Fitment: The electric window switch compatible with Kia Optima 1.6L 2.0L 2.4L L4 2016 2017 2018. Replacement for 93571D4000, 93571-D4000, 1S16481 Function: Window switch is the core component of window adjustment, includes controls for window glass down and up, electric door lock and window lock, and has the function of automatically raising and lowering the driver's side window Sturdy & durable: The window switch kit is made of PP plastic and ABS plastic, durable, heat resistant, not easy to fracture and deform, and comfortable to touch. Alloy conductor has excellent conductivity and low resistance loss Easy to install: No need for very professional installation tools, and the electrical plug is simple. After the damaged window switch is removed, plug and play Warm tips: Please confirm your oe number and car model before buying this accessory, and check the description and pictures to ensure that it is suitable for your vehicle. Because there are many versions of this switch, they have the same appearance but different internal pins Specifications: Product type: power window switch Terminal quantity: 18 pins Buttons: 6 buttons (1 auto button) Color: black Material: ABS plastic & PP plastic Structure: includes circuit boad, plug ins ports, buttons, protective case, etc Function: operated the window glass down or up, control of door lock and window lock Fitment type: direct replacement Reference matching vehicle: Compatible with Kia Optima 1.6L 2.0L 2.4L L4 2016 2017 2018 Replacement for: 93571D4000, 93571-D4000, 1S16481 Package Includes: 1 pcs front door window switch 1 pcs window switch removal tool