Abstract: A fire prevention and suppression assembly includes a cylindrical body having a sidewall, with spaced arcuate slots formed in the sidewall, and threaded first and second ends. The assembly includes stabilizer feet affixed to the cylindrical body diametrically opposite the slots. An end cap is threaded onto one of the ends. The slots are positioned in a predetermined pattern that disperses water evenly across a surface. A method of preventing and suppressing fire includes coupling a water source hose to the assembly; moving the assembly underneath an electric vehicle with the slots oriented toward the undercarriage; and pressurizing the water source hose to continuously move water through the slots against the undercarriage for a selected time.