81991-35240 Ignition Lock Cylinder Switch &Cylinder Housing For 16-20 Kia Optima

Ignition Lock Cylinder Switch & Cylinder Housing for Kia Optima

The Ignition Lock Cylinder Switch & Cylinder Housing (Part Number 81991-35240) restores key start and steering lock operation for 2016–2020 Kia Optima.

Overview

This Ignition Lock Cylinder Switch & Cylinder Housing combines the key cylinder, ignition switch, and housing for 2016–2020 Kia Optima. It restores smooth key turn, reliable starter engagement, and steering lock security. Designed as a plug-and-play replacement for worn or binding factory units.

Built For Performance

• Complete assembly with lock cylinder, rotary switch, and cast housing
• Precision-machined wafers for consistent key insertion and rotation
• High-durability copper contacts ensure stable voltage to the starter circuit
• Reinforced housing resists stress cracks from steering column torque
• Pre-lubricated tumbler track provides smooth key action without binding
• Plug-and-play design matches OE connector and mounting points

Fits These Machines

• for 2016–2020 Kia Optima LX
• for 2016–2020 Kia Optima EX
• for 2016–2020 Kia Optima SX
• for 2016–2020 Kia Optima SXL

On-The-Job Use

• Replacing a jammed ignition lock that prevents key removal
• Fixing no-crank condition when key turns but engine does not start
• Repair after key breaks off in the cylinder
• Restoring function after theft damage or forced entry
• Addressing intermittent electrical contact causing stall or no-start

Specs At A Glance

Good To Know

Q: Do I need to have the new cylinder rekeyed to my existing key? A: This assembly is typically not keyed; you may need to have a locksmith transfer your original cylinder or re-pin the new cylinder to match your factory key, unless the unit is ordered as a complete set with matching key.

Q: Will replacing the ignition lock cylinder switch cause issues with the immobilizer system? A: Replacing only the mechanical lock cylinder and switch housing does not alter the transponder chip in your key, so the immobilizer system will continue to function as long as the ignition antenna ring is reinstalled correctly.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.