Oil Galley Plug Adapter for Subaru EJ Engines

2 Reviews Write A Review
  • Free Shipping Over $50

    Free Shipping Over $50Contiguous USA

  • One Year Limited Warranty

    One Year
    Limited Warranty

  • Free In-House Support

    Free In-House Support


GlowShift’s Oil Galley Plug Adapter for Subaru EJ engines allows users to easily install an oil pressure or oil temperature gauge sensor to the engine block for accurate readings directly from the source. This adapter is machined from brass and features an M18 x 1.5 male thread with Teflon tape already attached, a female 1/8-27 NPT thread for the gauge’s sensor, and a crush washer for a tight, leak-free seal.

There are two different factory oil galley plug locations that you can replace with this adapter: the front oil galley plug or rear oil galley plug. The front plug is located to the left of the alternator and the rear plug is located between the outlet of the turbocharger and the intercooler. GlowShift includes installation instructions, free lifetime technical support and a one year limited warranty with each purchase.

  • Oil Galley Plug Adapter for Subaru EJ Engines
  • Replaces Front or Rear Factory Oil Galley Plug
  • Perfect for Installing Oil Pressure or Oil Temperature Sensors
  • M18 x 1.5 Male Thread with Teflon Tape
  • 1/8-27 NPT Female Thread
  • Crush Washer
  • Machined from Brass
  • Installation Instructions
  • Free Lifetime Technical Support
  • One Year Limited Warranty
Tech Specs
Male Thread: M18 x 1.5
Female Thread: 1/8-27 NPT
Gauge Type: Oil Pressure
Gauge Type: Oil Temperature

Includes an installation guide which is available online and included with your order. You can also visit our library of installation videos which include complete step-by-step tutorials and useful tips on how to install a wide range of GlowShift products.

Download and Print the PDF PDF Instructions View Our Help Center Help Center

Product Reviews

  • Oil Galley Plug

    Posted by Tiago on Jul 16, 2020

    Very convenient and makes the install and use of my glowshift oil pressure gauge much better. Well recommended

  • functional, simple product

    Posted by Jon G on May 02, 2020

    The machining isn't perfect but doesn't really need to be better than it is. The product fit, was straight forward to install and does not leak. The included washer appears stamped out of brass sheet and is not a crush type, but I had plenty of soft copper washers on hand and used one of those. The washer isn't a big deal at all. I also removed the teflon tape to inspect the threads before using the adapter and placed new tape on the adapter before using it. The adapter meets my need and doesn't leak. Price and shipping costs are reasonable too.