Order Honda Civic Lower Radiator Hose & Honda Civic Coolant Hose Price. Shop Honda Civic Bottom Radiator Hose. Explore Honda Civic Lower Radiator Hose Heater. Maintaining the lower radiator hose of your Honda Civic is crucial for ensuring optimal engine temperature and performance. A well-functioning hose should be firm yet pliable, without any cracks or bulges; signs of wear or a spongy feel often indicate the need for a replacement. To extend its lifespan, regularly check for leaks and corrosion, and consider using high-quality, heat-resistant hoses. When selecting a replacement, opt for options like silicone hoses for their durability and resistance to extreme temperatures. Proper installation is key?ensure a snug fit and secure clamps to prevent any future issues, keeping your Civic running smoothly.