Silverado 4000 Outboard Fuel Line is resistant to ethanol blended fuels. This hose is EPA and CARB=compliant. Silverado 4000 has a THV barrier layer to prevent permeation, polyester reinforcement for strength and a weather and UV-resistant CPE cover. The gray color keeps hose cooler and helps prevent vapor lock. This hose is for above-deck primer bulb applications and is not fire-retardant. 25' length. Sierra Part #116-337-0565. | 5/16" Silverado 4000 Outboard Fuel Line, Part #116-337-0565 in Grey