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Earls Oil Pressure Gauge Installation Kit - GM LS w/ 48" Long Hose

Use w/ Mechanical Oil Pressure Gauge - Includes (3) Adapters & -3 AN Speed-Seal® Stainless Braided PTFE Lined Hose Assembly - 48" Long.


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This handy kit from Earl's includes all the parts needed to install a mechanical oil pressure gauge on the GM LS engine. This kit includes the special 16mm x 1.5 adapter fitting w/ crush washer (fits oil passage at the top rear of the LS engine block), pre-made -3 AN Speed-Seal® hose assembly, and two adapters for the gauge end of the hose. Choose the kit that fits your vehicle application w/ 36", 48", or 72" long hose. This kit is ideal for engine swaps & race cars that use a mechanical oil pressure gauge w/ the GM LS engine.


  • Kit Includes Adapters & Hose for Mechanical Oil Pressure Gauge Installation w/ GM LS Series Engines
  • Includes Most Common Adapters Needed For Installation of Gauge
  • Block Adapter: -3 AN to M16 x 1.5 Aluminum w/ Black Anodized Finish (AT9919AFJERL) w/ Crush Washer
  • Pre-Made Crimped Style Speed-Seal® Hose Assembly -3 AN Straight to 90 Degree Ends
  • Gauge Adapters: -3 AN to 1/8” NPT Female Straight & 90 Degree (968703ERL & 968603ERL) Steel w/ Nickel Plating
  • Ideal for Plumbing Mechanical Oil Pressure Gauge w/ 1/8" NPT Inlet Port
  • Fits GM LS Series Engines


Adapter AN Size ( B )3 AN MALE
Adapter NPT Size ( A )1/8 NPT FEMALE
Adapter TypePlumbing Kit
Emission Code5
FinishBlack Anodized / Natural SS / Nickel
Hose Length4 Feet
Hose Size3 AN
MaterialMultiple Materials
Product TypeGauge Hose Kit
Part NumberLS0033ERL

Service Parts



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

The M16 Adapter that screws into the top rear of the block is a straight thread metric design that is sealed using the included crush washer (do not use sealant or PFTE tape on these threads).


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        Some parts are not legal for use in California or other states with similar regulations.

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