Heat is an enemy for rotaries. The RX-8 is setup to run particularly hot. This relay kit will lower the temperature that the cooling fans turn on by over 15 degrees. The installation of this kit is very easy and instructions are included. Improvements such as idle stability, better A/C performance and more can be expected.

UPDATE: This product has been superseded by recalibrating the factory ECU. Please visit our discussion on this service and its many benefits here. 

• Cooler Operating Temperature
• Better A/C at low speeds
• Longer engine life
• Works Best With Our “Oil Cooler Thermo Pellet”