Explore Nissan Frontier Pickup Radiator Hose Top & Nissan Frontier Pickup Upper Radiator Hoses Replacement Get Nissan Frontier Pickup Upper Radiator Hoses. Maintaining the upper radiator hose in your Nissan Frontier Pickup is crucial for optimal engine performance and longevity. Regular inspection for soft spots, cracks, or bulges can alert you to the need for replacement, preventing overheating and costly repairs. To extend its lifespan, ensure the cooling system is flushed according to manufacturer recommendations and that the hose is secured away from components that could cause abrasion. When choosing a replacement hose, opt for high-quality materials like reinforced silicone or Epdm rubber, which offer durability and heat resistance. Installation is straightforward, but always make sure the hose is correctly fitted and clamped to avoid leaks and ensure efficient coolant flow. With these tips, your Frontier will be ready to tackle both the daily commute and off-road adventures.