Overview
The ZF 4681.054.029 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 fully assembled unit integrates the torque converter, planetary gear sets, and hydraulic control system into a single, pre-tested module. Designed for heavy-duty off-highway applications, this assembly restores original equipment performance by eliminating the need for piecemeal component replacement. The SKU 4681.054.029 is specifically configured for the 4-speed version of the BASICPOWER platform, ensuring precise gear ratio alignment and clutch pack engagement. It sits as the central power transfer unit between the engine flywheel and the driveline, managing torque multiplication and speed reduction under extreme load conditions.
Symptoms of Failure
When the ZF 4681.054.029 assembly begins to degrade, operators will notice distinct operational issues. Recognizing these failure modes early can prevent catastrophic drivetrain damage.
- Erratic gear engagement or slipping under load: The most common symptom is a delay in clutch pack engagement, causing the machine to hesitate or lose power when transitioning between forward and reverse gears. This often manifests as a “flare” in RPM without corresponding vehicle movement.
- External oil seepage from the bell housing or PTO ports: Worn seals within the assembly, particularly around the input shaft and converter housing, lead to visible ATF leaks. Look for drips accumulating on the bell housing or a persistent puddle beneath the transmission sump.
- Harsh or delayed shifts with audible clunking: As internal clutch discs wear or hydraulic pressure drops, shifts become jarring. A metallic “clunk” during gear changes indicates excessive clearance or impending component failure within the planetary gear sets.
- Overheating transmission fluid with burnt odor: A failing torque converter or blocked internal oil passages cause the fluid to overheat. If the transmission temperature gauge spikes or a burnt smell emanates from the dipstick, the complete assembly may be suffering from internal wear.
Technical Specifications
| Part Number | 4681.054.029 |
| Assembly Type | Complete Unit (4 BP 210 BASICPOWER) |
| Overall Length | ~ 680 mm (26.8 in) |
| Dry Weight | ~ 195 kg (430 lbs) |
| Housing Material | High-strength aluminum alloy (A356-T6) |
| Input Torque Capacity | Up to 1,200 Nm (885 lb-ft) |
| Fluid Capacity | ~ 18 liters (4.75 gallons) |
| OEM Reference | ZF 4681.054.029 (Direct replacement) |
Compatibility
This complete assembly is engineered for the ZF BP 210 and BP 230 series transmissions. It is a direct fit for the 4-speed BASICPOWER variants used in the following ZF transmission models:
- ZF WG180 (with BP 210 adapter housing)
- ZF WG200 (4-speed BASICPOWER configuration)
- ZF 4 BP 210 (Standard duty cycles)
- ZF 4 BP 230 (Higher torque applications)
- ZF 4WG-200 (Certain off-highway variants)
Always verify the transmission serial number and bell housing pattern before installation. This unit replaces the original 4681.054.029 assembly and is not backward compatible with 3-speed BP 200 series units without significant modifications.
