Crankshaft position sensor suitable for a range of Mazda vehicles. The crankshaft position sensor monitors the position and rotational speed of the crankshaft and sends this information to the engine ECU, allowing accurate control of ignition timing and fuel injection.
A faulty crankshaft position sensor can cause symptoms including difficult starting, intermittent stalling, engine misfires, poor performance, loss of power, engine warning lights or a crank/no-start condition.
This is a direct replacement 3-pin aftermarket sensor with twin mounting points as pictured.
Note: This is an aftermarket replacement part
Fitment Guide
OEM number L3G2-18-221 is used across a range of Mazda applications, including selected:
- Mazda 3 – BK / BL
- Mazda 5 / Premacy – CR / CW
- Mazda 6 / Atenza – GG / GY / GH
- Mazda CX-7 – ER
- Mazda MX-5 / Roadster – NC
Common applications include selected 2.0L, 2.3L and 2.5L Mazda petrol engines. The Ford cross reference 6M86C315 / 6M86-6C315 is also associated with this sensor.
Please confirm the OEM number from your original part before ordering rather than relying on vehicle model alone.
OEM / Reference Part Numbers
- L3G2-18-221
- L3G218221
- 6M86-6C315
- 6M866C315
- L3K9-18-221A
- L3K918221A
Product Details
- Part Type: Crankshaft Position Sensor
- Condition: Brand New
- Fitment Type: Direct Replacement
- Connector: 3 Pin
- Twin mounting points
- Aftermarket replacement part
Before Ordering
Please confirm that L3G2-18-221, 6M866C315 or one of the reference numbers above matches the part required for your vehicle.
We recommend comparing the 3-pin electrical connector, mounting points and sensor body shown in the photos with your existing sensor before ordering.
Returns and Refunds
Faulty or incorrectly described products can be returned for replacement or refund in accordance with our standard returns policy. Please ensure compatibility before ordering, as refunds are not provided for incorrect purchases or change of mind. Exchanges may be available at our discretion. No labour or installation costs are covered.
About Parts Online NZ
Parts Online NZ is New Zealand owned and operated. All items are stocked here in New Zealand and ship the same or next business day. We specialise in affordable replacement automotive sensors, electrical components and other hard-to-find vehicle parts, with fast nationwide delivery.