Member Information. UnitedHealthcare Community Plan is an Arizona Medicaid health plan serving AHCCCS, KidsCare, Developmentally Disabled (DD) and Children's Rehabilitative services (CRS) members. We have more than 30 years of experience serving families throughout Arizona.
Overheating: Allowing your coolant level to run low can cause damage to your head gasket. When coolant isnât available to pull engine heat from your block and heads, the extra heat can cause expansion on your head gasket, which often results in a blown head gasket.
  Answer   The head gasket is the thin piece of gasket material that is between the engine block and the head. The head gasket fills small imperfections in the head â¦ and creates an air-tight seal between the two surfaces, note that it is a seal that is capable of enduring tremendous extremes of heat and pressure.n an extreme case, when an engine overheats the head and/or engine block can crack. But in any case, all are caused by an overheated engine.     To prevent engine overheating, inspect belts and hoses whenever you purchase fuel.