Spectra S10401 Engine Crankshaft Position Sensor

Engine Crankshaft Position Sensor for Mazda

The Spectra S10401 engine crankshaft position sensor monitors crankshaft speed and position to support ignition timing and engine RPM signal accuracy. It is a direct-fit style replacement for select Mazda applications, including Mazda CX-5, Mazda CX-50, Mazda 3, Mazda CX-3, Mazda CX-30, Mazda CX-9, MX-5 Miata, and Mazda 6 models.

Built with a black/white sensor body, 3 male blade terminals, and a single male blade connector, the Spectra S10401 is a practical replacement for diagnosing crankshaft signal faults on Mazda engines. The S10401 also cross-references Delphi SS11990 and Standard Ignition PC999 for the same application.

Key Features

• Engine crankshaft position sensor for ignition timing and RPM signal monitoring
• Black/white sensor body with 18.0000 sensor body diameter
• 1 connector, blade style, male connector gender
• 3 terminals with blade terminal type and male terminal gender
• 1 mounting hole for OE-style installation points
• No wiring harness included
• No mounting bracket included
• Cross-references Spectra S10401, Delphi SS11990, and Standard Ignition PC999 applications

Detailed Description

The Spectra S10401 crankshaft position sensor is used to report crankshaft position and engine speed data to the ignition and engine management system. That signal helps the vehicle set ignition timing electronically, reducing the need for manual distributor timing on supported engines. For Mazda CX-5, Mazda 3, Mazda CX-30, and related models, accurate crankshaft signal input is essential for stable starting, timing control, and consistent engine operation.

Fits 2013-2024 Mazda CX-5, N/A. Fits 2023-2024 Mazda CX-50, N/A. Fits 2012-2023 Mazda 3, N/A. Fits 2012-2023 Mazda 3 Sport, N/A. Fits 2016-2023 Mazda CX-3, N/A. Fits 2020-2023 Mazda CX-30, N/A. Fits 2016-2023 Mazda CX-9, N/A. Fits 2016-2023 Mazda MX-5, N/A. Fits 2016-2023 Mazda MX-5 Miata, N/A. Fits 2014-2021 Mazda 6, N/A. Fits 2016-2017 Mazda 5, N/A.

Common Issues This Sensor May Address

• Crankshaft position sensor fault codes
• Hard starting or intermittent no-start conditions
• Erratic engine RPM readings
• Ignition timing signal loss
• Stalling or rough engine operation related to crank signal errors

Installation Notes and Tips

Verify connector shape, terminal count, and mounting style against the original sensor before installation. Inspect the connector and wiring for corrosion, bent terminals, or heat damage, since signal issues can originate in the harness as well as the sensor. Confirm the sensor seats correctly at the mounting point and that the electrical connection is fully engaged.

Quality Assurance

Spectra manufactures this crankshaft position sensor as an OE-style replacement part for supported Mazda applications. The S10401 is built to match the listed connector and terminal configuration for straightforward replacement on the specified vehicles.