OBX Performance Reinforced Silicone Radiator Hose Set 97-98 Chevy GMC SUV 1500/2500/3500 5.7L (L31) BLUE Made of 100% pure silicone with a multi-layer nylon wrap Pressure and heat resistant from -165 to 350 Farenheit Available in a range of colors to match any engine bay color scheme Direct replacement and perfect fit for stock OEM rubber radiator hoses Check with us for availbility of blue, red, and black colors.