Carquest Radiator, 4113605
In stock
$161.99
Listed as compatible with this vehicle by the retailer feed.
Check price2018 Kia Optima Radiators
3 products listed for this model year in the retailer catalog. Check engine and trim details before ordering.
Carquest Radiator, 4113831
In stock
$206.99
Listed as compatible with this vehicle by the retailer feed.
Check price
Carquest Radiator, 813603
In stock
$258.99
Listed as compatible with this vehicle by the retailer feed.
Check price
This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.