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The Gates molded heater hose for 2016–2018 Kia Optima 2.4L four‑cylinder applications is the heater inlet line that supplies hot coolant to the heater core for cabin heat. This direct-fit molded replacement is specified for the listed Optima years and engine displacement; installing the inlet hose restores proper heater core flow and HVAC performance when factory lines are worn or leaking.
Gates 16-18 Kia Optima 4-Cyl. 2.4L Heater Inlet Molded Heater Hose
