Hello O2 sensor spacer adapter for lead-free exhaust manifold Spacer that installs on the O2 sensor Improves sensor reading as if the leaded catalytic converter is present When the leaded catalytic converter is damaged, removed, or modified The Check Engine light will illuminate If the Check Engine light appears, scan the car computer and confirm the error code you have P0420,P0421,P0422,P0423,P0424 P0430,P0431,P0432,P0433,P0434 Due to the appearance of the Check Engine light, these problems occur: 1- Very high fuel consumption 2- Delayed engine start 3- Loss of torque 4- Engine vibration, hesitation, and stuttering 5- Remote start system disabled 6- Traction control disabled 7- 4WD system disabled The spacer improves the sensor reading to turn off the Check Engine light and resolve these issues Price 70 SAR straight version L-shaped version price 110 SAR