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Set 4 O2 Oxygen Sensors Upstream and Downstream for Mercury
This oxygen sensor set, including 4 pieces for both upstream and downstream positions, is a high-quality replacement for the Mercury Grand Marquis, engineered to meet OEM specifications for fit, durability, and performance. The sensors monitor oxygen levels in the exhaust system, allowing the engine control module to adjust the air-fuel mixture for efficient combustion, reduced emissions, and improved fuel economy. Made from durable, heat-resistant materials, the sensors provide long-lasting reliability and consistent readings under various driving conditions. Easy to install, this set is the ideal solution for replacing worn or failing oxygen sensors, restoring proper engine performance, fuel efficiency, and emission compliance in your Mercury Grand Marquis.
