Keep ignition timing and fuel delivery precisely synchronized with the Standard Ignition Engine Crankshaft Position Sensor PC457. It drops in as a direct-fit replacement for the 1994-1995 BMW M3, supplying the crankshaft signal your engine management system relies on.
A crankshaft position sensor monitors the rotational position and speed of the crankshaft and reports that data to the engine control module, which uses it to schedule ignition timing and fuel injection.
- Core function: tracks crankshaft position and speed and sends the signal the ECM needs to time spark and fuel.
- Signs this part may need replacing: a no-start or hard-start condition, unexpected stalling, misfire, or hesitation — if a failed crankshaft position sensor is the cause, this replaces it.
- Direct-fit application: a direct-fit replacement for the listed 1994-1995 BMW M3.
Diagnose the underlying cause before replacing, since these symptoms can have other sources.
Interchange: 12141401890 · CSS885 · CPSA644 · CSS9084
Manufacturer part number PC457.
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does the PC457 crankshaft position sensor do?
It monitors the crankshaft's rotational position and speed, then sends that signal to the engine control module, which uses it to time ignition and fuel injection.
What vehicles does the PC457 fit?
It is a direct-fit replacement for the 1994-1995 BMW M3. Check the Buyer's Guide tab to confirm the fit for your vehicle.
What are the signs my crankshaft position sensor may be failing?
Common signs include a no-start or hard-start condition, stalling, misfire, or hesitation. Diagnose the cause first, since these symptoms can have other sources.
What interchange numbers does the PC457 replace?
It cross-references 12141401890, CSS885, CPSA644, and CSS9084. Match your original part number to confirm the correct replacement.
Will replacing this sensor fix my starting or stalling problem?
If a failed crankshaft position sensor is the cause, this replaces it. Confirm the sensor is the source of the issue by diagnosing before installing.
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