Vibrant Performance 45 Degrees Aramid Reinforced Silicone Elbows feature tight radius bends, making them ideal for congested engine bays that are typical in late model cars. All Vibrant Performance Silicone Elbows feature High Temperature Resistant Aramid Reinforcement Fabric between each layer of silicone which allows for an impressive Operating Temperature Range of -75 Degrees F to 392 Degrees F (-60 Degrees C to 200 Degrees C). Suitable for Water, Coolant and Air service only.