How to check and replace a thermostat in a cooling system on Saturn LS and LS1?

Before replacing the thermostat, inspect the coolant level, drive belt tension, and temperature gauge operation. In 2004 models, remove the exhaust manifold heat shield, drain the coolant, remove the thermostat cover, and replace the thermostat. For V6 models, remove the intake manifold, and disconnect the radiator hose.

Genuine Saturn LS1 Thermostat

Engine Coolant Thermostat

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Saturn LS1 Thermostat Assembly, Engine Coolant
Part Number: 12622410
$77.07 MSRP: $156.38
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Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Replaces: 21018811, 55350941, 90537453, 12615097
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000 Saturn LS1 | LS, LS1, LS2, LW1, LW2 | 4 Cyl 2.2L
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Saturn LS1 Housing Asm,Engine Coolant Thermostat
Part Number: 90537819
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Inlet Assembly
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000 Saturn LS1 | LS, LS1, LS2, LW1, LW2 | 4 Cyl 2.2L

Saturn LS1 Thermostat

Another major installed part of Saturn LS1 vehicles is the Thermostat, which is usually found close to the Radiator. The principal role applied to the engine where it is inserted is to protect it from overheating, thus achieving optimal performance. Thermostats are categorized as closed-loop control devices because they are able to enable the measurement of a setpoint temperature and, in turn, permit the regulation of the flow of heaters and cooled fluids. In automotive the two categories of mechanical thermostats that are deployed in engines consist of bimetallic strips and wax pellets. These thermostats work through the mechanics of expanding and contracting from heat with the intention of regulating the temperature optimally for the improved efficiency of Saturn LS1 vehicles.

Each OEM Saturn LS1 Thermostat we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Saturn LS1 Thermostat Parts Questions & Experts Answers

Thermostat Assembly, Engine Coolant
12622410
Q: How to check and replace a thermostat in a cooling system on Saturn LS and LS1?
A: Before replacing the thermostat, inspect the coolant level, drive belt tension, and temperature gauge operation. In 2004 models, remove the exhaust manifold heat shield, drain the coolant, remove the thermostat cover, and replace the thermostat. For V6 models, remove the intake manifold, and disconnect the radiator hose.