Proform 141-646 16" 7 Amp 2,100 CFM Reversible Electric Fan Kit with Red Chevrolet Bowtie Logo These fans help prevent overheating in stop-and-go traffic. Designed to fit the most popular cars and trucks, increases gas mileage, improves engine performance, frees the waterpump pulley for more RPM, and installs easily within minutes using simple hand tools. The 10"", 12"", 14"", and 16"" fans are reversible (mount to front or back of radiator). Ultra-thin design to fit cramped locations. Reinforced glass filled polypropylene blade and plastic housing for minimized weight.