Particulate Matter Sensor For GM 55509275 0281007879/880 1277023548 921284924 PM2.1

PM Sensor for Chevrolet Express, Equinox 1.6L Diesel (2018-2019). Also fits other GM diesel vehicles. OE: 55509275, 0281007879/880, 1277023548. Bosch Particulate Matter sensor for diesel exhaust monitoring.