Overview
The ZF 4681.054.022 4 BP 210 BASICPOWER Transmission Assembly | Complete Unit is a factory-grade, fully assembled drop-in solution designed for heavy-duty commercial vehicle applications. This complete assembly integrates the hydraulic control unit, clutch packs, and planetary gear sets into a single, pre-tested unit. As a core component of the BP 210 and BP 230 series, the SKU 4681.054.022 replaces the entire transmission core, eliminating the need for individual component rebuilds. It is engineered to restore original ZF shift quality and torque capacity, serving as the primary power transfer module between the engine and driveline in buses, trucks, and specialized off-road equipment.
Symptoms of Failure
When the ZF 4681.054.022 assembly begins to degrade, operators will notice distinct operational issues. Recognizing these signs early can prevent catastrophic driveline damage.
- Delayed or Harsh Gear Engagement: A worn assembly often causes a noticeable lag when shifting from Neutral to Drive or Reverse, followed by a jarring engagement. This indicates internal seal or clutch pack wear.
- Erratic Shift Patterns & Gear Slipping: The transmission may unexpectedly upshift or downshift under load, or the engine RPM will flare without a corresponding increase in vehicle speed. This is a classic sign of hydraulic pressure loss within the assembly.
- Torque Converter Lock-Up Failure: A failing unit may prevent the torque converter from locking up at highway speeds, leading to excessive heat buildup, reduced fuel economy, and a continuous whining noise from the transmission housing.
- External Fluid Contamination & Leaks: Visible oil seepage around the bell housing or main case seams, combined with a burnt odor from the transmission fluid, signals internal component failure and imminent assembly breakdown.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 4681.054.022 |
| Assembly Type | Complete Unit (4 BP 210 BASICPOWER) |
| Dry Weight (Estimated) | 285 kg (628 lbs) |
| Overall Length (Estimated) | 780 mm |
| Housing Material | High-Strength Aluminum Alloy |
| Torque Capacity (Estimated) | 2,100 Nm (1,549 lb-ft) |
| OEM Reference | ZF 4681.054.022 |
| Fluid Capacity (Approx.) | 22 Liters |
Compatibility
This complete assembly is specifically engineered for the ZF BP 210 and BP 230 transmission series. It is a direct replacement for units found in the following ZF model families, which share the same bolt pattern and hydraulic architecture:
- ZF WG180 (Variants with BP 210/230 core)
- ZF WG200 (Variants with BP 210/230 core)
- ZF 4 HP 210 (Older generation, cross-compatible with BASICPOWER upgrade)
- ZF 4 HP 230 (Older generation, cross-compatible with BASICPOWER upgrade)
Note: Always verify the bell housing pattern and torque converter pilot diameter against your specific vehicle chassis. This assembly does not include the external oil cooler lines or electronic control module (ECM) if applicable.
