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LT Gen V M28 to 1/8" NPT Coolant Temperature Sensor Adapter LT1 LT4 LT5 L83 L86

In stock
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Coolant Temperature Sensor Fitting

Replaces your engine block coolant drain plug with an 1/8" NPT port (will not fit OEM LS/LT sensor thread)

  • Compatible with all GM LS & LT (Gen III, IV, & V) series engines
  • Made in Wichita, Kansas from aerospace grade, USA produced billet aluminum
  • Includes: 1 Aluminum coolant feed adapter, 1 Sealing washer

More Information

Bullet Point 1 Adapts All Gen V, LT Series, Engine Block, Coolant Plug Hole to 1/8" NPT Threaded Sensors
Manufacturer Part Number 551782-125
UPC 657814750968
Weight 0.147000
ICT Manufacturer ICT Billet
United States United States
Length Inches 2
Width Inches 2
Height Inches 1

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


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.