Spectra S10555 Engine Crankshaft Position Sensor

Engine Crankshaft Position Sensor for Mazda Protege

Spectra S10555 is an engine crankshaft position sensor for 2001-2003 Mazda Protege applications. It monitors crankshaft position and engine speed data used by the ignition system to maintain proper timing and RPM signal input.

• Direct-fit crankshaft position sensor for Mazda Protege models
• Supports ignition timing control and engine RPM detection
• Helps replace a failed sensor that can disrupt engine speed signal input
• Compatible with 2001-2003 Mazda Protege, N/A
• Part number S10555 for application matching

How This Sensor Works

The crankshaft position sensor is a key engine management input that reports crankshaft movement to the ignition system. On 2001-2003 Mazda Protege vehicles, this signal helps the engine control system determine ignition timing and relative engine speed without manual distributor timing. Spectra S10555 is built for the same application as OE-style replacements and cross-references Standard Ignition PC443 for the same application.

Common Problems It Can Help Resolve

• Hard starting caused by missing crankshaft speed signal
• Intermittent stalling from unstable engine position data
• Misfire or timing-related drivability concerns
• No-start condition tied to crankshaft sensor failure
• Erratic RPM readings at the engine control system

Installation Notes

Verify connector style, mounting location, and engine application before installation. Compare the old sensor to Spectra S10555 and confirm fitment for your 2001-2003 Mazda Protege, N/A. After installation, clear any stored diagnostic trouble codes and confirm stable engine speed and ignition timing signals.

Quality Assurance

Spectra supplies engine management components for replacement use, and this crankshaft position sensor is engineered to meet the needs of the listed Mazda Protege applications. Part number S10555 is also referenced by 5S1823, CSS955, SU4968, SU5783, ZM0118221, ZM0118221A, and Standard Ignition PC443.