Crankshaft Position Sensor (CKP) > MAZDA 2 (DE) & MAZDA 3 (BK/BL) 1.3L / 1.5L / 1.6L Z-Series GASOLINE ENGINE > ZJ01-18-221 | GENUINE PART (Mazda Original Equipment)

This is a Genuine OEM Crankshaft Position Sensor (CKP Sensor), identified by the Mazda part number ZJ01-18-221. This sensor is a factory-original component designed for the reliable 1.3L, 1.5L, and 1.6L Z-Series DOHC Gasoline engines that powered the popular compact Mazda 2 and Mazda 3 models.

The CKP sensor's function is foundational for the engine's operation:

Timing Signal: The sensor reads the rotation of the crankshaft's reluctor wheel, delivering the fundamental data (engine speed and precise piston position) to the ECM. This data is used to calculate the exact timing for all combustion events.
Engine Families: This part's common application across the small displacement Z-Series engines (which share architecture with certain Ford Sigma/Duratec engines) shows the collaboration during this period.
Genuine Quality: Given the importance of timing data, using the Genuine Mazda Part ensures the sensor provides the stable and accurate signal necessary for the engine to run smoothly, prevent misfires, and avoid diagnostic trouble codes (DTCs) related to engine timing.
Fitment Assurance: The part number ZJ01-18-221 is consistently verified as the correct genuine CKP sensor for the 1.6L Mazda 3 and the 1.3L/1.5L Mazda 2 models you listed.

 
Compatible Vehicle (Primary Applications - Check VIN for confirmation of 1.3L / 1.5L / 1.6L Z-Series Engine):

Mazda 2 (DE) 1.3L / 1.5L (2007–2014)
Mazda 3 (BK/BL) 1.6L (2004–2014)
 
Part Number:

✔ ZJ01-18-221 (Crankshaft Position Sensor - Genuine Mazda OE)
Other OE Ref: ZJ01-18-221A
 
Part Type:

✔ Crankshaft Position Sensor (CKP) (Genuine Part, 1.3L / 1.5L / 1.6L Z-Series Gasoline Specific)