Cooling System Basics

Cooling System

If your vehicle is going to keep running strong, it’s essential to keep your cooling system healthy; it is the temperature regulator for the engine, keeping things cool in the summer and warm in the winter. A properly maintained cooling system will help your vehicle run at full efficiency.

Signs and Symptoms
Because the cooling system affects everything from your defroster to fuel mileage, routine maintenance will help you extend the life of your engine and avoid costly repairs. Here are some problems to keep an eye out for:

  • Overheating: This is the most common cooling system failure. Possible causes include: water pump failure, cooling fan malfunction, thermostat failure, belt failure, restricted air flow to the radiator, and low coolant level.
  • Leaks: Antifreeze/coolant puddles are the most common indicator of this issue, but some leaks can be difficult to find. When filling your system, be sure to use the coolant specified for your vehicle. If you use Concentrate instead of 50/50 formula, use distilled water.
  • Underheating: This issue is not as common, but can be easily identified if your temperature gauge reads low or if your heater isn’t blowing warm air. This is most commonly caused by low coolant levels or thermostat failure.
  • Temperature Fluctuation: If your vehicle’s temperature is rising and falling unpredictably during operation, it’s likely your coolant level is low. When filling your system, be sure to use the coolant specified for your vehicle. If you use Concentrate instead of 50/50 formula, use distilled water.
Cooling System Components
There are several components that make up your cooling system. Murray and Import Direct offer quality replacement parts to keep you on the road. If you’re experiencing any of the issues described above, stop by your local O’Reilly Auto Parts store and let one of our Parts Professionals help get your vehicle what it needs to keep running strong.

Cooling System Components

There are several components that make up your cooling system. Murray and Import Direct offer quality components to keep you on the road.
Circulates coolant throughout the vehicle's cooling and heating systems.

Removes heat from the coolant as it circulates through the system.

Drives key components such as the water pump.

Regulates the flow of coolant to maintain proper operating temperature.

Acts as a holding tank for the vehicle's coolant.

Moves air through the radiator to assist in removing heat from the coolant.

Cooling System Selection

Find the right parts for your car.

WATER PUMPS

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VALUE PRICED
MEETS OE SPECIFICATIONS
OE FIT, LOOK AND FUNCTION
NEW OE QUALITY BEARINGS AND SEALS
UNIT IS 100% NEW
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RADIATORS

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VALUE PRICED
MEETS OE SPECIFICATIONS
OE DESIGN TANK CRIMPING
SUPERIOR SIDE TANK DESIGN
IMPROVED OIL COOLER SEAL
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RADIATOR HOSES

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VALUE PRICED
MEETS OE SPECIFICATIONS
CHEMICAL RESISTANT RUBBER COMPOUND
THICK HOSE WALL
HIGH PERFORMANCE KNIT REINFORCEMENT
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