Overview
This genuine OEM ZF 4681.101.015 transmission housing serves as the primary structural casing for select heavy-duty ZF drivetrains, specifically within the BP 210 and BP 230 series. As the central enclosure, it houses critical rotating assemblies, including the main shaft, planetary gears, and clutch packs, while maintaining precise alignment under extreme torque loads. The SKU 4681.101.015 is machined to exact factory tolerances to ensure proper oil circulation and pressure retention. Without this component, the transmission cannot maintain internal integrity, making it a mandatory replacement when cracks or distortion occur.
Symptoms of Failure
When the ZF 4681.101.015 housing deteriorates, operators often encounter distinct operational issues. Recognizing these signs early prevents catastrophic drivetrain damage.
- Persistent oil seepage from bell housing or mating flanges: Hairline fractures or porosity in the casting allow transmission fluid to escape, leading to low lubricant levels and eventual gear overheating.
- Abnormal gear engagement noise or grinding: A warped housing misaligns bearing bores, causing gear teeth to contact improperly under load, producing a distinct metallic chatter during shifts.
- Vibration during acceleration or deceleration: Structural fatigue in the housing reduces damping capacity, transmitting driveline vibrations directly into the chassis.
- Intermittent loss of hydraulic pressure: Internal cracks disrupt oil galleries, causing erratic clutch pack engagement and delayed shift response.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4681.101.015 |
| Material | High-grade aluminum alloy (A356-T6) |
| Overall Length | 620 mm |
| Overall Width | 410 mm |
| Overall Height | 380 mm |
| Dry Weight | 28.5 kg (62.8 lbs) |
| OEM Reference | ZF 4681.101.015 |
| Bolt Torque Spec | 85 Nm (62.7 lb-ft) |
Compatibility
This housing is engineered for specific ZF transmission families that share the BP 210 and BP 230 architecture. It is a direct fit for the following models, provided the original housing matches the bolt pattern and oil channel layout:
- ZF WG180 – All variants (WG180, WG180C, WG180E)
- ZF WG200 – Standard and high-torque versions
- ZF BP 210 – Series 1 and Series 2
- ZF BP 230 – All sub-variants
- ZF 6HP – Select 6-speed heavy-duty applications (verify casting number)
Always cross-reference your existing housing casting number with 4681.101.015 before installation. This part does not fit ZF 4HP or 5HP series transmissions without adapter modifications.
