Engine Coolant Curved Radiator Hose (70540) by Dayco®. Position: Lower. Hose Type: Single I.D. Hose. Contains Heat Shield: No. Contains Protective Sleeve: No. Replace your cracked, spongy, worn out, or damaged radiator hose with this Dayco product manufactured to meet the highest standards required for OEM hose replacements. To ensure maximum strength and burst resistance for the life of the hose, its inner base tube is reinforced with knitted rayon.