Overview
The ZF 4681.054.044 4 BP 210 BASICPOWER Transmission Assembly is a complete, factory-matched unit designed for direct replacement in heavy-duty driveline applications. This assembly integrates the hydraulic control system, planetary gear sets, and clutch packs into a single, pre-assembled module, eliminating the need for complex field rebuilding. As a core component of the BP 210 and BP 230 series, this SKU 4681.054.044 delivers the robust torque capacity and shift quality required for off-highway vehicles, material handlers, and industrial machinery. The “BASICPOWER” designation indicates a standardized output configuration optimized for reliability in demanding cyclic operations.
Symptoms of Failure
When the ZF 4681.054.044 assembly begins to degrade, operators typically notice specific operational deficits. Recognizing these signs early can prevent secondary damage to the torque converter and driveline.
- Delayed or harsh engagement between forward and reverse: A worn clutch pack or degraded valve body within the assembly causes a noticeable lag or a jarring “clunk” when shifting direction, often accompanied by a momentary loss of tractive effort.
- Intermittent gear slipping under load: The transmission may momentarily lose power delivery when climbing grades or pushing heavy loads, indicated by a sudden engine RPM flare without a corresponding increase in vehicle speed. This points to internal hydraulic pressure loss.
- External oil seepage from the main housing joint: Cracks or gasket failure in the assembly housing can lead to ATF weeping around the bell housing or the PTO mounting pad. Look for dark, oily residue accumulating on the lower pan area.
- Unusual whining or grinding noises in neutral: Worn bearings or planetary gear damage inside the assembly produce a metallic whine that changes pitch with engine RPM, even when the vehicle is stationary and not in gear.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4681.054.044 |
| Assembly Type | 4 BP 210 BASICPOWER (Complete Unit) |
| Dry Weight (Approx.) | 185 kg (408 lbs) |
| Overall Length (Input to Output Flange) | 620 mm |
| Housing Material | High-Strength Aluminum Alloy (Die-Cast) |
| Clutch Pack Quantity | 4 (Forward/Reverse/High/Low) |
| Max Input Torque (Estimated) | 2,100 Nm |
| Fluid Capacity (Assembly Only) | 12.5 Liters |
Compatibility
This ZF 4681.054.044 assembly is engineered for the BP 210 and BP 230 transmission series. It is a direct fit for the following ZF model variants commonly found in telehandlers, wheel loaders, and industrial tractors:
- ZF WG180 Series: Specifically the WG180 and WG181 models with 4-speed powershift configurations.
- ZF WG200 Series: Compatible with WG200 and WG210 variants that utilize the BP 210 hydraulic control architecture.
- ZF 4 BP 210 / 4 BP 230: Direct replacement for all standard BASICPOWER units within these series, including those with integrated parking brake provisions.
- Select 3 BP 200 Variants: While primarily designed for 4-speed units, this assembly can be adapted to certain 3-speed applications with output flange modifications (verify input shaft spline count).
Always cross-reference your existing transmission’s serial number and housing casting marks to confirm compatibility before installation.
