Saturn Coolant Temperature Sensor - 1ATSU00020

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Vehicle Fit

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. Please ensure proper diagnosis of this item before purchasing as the item cannot be returned once installed or plugged in.

Item Condition: New

Attention California Customers:

WARNING: Cancer and Reproductive Harm -

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.

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Year Make Model Description
1991-1992Saturn SC Saturn SC Coolant Temperature Sensor
1993-2002Saturn SC1 Saturn SC1 Coolant Temperature Sensor
1993-2002Saturn SC2 Saturn SC2 Coolant Temperature Sensor
1991-2002Saturn SL Saturn SL Coolant Temperature Sensor
1991-2002Saturn SL1 Saturn SL1 Coolant Temperature Sensor
1991-2002Saturn SL2 Saturn SL2 Coolant Temperature Sensor
1993-1999Saturn SW1 Saturn SW1 Coolant Temperature Sensor
1993-2001Saturn SW2 Saturn SW2 Coolant Temperature Sensor
Only 2 left in stock
Part #: 1ATSU00020

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout