For the following years and models:

1993-2004 Jeep Grand Cherokee 4.0L L6
1996-1998 Jeep Grand Cherokee 4.0L L6
1999-2000 Jeep Grand Cherokee 4.0L L6
2004 Jeep Grand Cherokee 4.0L L6

Features:

• Brand New Thermostat Housing
• Direct Replacement
• Built to Strict Quality Control Standards

Know about the Thermostat Housing:

• The Thermostat Housing:The thermostat is a valve that controls the flow path of the coolant. It is an automatic temperature regulating device, usually containing temperature sensing components, through thermal expansion or cold contraction to open and close the flow of air, gas or liquid.
• Function:The function of the thermostat is to keep the engine from overcooling. For example, after the engine is working normally, the temperature of the engine may be too low if there is no thermostat when it is driven in winter. At this time, the engine needs to temporarily stop water non-circulation to ensure that the engine temperature is not too low.
• Location:Generally, the coolant of the water cooling system flows in from the body and flows out from the cylinder head. Therefore, the thermostat is generally installed at the water inlet where the water pump is installed. This is the junction of hot and cold water, and the most sensitive place. Its opening temperature is the temperature of the cooling water in the engine block, while its closing temperature is the temperature of a small part of the cold water that flows from the radiator through the thermostat into the cylinder block. The volume and range of its adjustment are relatively compared. It is small, so its fineness of adjustment is relatively fine, and it will not cause large fluctuations in the temperature of the engine block to make the engine run smoothly.

Matters needing attention:

1. The thermostat must be kept in good working condition, otherwise it will seriously affect the normal operation of the engine.
2. If the thermostat is turned on too late or even cannot be turned on, it will cause the engine to overheat.
3. If the engine is turned on too early, the engine warm-up time will be prolonged and the engine temperature will be too low.
4. About five minutes after the cold car starts, the coolant temperature can reach the normal temperature of 85~105 degrees.
5. If the normal operating temperature is not reached for a long time, or the temperature rises more than 110 degrees, it should be suspected whether the thermostat is malfunctioning.

Package include:

1 Pc Thermostat Housing