Volvo Front Oxygen Sensor 0258007188 30637519 8670278 Direct replacement for original factory part

KLP upstream oxygen sensor directly replaces Volvo OEMs; OEM 0258007188, 30637519, 8670278; fits S40, S60, V70 and other 2000s models. Core function: monitor exhaust oxygen and feed ECU to adjust air-fuel ratio; improves combustion efficiency and reduces emissions. After installation, solves idle instability, weak acceleration, high fuel consumption; if MIL on or exhaust smoky or fuel consumption high, sensor aging suspected.