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

Returns Note:

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.

  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

5.0 / 5.0
1 Review
5 Stars
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1 Star
Coolant temp gage
As with all my purchases ,it arrived quickly solved the problem and I'm very satisfied
January 31, 2018
6 months ago
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Vehicle Fit

  • 1998-2001 Volvo C70 Coolant Temperature Sensor
  • 2000-2004 Volvo S40 Coolant Temperature Sensor
  • 2001-2002 Volvo S60 Coolant Temperature Sensor
  • 1999-2000 Volvo S70 Coolant Temperature Sensor
  • 2000-2004 Volvo V40 Coolant Temperature Sensor
  • 1999-2002 Volvo V70 Coolant Temperature Sensor

This part replaces:

  • OE # 91254631
  • Standard Motor Products TX113
Part #: 1ATSU00015

Order must be placed by 4pm ET

How-to Video:

(03:51 min)