Sierra Silverado 4000 5/16″ Fuel LineThe Silverado 4000 fuel line is the best B1 fuel line in the market place.The Silverado hose has a small O.D., is extremely flexible and easy to clamp.Fuel Line is resistant to ethanol blended fuels and the gray color keeps hose cooler and helps prevent vapor lock.For strength and a weather and UV resistant CPE cover, Polyester reinforcement has it covered.Features:THV500 barrier layer – prevents permeationNitrile jacketPolyester reinforcementCPE coverEPA and CARB compliantSpecifications:I.D.:5/16″ or 7.9mmO.D.:1/2″ or 12.75mmWt. “C”:7For above deck primer bulb applications, and is not fire retardant.Frequently Asked QuestionsWhat is the Sierra Silverado 4000 5/16″ Fuel Line used for?The Sierra Silverado 4000 5/16″ Fuel Line is a B1 fuel line designed for above-deck primer bulb applications. It features a flexible construction with a THV500 barrier layer, nitrile jacket, polyester reinforcement, and CPE cover.What are the dimensions of the Sierra Silverado 4000 5/16″ Fuel Line?The Sierra Silverado 4000 5/16″ Fuel Line has a 5/16-inch (7.9 mm) inside diameter and a 1/2-inch (12.75 mm) outside diameter. Its listed weight specification is 7.Is the Sierra Silverado 4000 5/16″ Fuel Line resistant to ethanol blended fuels?Yes. The Sierra Silverado 4000 5/16″ Fuel Line is described as resistant to ethanol blended fuels. It is also listed as EPA and CARB compliant.What materials are used in the Sierra Silverado 4000 5/16″ Fuel Line?The Sierra Silverado 4000 5/16″ Fuel Line features a THV500 barrier layer, nitrile jacket, polyester reinforcement, and CPE cover. The THV500 barrier layer is specified to help prevent permeation.What are the benefits of the Sierra Silverado 4000 5/16″ Fuel Line’s gray color?The gray color of the Sierra Silverado 4000 5/16″ Fuel Line helps keep the hose cooler and helps prevent vapor lock, according to the product description.Can the Sierra Silverado 4000 5/16″ Fuel Line be used for fire-retardant applications?No. The Sierra Silverado 4000 5/16″ Fuel Line is specifically identified as not fire retardant. It is intended for above-deck primer bulb applications.//