Buy OEM Mazda Part # P31E18921 (P31E-18-921, P32E-18-921, P32E18921). Ignition Knock (Detonation) Sensor. 2.5 LITER. 2.5 LITER NON TURBO. 2.5 LITER TURBO. 2019-24. 3.3 LITER. CX-3. CX-30. CX-5; 2.5L. CX-50

Knock. Sensor. KNO. Ignition (Detonation).
Ignition Knock (Detonation) Sensor.

Ignition Knock (Detonation) Sensor

Fits 3, 6, CX-3, CX-30, CX-5, CX-50, CX-9, CX-90, MX-5 Miata

2.5 LITER. 2.5 LITER NON TURBO. 2.5 LITER TURBO. 2019-24. 3.3 LITER. CX-3. CX-30. CX-5; 2.5L. CX-50. CX-9. Mazda3. Mazda6. MX-5 Miata. W/2.5 LITER TURBO. W/O 2.5 LITER TURBO.
Knock Sensor - Repair or Replace
A failed Knock Sensor will often have no noticeable symptoms beyond a check engine light or engine ping or knock, but it does cause your Mazda to operate inefficiently and produce higher emissions. Our technicians have access to manufacturer-approved repair processes and Mazda genuine parts.