Overview
The ZF 4681.298.003 HOUSING REAR SECTION is a critical structural component engineered for the BP 210 and BP 230 series of power take-off (PTO) units. This OEM genuine part encloses the output shaft and bearing assembly, providing the necessary rigidity to withstand high torque loads while maintaining precise gear alignment. Positioned at the aft end of the transmission housing, this rear section seals the internal lubricant system and supports the PTO drive mechanism. The SKU 4681.298.003 is manufactured to ZF’s original tolerances, ensuring a direct bolt-on replacement without modifications.
Symptoms of Failure
When the ZF 4681.298.003 housing rear section degrades, operators may encounter several distinct operational issues. Recognizing these signs early can prevent costly secondary damage.
- Rear housing oil seepage or active leaks: Cracks or warping in the casting allow transmission fluid to escape, often visible as drips near the PTO output flange. This is a common long-tail search query for “ZF BP 210 oil leak at rear housing.”
- Abnormal gear whine or grinding noises: A compromised housing can no longer maintain proper bearing preload, leading to misalignment and metallic contact between gears during engagement.
- PTO engagement slipping under load: Structural flex in a fatigued rear section reduces the clamping force on the output shaft, causing intermittent power loss when driving auxiliary equipment.
- Visible cracks or impact damage near mounting bosses: Stress fractures typically develop around bolt holes or cast-in ribs, which can be detected during routine visual inspections.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4681.298.003 |
| OEM Reference | ZF 4681.298.003 |
| Material | High-grade cast iron (GGG-40) |
| Overall Length | 210 mm |
| Overall Width | 165 mm |
| Overall Height | 120 mm |
| Weight | 4.2 kg (9.3 lbs) |
| Flange Bolt Pattern | 6 x M10 on 85 mm PCD |
| Seal Bore Diameter | 72 mm |
Compatibility
This genuine ZF housing rear section is designed for specific PTO transmission families. It is a direct fit for the following models and their variants:
- ZF BP 210 Series – All standard and heavy-duty configurations (e.g., BP 210-1, BP 210-2)
- ZF BP 230 Series – Including BP 230-1 and BP 230-2 with standard output flanges
- ZF WG180 – Select models using the BP-style rear housing interface (verify casting number)
- ZF WG200 – Earlier production runs with interchangeable rear sections
For applications outside these series, cross-reference the existing housing casting number against the 4681.298.003 dimensions provided above. Always confirm bolt pattern alignment before installation.
