Why a starter housing keeps cracking?

A starter housing can keep cracking due to several factors, including thermal stress from temperature fluctuations, material fatigue from vibration, and poor manufacturing quality or design flaws. If the housing is made from low-quality materials, it may not withstand the operational stresses over time. Additionally, improper installation or misalignment during assembly can exacerbate stress points, leading to cracks. Regular maintenance and using high-quality components can help mitigate these issues.