Overview
The ZF 4681.084.030 4 BP 230 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 assembly integrates the torque converter, clutch packs, and hydraulic valve body into a single, pre-tested module. Designed to restore original ZF performance, the SKU 4681.084.030 eliminates the need for piecemeal repairs, providing a direct solution for heavy-duty applications where downtime is critical. It sits as the central power transfer component, converting engine torque into controlled hydraulic force for smooth gear engagement in construction and agricultural machinery.
Symptoms of Failure
When the ZF 4681.084.030 assembly begins to degrade, operators will notice distinct operational issues. Recognizing these signs early can prevent catastrophic drivetrain damage.
- Delayed or harsh gear engagement: A worn assembly often causes a noticeable lag when shifting from neutral to forward or reverse, followed by a jarring clunk. This indicates internal clutch pack wear or hydraulic pressure loss.
- Transmission overheating under load: If the unit runs excessively hot during normal operation, it suggests internal seal failure or torque converter slippage, reducing cooling efficiency.
- Oil leaks from the bell housing or output shaft: External fluid seepage around the main case gaskets or output seal is a classic sign of seal hardening or bearing wear, leading to low fluid levels and eventual gear slipping.
- Intermittent power loss or shuddering: A failing assembly may cause the vehicle to hesitate or vibrate during acceleration, particularly under heavy loads, pointing to worn friction discs or a failing one-way clutch.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4681.084.030 |
| Assembly Type | Complete Transmission Unit (4 BP 230 BASICPOWER) |
| Overall Length | Approx. 620 mm (24.4 in) |
| Dry Weight | Approx. 145 kg (320 lbs) |
| Housing Material | High-strength cast iron (GGG-40) |
| Torque Converter Diameter | 340 mm (13.4 in) |
| Max Input Torque | 850 Nm (627 lb-ft) |
| OEM Reference | ZF 4681.084.030 (Original Equipment) |
Compatibility
This complete assembly is specifically engineered for ZF powershift transmissions within the BP 210 and BP 230 series families. It is a direct fit for the following models:
- ZF WG180 (all variants with BP 230 designation)
- ZF WG200 (including WG200-2 and WG200-3)
- ZF 4 BP 210 (early and late production runs)
- ZF 4 BP 230 (BASICPOWER and standard configurations)
Always verify your transmission serial number against the ZF 4681.084.030 specifications to ensure proper fitment. This unit is not compatible with the 5 BP series or older 3-speed models without adapter kits.
