EN ▾ Request a part

MPN P31E18921 — auto parts

We have 2 genuine used OEM parts matching manufacturer part number (MPN) P31E18921 for Mazda (knock sensor) in stock. Each part is removed from a real vehicle, photographed as the exact item you receive, and fitment-checked. Free 30-day returns · fast quote by phone or message.

manufacturer part number (MPN): P31E18921 · 2 parts
2017-2021 MAZDA CX-5 CX-9 Ignition Knock Detonation Sensor P31E18921 OEM ⚡ In stock
2017-2021 MAZDA CX-5 CX-9 Ignition Knock Detonation Sensor P31E18921 OEM ⚡
Mazda CX-5 2018
$28.07
Free shipping · free local pickup
2020 - 2023 MAZDA 3 6 CX-30 CX-5 CX-50 CX-9 2.5L ENGINE MOTOR KNOCK SENSOR In stock
2020 - 2023 MAZDA 3 6 CX-30 CX-5 CX-50 CX-9 2.5L ENGINE MOTOR KNOCK SENSOR
$27.56
Free shipping · free local pickup

Related: Mazda parts

Numbers like P31E18921 identify interchangeable parts across vehicles. Can't find the exact fit? Send us the number and we'll match it fast.