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Oil Pressure Gauge

 Shop Oil Pressure Gauge

The oil pressure gauge helps maintain the health of your engine by alerting you if there are issues with the oil supply. With this installed in your ride, you will be informed once your engine's oil drops below the safe operating level or when its pressure gets too high. Both conditions can be dangerous for the engine, so it has to be dealt with immediately.

Is your oil pressure gauge not working? Or do you want a more stylish look for the dash by installing a custom gauge? You'd better get a new gauge as soon as possible. Here's a simple installation guide to help you save bucks by doing the task all by yourself:

What you'll need:

  • Sockets
  • Ratchet
  • Drain pan
  • Wrenches
  • Power drill
  • Screwdriver
  • Power supply wire
  • New oil pressure gauge

Step 1: Decide where to mount the gauge.

Once you get a hold of your new gauge, you can start with your installation process by deciding where to install it. An aftermarket oil pressure gauge is usually set into the vehicle's dashboard. There are also models that have it under or on top of the dash.

Tip: Mount the gauge in a place where you can easily see it while driving.

Step 2: Install the gauge's panel into the dash.

If you're thinking of installing the gauge in the dash and you didn't see any pre-drilled hole, make a hole in the dash using a power drill. The diameter of the hole should be larger by 1/8 inches than the diameter of the gauge. Then, get your screwdriver and the screws that come along with the new oil pressure gauge and install the gauge panel. The panel is important because it will make it easier for you to connect the wires.

Tip: Always wear protective eyewear when using power tools like the drill.

Step 3: Remove the oil filter sending unit.

Get the drain pan and place it underneath the oil pan. With a wrench, loosen and detach the oil drain plug from the oil pan and allow old oil to drip into the drain pan. With your ratchet and socket, remove the oil pressure sending unit. This part is cylindrical in shape and is usually positioned near the oil filter.

Tip: This is also the best time to have your oil filter replaced.

Step 4: Run the wire from the oil sending unit to the dash.

Identify the signal wire and hook it up to the sending unit. Through a grommet, run the wire in the firewall that's nearest to the gauge's mounting point. Then, run the signal wire through the pre-drilled gauge panel hole or the hole that you've created in the dashboard a while ago.

Tip: Always allow extra wire so it would be easy for you to connect it to the gauge.

Step 5: Wire the oil pressure gauge.

Get the new gauge and connect the signal wire to the corresponding post on the back of the gauge. Look for a switched 12-volt power supply nearby, such as cigarette radio, lighter, or dome light, and run the power supply wire from the switch to the gauge's power post.

You also need to route a ground wire from your vehicle's chassis to the gauge's ground post. Make sure you'll get a good ground as a poor one can give inaccurate reading or, worse, render your gauge inoperable. You can utilize an existing grommet in the vehicle's firewall. If there's none, use the power drill to create a hole in the body of the vehicle, and then run the ground wire to the chassis.

Tip: Take note of the marks in your gauge's posts as they are labeled to ensure correct wire installation.

Step 6: Mount the oil pressure gauge in place.

Install the gauge into the gauge panel on the dashboard using the mounting hardware that usually comes with it. Put back the oil pan drain plug and fill your engine with oil. Test if the gauge is now working by starting the engine.

Tip: Use only the vehicle manufacturer's recommended engine oil.