Overview
The ZF 4681.024.009 4 BP 190 BASICPOWER Transmission Assembly represents a complete, ready-to-install unit engineered for heavy-duty drivetrain applications. This assembly integrates the hydraulic control system, planetary gear sets, and clutch packs into a single, pre-assembled module, serving as the core power transfer component within the transmission housing. Designed as a direct replacement for the OEM 4 BP 190 BASICPOWER variant, this unit is critical for restoring full torque capacity and shift quality in ZF off-highway and commercial vehicle transmissions. The SKU 4681.024.009 is specifically configured to interface with the BP 210 and BP 230 series platforms, ensuring seamless installation without requiring additional adapters.
Symptoms of Failure
When the ZF 4681.024.009 assembly begins to degrade, operators will notice distinct operational issues. Recognizing these failure modes early can prevent catastrophic drivetrain 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 is a classic sign of internal clutch pack wear or hydraulic pressure loss.
- Intermittent gear slipping under load: If the transmission suddenly loses power during acceleration or while climbing grades, the assembly may be failing to maintain clamping force on the clutches. This symptom is frequently searched as “transmission slipping under heavy load.”
- Contaminated transmission fluid with metallic debris: Visible metal particles or a burnt smell in the oil indicate that internal bearings or friction plates within the assembly are disintegrating. This is a critical warning sign that the unit requires immediate replacement.
- External oil seepage from the bell housing: Cracks or seal failures in the assembly housing can lead to fluid leaks, often mistaken for engine oil. This symptom is commonly queried as “ZF transmission oil leak near torque converter.”
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 4681.024.009 |
| Assembly Type | Complete 4 BP 190 BASICPOWER Unit |
| Overall Length (approx.) | 480 mm |
| Dry Weight | 62 kg (136.7 lbs) |
| Primary Material | High-strength aluminum alloy housing with steel planetary gears |
| Max Input Torque Rating | 1,900 Nm (1,401 lb-ft) |
| OEM Reference | ZF 4 BP 190 BASICPOWER |
| Hydraulic Pressure Range | 14–18 bar (203–261 psi) |
Compatibility
This assembly is engineered for direct fitment into specific ZF transmission models that utilize the 4-speed BASICPOWER architecture. Verified compatibility includes the following series:
- ZF WG180 Series: All variants (WG180, WG180C, WG180D) produced after 2010.
- ZF WG200 Series: Models WG200, WG200C, and WG200D with hydraulic shift controls.
- ZF BP 210 Series: Standard and high-torque configurations (BP 210, BP 210H).
- ZF BP 230 Series: All BP 230 sub-variants, including the BP 230E and BP 230F.
- ZF 4 BP 190: Direct OEM replacement for the 4 BP 190 BASICPOWER unit.
Always verify the transmission serial number and housing casting marks before installation to ensure proper fitment. This assembly does not include the torque converter or external valve body.
