How to Install an Oil Temperature Gauge on a Harley

An oil temperature gauge is a good thing to have on your Harley-Davidson motorcycle. By monitoring the oil temperature at regular intervals you can avoid overheating and the resulting oil viscosity breakdown, which can quickly damage your engine. Harley makes it easy to install an oil temperature gauge on your bike. In fact, if you can check your oil level, you can install and use one of these gauges, as they simply replace the factory oil cap and dipstick assembly.

Things You'll Need

  • New oil tank cap and dipstick, with the built-in gauge, for your year and model bike (available at a Harley-Davidson dealer)
  • Remove the factory cap and dipstick assembly from your bike's oil tank.

  • Install the new cap/dipstick/oil temperature gauge assembly.

  • Ride the bike for a short time, then check the gauge reading to ensure it works properly.