Bmw 3 Series Crankshaft Sensor

Replacement crankshaft sensor — fitment, symptoms & live UK prices.

Fits Bmw 3 Series — check your reg/VIN to confirm

Crankshaft Sensor

£10–£40.

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Will it fit my Bmw 3 Series?

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 Bmw 3 Series 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 prices£10–£40.

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