This coolant temperature sensor is just what you need to get your vehicle running great again!


  • Brand New Coolant Temperature Sensor
  • Replaces dealer part number: 21020104, 21025106
  • 2 Prong connection
  • Direct replacement
  • Built to strict quality control standards
This coolant temperature sensor makes a great replacement and has good value over the price of a dealer part.

Our electrical and electronic parts are subject to strict quality control testing.  Once the item has been installed or plugged in, it is no longer eligible for a refund.  The item may be eligible for replacement, only if it is found to have a manufacturing defect. Before purchasing, please ensure proper diagnosis of the failed original part is performed

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

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Vehicle Fit

  • 1991-2002 Saturn SC Coupe Coolant Temperature Sensor
  • 1991-2002 Saturn SL Sedan Coolant Temperature Sensor
  • 1993-2001 Saturn SW Wagon Coolant Temperature Sensor
Part #: 1ATSU00020

Out of Stock