Pajero Oxygen Sensor MR578113 234000-8674, replace aged sensor to restore power

Mitsubishi Pajero V73/V93 and other models’ oxygen sensor MR578113 (OEM 234000-8674); uses high-temperature ceramic element and nickel-plated housing; process precision close to OEM. Real-time monitoring of exhaust oxygen to adjust air-fuel ratio; mitigates power loss and higher fuel consumption from sensor aging. Replacement requires a dedicated socket; protect threads; operate in a cold engine state to avoid heat injury.