JEGS Liquid-Filled Engine Thermometer

Liquid Asset

The JEGS liquid-filled engine thermometers offer a screw-in style gauge that will provide precise readings wherever they’re located. Covering a temperature range of 0-250 degrees, these gauges are available with either 1.400 in. and 2 1/8 in. diameter faces. By being liquid-filled, these units are protected from engine vibration and eliminate needle bounce. Be prepared for when you need an accurate temperature reading when tuning to get the most from your engine.

jegs oil gauge

The JEGS 41424 engine thermometer provides a quick temperature reference when working in the engine bay. Rather than relying on your coolant temperature, this gauge lets you get precise readings based on where it’s located. Some potential locations include cylinder heads, intake manifolds, and transmissions.


  • Liquid filled to absorb vibrations, stabilize needle, and prevent damage to the gauge
  • Tighten with a 17mm wrench
  • Dimensions: 2.370 in. L x 1.400 in. D (gauge face)
  • Probe dimensions: 1 in. L x 1/4 in. D
  • Thread dimensions: 3/8 in. NPT x 0.572 in. L


JEGS High Performance logo


JEGS High Performance






(800) 345-4545


751 E 11th Ave.

Columbus, OH 43211

ABOUT JEGS High Performance®

JEGS High Performance sells performance auto parts, aftermarket accessories, tools, and race apparel. JEGS was founded by Jeg Coughlin Sr. in 1960 as a small speed shop. JEGS is still family owned and operated, but has expanded to include a massive 250,000-square-foot warehouse, approximately 350 employees, two mail-order facilites, a retail store and a race team (Team JEGS). Team JEGS is currently one the most successful teams in U.S. drag racing, with more than 100 victories at the national, divisional and local levels. And JEGS Foundation Racing for Cancer Research program has raised several million dollars.