Heavy-Duty Engine Stay Bolt (Part No. VG1246070080) - Original HOWO Parts

In the high-vibration environment of a heavy-duty diesel engine, the integrity of your fastening hardware is what prevents minor issues from becoming major breakdowns. The VG1246070080 Stay Bolt is a specialized fastening component within the HOWO parts catalog, designed to provide rigid support for engine-mounted accessories on Sinotruk WD615 and D12 engines.

Technical Specifications

To ensure the best performance from your VG1246070080 stay bolt, our technical team recommends:

1. Thread Cleaning: Before installation, use compressed air to clean the female threads in the engine block. Trapped oil or debris can cause "hydraulic locking," leading to inaccurate torque readings.

2. Torque Settings: Always refer to the Sinotruk service manual for the specific torque sequence. Over-tightening is a common cause of stud failure in the WD615 series.

3. Visual Inspection: During every 50,000km service, inspect stay bolts for signs of "necking" (stretching). If the bolt looks thinner in the middle, replace it immediately to avoid a roadside failure.