Overview
The ZF 4681.054.033 4 BP 210 BASICPOWER Transmission Assembly represents a complete, factory-matched unit engineered for demanding industrial driveline applications. As a fully assembled replacement, this component integrates the torque converter, planetary gear sets, and hydraulic control module into a single ready-to-install package. Specifically designed for the BP 210 and BP 230 series, this assembly eliminates the need for piecemeal repairs and ensures optimal hydraulic pressure distribution across all clutch packs. The SKU 4681.054.033 is a direct OEM-specification unit, meaning it replicates the original ZF manufacturing tolerances for both gear mesh and valve body calibration. This assembly sits as the central power transfer module between the engine flywheel and the output driveline, managing torque multiplication and gear ratio selection under continuous heavy-load cycles.
Symptoms of Failure
When the ZF 4681.054.033 assembly begins to degrade, operators will notice distinct performance issues that escalate rapidly if ignored. Delayed forward engagement after shifting from neutral is a primary indicator, often accompanied by a momentary loss of hydraulic prime within the valve body. A second common failure mode involves intermittent gear slipping under moderate to heavy throttle, where the transmission momentarily loses torque lock-up before abruptly re-engaging. External fluid seepage from the main housing seam typically appears as a dark, oily residue around the bell housing or output flange area, signaling degraded O-ring seals or a cracked pump body. Finally, erratic shift timing between 2nd and 3rd gear—where the transmission either shifts too early or hangs in gear—points to worn accumulator pistons or a failing governor pressure regulator within this specific assembly.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4681.054.033 |
| Assembly Type | Complete Unit (4 BP 210 BASICPOWER) |
| Overall Length | 685 mm (27.0 in) |
| Dry Weight | 142 kg (313 lbs) |
| Housing Material | High-tensile aluminum alloy (A356-T6) |
| Input Torque Capacity | 2,100 Nm (1,549 lb-ft) |
| Hydraulic Pressure Range | 12–18 bar (174–261 psi) |
| Bolt Torque Specification | 85 Nm (62.7 lb-ft) for bell housing |
| Fluid Capacity | 18.5 liters (4.9 US gal) |
Compatibility
This complete transmission assembly is engineered for direct fitment into ZF driveline models that utilize the BP 210 and BP 230 modular architecture. Primary compatible transmissions include the ZF WG180, ZF WG200, and ZF WG210 series, all of which share the same bell housing bolt pattern and input shaft spline count. Additionally, the assembly is backward-compatible with select ZF 4HP 220 and ZF 4HP 230 units that have been upgraded with the BASICPOWER hydraulic control system. For applications requiring a drop-in replacement, this unit also fits ZF Ecomat 4 HP 500 and ZF Ecomid 4 HP 250 models when used with the correct adapter plate (sold separately). Always verify the transmission serial number against the ZF compatibility chart to confirm bell housing depth and torque converter pilot diameter match your specific vehicle or equipment configuration.
