Spectra S10503 Engine Crankshaft Position Sensor

Spectra S10503 Crankshaft Position Sensor

The Spectra S10503 engine crankshaft position sensor monitors crankshaft speed and position to support ignition timing and engine RPM signal input. It is a direct-fit replacement for select Toyota, Lexus, and Scion applications, including Tacoma, Lexus IS300, and Lexus NX300 coverage.

Key Features

• Engine crankshaft position sensor for ignition timing and RPM signal monitoring
• Helps eliminate the need for manual distributor timing
• OE-style replacement for select Toyota, Lexus, and Scion vehicles
• Cross-references Standard Ignition PC963 for the same application
• Part number: S10503

Application Coverage

• Fits 2014-2023 Toyota Tacoma, N/A
• Fits 2020-2023 Lexus IS300, N/A
• Fits 2021-2023 Lexus RC300, N/A
• Fits 2018-2021 Lexus NX300, N/A
• Fits 2018-2019 Lexus GS300, N/A
• Fits 2016-2017 Lexus IS200t, N/A
• Fits 2015-2017 Lexus NX200t, N/A
• Fits 2016-2017 Lexus RC200t, N/A
• Fits 2012-2015 Scion iQ, N/A

How It Works

The crankshaft position sensor is a critical engine management component that reports crankshaft position and rotational speed to the ignition system and engine control strategy. On vehicles such as the Toyota Tacoma and Lexus IS300, accurate sensor input supports proper timing control, stable RPM calculation, and consistent engine operation. This Spectra S10503 replacement is built for the listed fitments and matches the application requirements for those models.

Common Problems This Part Can Address

• Hard starting or extended crank time
• Intermittent stalling or engine cut-out
• Erratic tachometer or RPM signal behavior
• Check engine light related to crankshaft position sensor faults
• Ignition timing or engine speed signal errors

Installation Notes

Verify the vehicle year, make, and model before installation. Compare the original sensor connector and mounting location to the replacement part, and inspect the harness and related engine management wiring for damage before final assembly. Clear diagnostic trouble codes after installation and confirm proper engine operation.

Quality Assurance

Spectra supplies this crankshaft position sensor as an application-specific replacement for the listed Toyota, Lexus, and Scion vehicles. The part number is S10503.