OEM DEF AdBlue Level Sensor Sprinter 2500 3500 A3E98001871 Fits 0004707400 PumpOEM DEF AdBlue fluid level sensor assembly removed from original pump unit. This is the complete sensor module (white housing + black electronic unit) that mounts onto the DEF pump and reads fluid level inside the tank. Mercedes part number on housing: A3E98001871 Additional numbers on unit: 80017570178892 This sensor is used with newer Mercedes Benz Sprinter DEF pump assemblies, including pumps with part numbers: 0004707400000470740064000470740080 If