HOP Crankshaft Position Sensor ZJ01-18-221 Compatible with Mazda M3/M2 Fiesta 09 1.5L/1.3L

HOP brand crankshaft position sensor, OEM ZJ01-18-221; fits Mazda3, Mazda2, and 2009-2011 Fiesta 1.5L and 1.3L. Mounted near crankshaft; monitors speed and position and sends signals to ECU for ignition timing and fuel injection. Installation difficulty: medium; 0.5-1 hour; ensure clearance between sensor and flywheel. If starting difficulty, weak acceleration, engine vibrations, or check engine light on, sensor signal may be abnormal and require replacement.