Volvo Coolant Temperature Sensor - 1ATSU00015

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


  • Brand New Coolant Temperature Sensor
  • Sends temperature readings to the ECM
  • 2 Prong connection
  • Replaces dealer part numbers: 91254630, 91254631
  • Direct Replacement

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.

  1. step : Draining the Coolant (0:41)
    • Have a drain pan ready
    • Twist off the coolant bottle cap
    • Loosen the drain bolt with a 13mm socket and extension
    • Let a half-gallon of coolant drain
    • Twist on the coolant bottle cap
    • Tighten the drain bolt
  2. step : Removing the Engine Cover (1:31)
    • Remove the two T30 Torx screws from the engine cover
    • Undo the engine cover clips
    • Pull off the engine cover
  3. step : Removing the Thermostat (1:54)
    • Remove the two T40 bolts from he thermostat housing
    • Pull the thermostat housing aside
    • Pull out the thermostat
  4. step : Removing the Engine Coolant Temperature Sensor (2:15)
    • Unclip the engine coolant temperature (ECT) sensor wire from its bracket
    • Disconnect the ECT sensor wiring harness
    • Remove the ECT sensor with a 3/4 inch wrench
    • Pull off the ECT sensor
  5. step : Installing the New ECT Sensor (2:38)
    • Thread the new ECT into place
    • Tighten the ECT sensor with a 3/4 inch wrench
    • Connect the ECT sensor wiring harness
    • Clip the ECT sensor wire onto its bracket
  6. step : Reinstalling the Thermostat (3:01)
    • Put the thermostat into place
    • Put the thermostat housing into place
    • Insert the two T40 bolts into the thermostat housing
  7. step : Reinstalling the Engine Cover (3:17)
    • Clip the engine cover into place
    • Insert the two T30 bolts into the engine cover
  8. step : Refilling the Coolant (3:21)
    • Twist off the coolant bottle cap
    • Add coolant to the bottle with a funnel
    • Twist on the coolant bottle cap

Tools needed for replacement:

    General Tools

  • Drain Pan
  • Funnel

  • Ratchets & Related

  • Ratchet
  • Socket Extensions

  • Sockets - Metric

  • 13mm Socket

  • Torx Drivers & Sockets

  • T40 Torx Bit
  • T30 Torx Driver

  • Wrenches - SAE

  • 3/4 Inch Wrench

5.00/ 5.0
5 Stars
4 Stars
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2 Stars
1 Star
Coolant temp gage
As with all my purchases ,it arrived quickly solved the problem and Im very satisfied
January 31, 2018
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Year Make Model Description
1998-2001Volvo C70 Volvo C70 Coolant Temperature Sensor
2000-2004Volvo S40 Volvo S40 Coolant Temperature Sensor
2001-2002Volvo S60 Volvo S60 Coolant Temperature Sensor
1999-2000Volvo S70 Volvo S70 Coolant Temperature Sensor
2000-2004Volvo V40 Volvo V40 Coolant Temperature Sensor
1999-2002Volvo V70 Volvo V70 Coolant Temperature Sensor
Part #: 1ATSU00015

Order must be placed by 4pm ET
Delivery options for:

Estimated Arrival Cost

Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

Get it in: 2 - 4 Business Days

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How-to Video:

(03:51 min)