(Extended Length) LS Coolant / Water Temperature Sensor Sending Unit Adapter LS1

In stock
Coolant Temperature Sensor Adapter Extended Length 3/8"NPT Water LS Engine Swap LS1 LSX LS3

WARNING - This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov


ALUMINUM: Most of the aluminum alloys used today contain some level of lead, usually less than .1%. Lead is known to the state of California to cause cancer and reproductive harm. Most aluminum alloys are physiologically inert in their solid form, and the lead is contained within, however user-generated dust and/or fumes may pose a hazard if inhaled or ingested. Heating beyond a certain temperature may also provide avenues for exposure.


STEEL (steel bolts):  Steel is an iron alloy with several metals including Nickel and Chromium. Both Nickel and Chromium are known to the State of California to cause cancer and reproductive harm, respectfully. This warning applies to stainless steels as well.

Extended Length Adapter

Male M12-1.5 to Female 3/8" NPT 


  • This adapts SBC/BBC coolant temperature sensors to fit into LS series cylinder heads
  • Fits: all GM LS Series Engines
  • Made in Wichita, KS from aerospace grade, USA billet aluminum
  • Includes: 1 adapter and 1 sealing washer

Will fit sensors with 1.7" length, measured from probe tip to the outer edge of adapter. Most aftermarket gauges will use a 3/8" npt thread adapter (usually included with gauge)



Includes: 1 aluminum adapter, 1 sealing washer

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