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ACDelco has a Thermostat for most GM vehicles on the road today. Engineered to work with your car, truck or SUV, ACDelco Professional Thermostats come in a variety of designs and temperature ratings to meet your needs.
 Which Thermostat Is Right For You?
| Type |
Lifespan |
Flow Rate |
Precise Temperature Control |
Fail-Safe Engine Protection |
Economy
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★ |
★ |
★ |
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Standard Replacement
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★★ |
★ |
★★ |
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Performance
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★★ |
★★ |
★★ |
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| Heavy Duty |
★★★ |
★★ |
★★★ |
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Premium
|
★★ |
★ |
★★ |
★ |
 What Temperature Thermostat Do I Need? Thermostats have a “rated” temperature (such as 180F or 195F). This is the temperature the thermostat will start to open, releasing heated coolant from the engine into the radiator. The thermostat will fully open once the coolant gets another ten or fifteen degrees warmer.
| OE TEMPERATURE |
These thermostats match the OEM-specified temperature rating for the vehicle. Manufacturers recommend an OE temperature thermostat for most engines, especially for:
- Modern engines with computers that use the coolant temperature to help control the fuel, emissions and other important systems
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| ALTERNATE TEMPERATURE |
These thermostats have a temperature rating below (cooler than) the OEM-specified temperature rating for the vehicle. This option may make sense for use in:
- Modified Engines
- Performance Applications
- Older / Classic Vehicles
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 Cooling System Maintenance | Tips & Tools Without regular maintenance, cooling system components will degrade and fail prematurely, which can lead to costly engine damage. Protect your engine with simple preventative maintenance:
- Completely drain and flush the system using Cooling System Flush prior to installation. Flushing the system is critical to prevent system contamination and failure.
- Consider replacing the Radiator Hoses (and Hose Clamps) and Radiator Cap as part of routine preventative maintenance. System contamination can cause these parts to degrade and fail over time, which can lead to severe engine damage from overheating.
- Refill radiator with fresh Coolant / Antifreeze according to the volume and formula specified in your Owner's Manual. Inspect levels and condition every year.
ACDelco Quality ACDelco breaks down their premium portfolio of Original Equipment and Aftermarket parts into two tiers: GM Original Equipment and ACDelco Gold.
| GM ORIGINAL EQUIPMENT |
| GM Original Equipment parts are the true OE parts installed during production or validated by GM—designed, engineered, and tested to rigorous standards and backed by General Motors. |
| ACDELCO GOLD (PROFESSIONAL) |
| ACDelco Gold parts are the high-quality alternative to OE parts, manufactured to meet GM expectations for fit, form, and function and backed by General Motors. |
 Additional Resources
Thermostats with Bleeder Jiggle Valves
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| OEM / Interchange Numbers: 3059081 |
Closeout Inventory Warranty Information:Wholesaler Closeout items have a 30 day warranty (but still are covered by our Return Policy).ACDELCO Regular Inventory Warranty Information:Limited Lifetime: Gold Series: Belts & Hoses, Chassis Parts, Universal Joints
7 Year / Unlimited Mile: Gold Series Double Platinum Spark Plugs, Gold Series Iridium Spark Plugs
4 Year / Unlimited Mile: Iridium Improved Performance Spark Plugs
3 Years: Rapidfire Performance Spark Plugs
24 Month / Unlimited Miles: Gold Series: Air Conditioning Products, Bearings,
Brakes, Conventional Spark Plugs, Electronics, Emission Control Products, Engine Components,
Filters, Fuel Pumps, Glow Plugs, Ignition parts, Light Bulbs, Marine Spark Plugs, Other Fuel Products,
Power Steering Pumps, Rack-and-Pinion Gears, Starters and Alternators, Steering & Drive Products, Thermostats/Caps, Transmission Products, Water Pumps, Window Motors, Window Regulators, Wipers, Wires & Cables
12 Month / Unlimited Miles: Silver Series: Bearings, Brake Parts, Chassis Parts, Wipers
Warranty Details |
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