Designed for use on 4 and 6 cylinder or limited clearance applications. Its low pitch reduces load on the engine which equates to higher performance and improved gas mileage. Fans are available in 8,000 - 10,000 RPM ratings with stainless steel or aluminum blades. Projected width: 1.25''. Center color: star blue. Must use genuine Flex-a-lite Fan Spacer or risk voiding Flex-a-lite warranty.