Overview
The ZF 4681.054.045 4 BP 210 BASICPOWER Transmission Assembly represents a complete, drop-in replacement unit engineered for the BP 210 and BP 230 series of powershift transmissions. This assembly integrates the torque converter, clutch packs, and planetary gear sets into a single, pre-assembled module, eliminating the need for complex field rebuilds. Designed for medium-duty construction and agricultural machinery, the SKU 4681.054.045 serves as the core hydraulic-mechanical power path, converting engine torque into controlled forward and reverse motion. As a complete unit, it ensures precise gear engagement and consistent power delivery under heavy load conditions.
Symptoms of Failure
When the ZF 4681.054.045 assembly begins to degrade, operators typically notice three distinct failure modes. Delayed engagement or gear slipping under load is the most common indicator, often caused by worn clutch friction discs or degraded sealing rings within the unit. A second symptom is persistent hydraulic oil leaks around the bell housing or output shaft seal, which points to fatigued O-rings or a cracked housing. Third, abnormal whining or grinding noises during directional shifts suggest bearing wear or planetary gear damage. Finally, erratic shift quality or complete loss of forward/reverse can occur when the internal valve body or torque converter stator fails, requiring immediate replacement of the complete assembly.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4681.054.045 |
| Assembly Type | Complete Transmission Unit (4-speed) |
| Series Compatibility | BP 210, BP 230 |
| Overall Length (approx.) | 620 mm |
| Dry Weight (approx.) | 185 kg |
| Housing Material | High-grade cast iron (GGG-40) |
| Input Torque Capacity | 650 Nm (max) |
| OEM Reference | ZF 4681.054.045 / 4 BP 210 |
| Fluid Capacity (unit only) | 8.5 liters |
Compatibility
This complete assembly is specifically engineered for the ZF BP 210 and ZF BP 230 transmission families. It directly replaces units found in the following models and applications:
- ZF WG180 – Used in telescopic handlers and wheel loaders (BP 210 variant).
- ZF WG200 – Common in backhoe loaders and compact excavators (BP 230 variant).
- ZF 4 BP 210 – Standard in agricultural tractors and forklifts.
- ZF 4 BP 230 – Found in rough-terrain cranes and industrial sweepers.
Always verify the transmission serial number and bell housing pattern before installation. This unit is not backward-compatible with older 3-speed BP series without adapter modifications.
Installation Notes
Prior to installation, inspect the torque converter pilot bore and input shaft splines for wear. Use only ZF-approved hydraulic fluid (TE-ML 03 or equivalent). Torque all bell housing bolts to 95 Nm in a cross-sequence pattern.
