Assembly Type | Complete Transmission Unit (6-Speed) |
| Dry Weight (approx.) | 185 kg (408 lbs) |
| Overall Length | 720 mm |
| Housing Material | High-Strength Aluminum Alloy (A356-T6) |
| Input Torque Capacity | 850 Nm (627 lb-ft) |
| OEM Reference | ZF 0501.210.001 (Superseded) |
| Fluid Capacity | 12.5 Liters (ZF TE-ML 03 or 05) |
Compatibility
This ZF 4681.056.011 assembly is engineered for direct fitment into the following ZF transmission model families. It is critical to verify the bell housing pattern and shift linkage configuration before installation:
- ZF WG 180 Series (WG 180, WG 181, WG 182) – All variants using the BP 210 control module.
- ZF WG 200 Series (WG 200, WG 201, WG 202) – Specifically units with a 6-speed planetary layout.
- ZF BP 210 Series (BP 210, BP 211, BP 212) – Direct OEM replacement for BASICPOWER models.
- ZF BP 230 Series (BP 230, BP 231) – Compatible with the higher-torque housing adapters.
For non-standard applications, always cross-reference the original transmission serial number against the 4681.056.011 to ensure hydraulic pressure ratings and clutch count match the vehicle’s PTO requirements.
