This crankshaft pulse sender is designed for the Volkswagen Passat B4 equipped with the 1.9 TDi engine in 90 bhp versions (engine codes AHH and AHU) and 110 bhp versions (engine codes AFN and AVG). This sensor transmits crankshaft position and speed information to the engine control unit, essential for proper fuel injection and ignition operation. Its replacement is part of a restoration or careful maintenance of a classic vehicle, where the reliability of electronic components is just as important as that of mechanical parts. Opting for a new part guarantees the accuracy of transmitted signals and proper engine behaviour on a daily basis.