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GATES 33347  
$42.79
Price
$0.00
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+ Sold in packs of 1x1
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$42.79
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GATES 33347 Specifications
DesignSide By-Pass
Flange Height (IN)1.5
Flange Thickness (IN).06
Gasket Quantity0
Height (IN)3
Height Between Flanges (in)1.5
Installation Tool IncludedNo
Jiggle Pin Check Valve Quantity2
Jiggle Pin Weep HoleYes
MaterialStainless Steel, Copper, Brass
Seal Quantity1
Seal TypeO-Ring
Sealing Flange Outside Diameter (IN)3.53
Start to Open Temperature (C)77
Start to Open Temperature (F)170
TypeHeavy-Duty Thermostat
Green Stripe Heavy-Duty Engine Coolant Thermostat; 170º Side By-Pass (3 17/32" x 1 1/16" x 1 7/16") w/Jiggle Pin, Seal

Quality controlled factory calibration assures accurate heat control under extreme variations in temperature, load and engine vibrations. Approved for marine applications.

  • Heavy-gauge brass and stainless steel with positive piston heat motor.
  • Available in Choke type, Top By-Pass, Bottom By-Pass, Side By-Pass, Normally Open and other types to meet heavy-duty cooling system designs.

Note: Seal should always be changed when new thermostat is installed.

Which Thermostat Is Right For You?

Type Lifespan Flow Rate Precise Temperature Control Fail-Safe Engine Protection
Economy
Standard Replacement
★★ ★★
Performance
★★ ★★ ★★
Heavy Duty ★★★ ★★ ★★★
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

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
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.
Additional Resources

Understanding Coolant Technology and Selection

Attention California Customers - Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

OEM / Interchange Numbers: 12301455, 657GC225P2, 657GC226P2, 657GC227P2, 657GC228P2

GATES Warranty Information:
Limited Lifetime
Warranty Details