For my 2004 Tundra: The oil pressure gauge was very erratic and dropped to a low level at 2100 rpm. Even with more load on the hill and in 3rd gear the pressure on the gauge would only be 1/4 and 1/2 respectively, I installed this gauge/gauge and ran the engine where it reached 3/4 of full pressure. It gets the job done and shows print I haven't seen in a while. It was easy to install. Removing the front skid plate and reinstalling it was more difficult than installing the sensor.