This reversible fan will help prevent overheating in stop-and-go traffic. Designed to fit most cars or trucks it will increases gas mileage improve engine performance and will free up the water pump pulley for more RPM.Installs in minutes with simple hand tools (mounts in front or back of radiator). Features:Ultra thin design to fit cramped locationsReinforced glass filled polypropylene bladePlastic housing for minimized weightNylon tie mounting kit includedSpecifications:4 deep2500 RPM8 amp draw1650 CFM Nominal fan size is based upon approximate overall assembly diameter.