Hyundai Accent Peace be upon you O2 sensor connector, an alternative to the catalytic converter. A connector that fits the O2 sensor. It improves the sensor's reading as if the muffler is present. In case of damage, removal, or modification of the catalytic converter, the Check Engine light will turn on. If the Check Engine light appears, perform a computer scan and confirm the error code you have: P0420,P0421,P0422,P0423,P0424 P0430,P0431,P0432,P0433,P0434 And due to the Check Engine light appearing, these problems occur: 1- Very high fuel consumption 2- Delayed starting 3- Weak torque 4- Shaking, sputtering, and muffling 5- Remote start fails 6- Traction control fails 7- 4WD fails The connector improves the sensor's reading so that the Check Engine light turns off and these problems are resolved. The price for the straight connector is 70 SAR. And the price for the L-shaped connector is 110 SAR.