Overview
The ZF 4681.086.005 6 BP 230 BASICPOWER Transmission Assembly represents a complete, drop-in replacement unit engineered for the BP 210 and BP 230 series. This fully assembled component integrates the hydraulic control unit, clutch packs, and planetary gear sets into a single, pre-tested assembly. As a direct OEM-spec part, the SKU 4681.086.005 eliminates the need for complex internal rebuilds, providing a reliable solution for restoring full power flow in medium-duty ZF transmissions. Designed for BASICPOWER variants, this assembly ensures consistent shift quality and torque handling under continuous load conditions.
Symptoms of Failure
When the ZF 4681.086.005 assembly begins to degrade, operators typically notice three distinct failure modes. First, delayed engagement or gear hunting occurs when the internal clutch packs lose hydraulic pressure, causing the transmission to hesitate before moving into forward or reverse. Second, intermittent gear slipping under load manifests as a sudden loss of power during acceleration, often accompanied by a temporary rise in engine RPM without corresponding vehicle speed. Third, contaminated transmission fluid with metallic debris indicates excessive wear within the planetary gear sets, leading to erratic shifting and eventual total loss of drive. These symptoms are frequently searched as “ZF transmission slipping when hot” or “BP 230 no reverse engagement.”
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number / SKU | 4681.086.005 |
| Assembly Type | Complete Transmission Unit (6-speed BASICPOWER) |
| Dry Weight (approx.) | 195 kg (430 lbs) |
| Overall Length | 620 mm |
| Housing Material | Die-cast aluminum alloy |
| Max Input Torque | 1,200 Nm |
| OEM Reference | ZF 4681.086.005 (Direct replacement) |
| Fluid Capacity | 12.5 liters (ZF LifeguardFluid 8) |
Compatibility
This complete assembly is specifically engineered for the ZF BP 210 and ZF BP 230 series transmissions. It directly replaces units found in the following ZF model variants:
- ZF WG180 (with BASICPOWER upgrade)
- ZF WG200 (BP 210/230 series)
- ZF 6 BP 210 BASICPOWER
- ZF 6 BP 230 BASICPOWER
- ZF Ecolife (early production runs with BP architecture)
Compatibility is confirmed for vehicles originally equipped with the 4681.086.005 SKU. Always cross-reference your transmission serial number with the OEM parts catalog before installation.
