Mazda 3 Crankshaft Sensor
Replacement crankshaft sensor — fitment, symptoms & live UK prices.
Fits Mazda 3 — check your reg/VIN to confirm
From £12.89 · 6 live listings on eBay
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For Mazda 3 6 CX-7 2.2 GH10 2009-14 Crankshaft Position Sensor R2AA-18-221A
£12.89View ›
Crankshaft Position Sensor R2AA-18-221A Fits 2006-2014 Mazda 3 6 CX-7 2.2 R2AA
£13.43View ›
A-Premium Crankshaft Position Sensor for Mazda 3 5 6 MX-5 3 NC CX-7 ER 6M866C315
£13.49View ›
Crankshaft Position Sensor R2AA-18-221A Fits For 2006-2014 Mazda 3 6 CX-7 2.2
£13.94View ›
Car Crankshaft Position Sensor R2AA-18-221A For 2006-2014 Mazda 3 6 CX-7 2.2L
£14.05View ›
WAI CRANKSHAFT SENSOR FOR MAZDA 323 626 MX-3 MX-6 KL0118221
£15.00View ›
Will it fit my Mazda 3?
Position and connector vary by engine code — petrol and diesel versions aren't interchangeable, and some engines have both a crank and a cam sensor that get mixed up.
Tip: filter by your reg on eBay's compatibility check, or match the part number stamped on your old unit.
Signs your Mazda 3 crankshaft sensor needs replacing
- Car cranks but won't start
- Random stalling, especially when hot
- Engine warning light with a crank position code
- Rough idle or misfire
Fitting it yourself
Usually one bolt near the crank pulley/flywheel — quick if access is clear, awkward if it's buried behind ancillaries.
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Live pricesFrom £12.89
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