Earl's GM LS Oil Pressure Gauge Adapter Fittings - Black AT9919AFJERL

Earls Straight Male AN -3 to M16 x 1.5mm w/ Crush Washer

Part #: AT9919AFJERL

Brand: Earls


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Earl's new adapter fittings are ideal for installing an after-market oil pressure gauge on GM LS engine swaps. These fittings screws directly into the M16 x 1.5mm oil passage on the rear china wall of the GM LS engine block. Options are available to fit most after-market sending units or mechanical gauge hoses (1/8" NPT female, -3 AN male, or -4 AN male). Black anodized 2024-T8 aluminum construction. Made in the USA.

Part #: AT9919AFJERL
  • Length: 4.25"
  • Width: 3"
  • Height: 1.5"
  • Emissions Code: No
  • Prop 65: No


  • M16 x 1.5mm – Fits GM LS Series Engine Blocks
  • -3 AN Male Connection for Hose
  • Black Anodized Finish
  • 2024-T8 Aluminum – More Durable than 6061-T6
  • Simple & Easy Adapter Fitting for Installing After-Market Gauges on GM LS Engines
  • Can Also Be Used on Other M16 x 1.5mm Plumbing Applications
  • Made in the USA