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LS Engine Swap M16 1.5 Adapter to 1/8 NPT Oil Pressure Sensor Gauge LS1 LSX LS3

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Male M16-1.5 to Female 1/8"-27 NPT Adapter

This adapter installs most commonly in the top-rear, or front-driver side of the engine block to access pressurized oil of the engine. Seals to the block with a sealing washer.

  • 1/8" NPT taper pipe thread port in the rear of the fitting allows for common sensors or plumbing fittings.
  • Compatible with: all GM LS Series Engines
  • Oil Pressure Sensor Adapter
  • Includes: 1 aluminum adapter, 1 sealing washer
  • Made in Wichita, Kansas from aerospace grade, USA produced, billet aluminum

More Information

Manufacturer Part Number 551172
UPC 656729842867
Weight 0.180000
ICT Manufacturer ICT Billet
United States United States
Length Inches 2
Width Inches 1
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.