HomeIgnition > SensorsSpectra S10121 Engine Crankshaft Position Sensor
Part #: S10121

Spectra S10121 Engine Crankshaft Position Sensor

⚙️ 44 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Toyota and Scion, Prius C, Yaris, Prius, xA, xB, and Echo
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Reliable Engine Crankshaft Position Sensor for Toyota and Scion

The Spectra S10121 Engine Crankshaft Position Sensor is designed to provide accurate engine timing data for select Toyota and Scion models. This sensor ensures proper engine performance by monitoring the crankshaft's position and speed.

  • Compatible with Toyota Echo, Prius, Prius C, xA, xB, and Yaris models
  • OEM-quality replacement part number S10121
  • Precise crankshaft position detection for optimal engine timing
  • Durable construction for long-lasting performance
  • Direct fit sensor for straightforward installation

Product Details and Compatibility

The Spectra S10121 crankshaft position sensor is engineered to meet the specifications required by Toyota and Scion vehicles, including the Echo, Prius, Prius C, xA, xB, and Yaris. This sensor plays a critical role in engine management systems by providing real-time data to the engine control unit (ECU). Accurate crankshaft position information is essential for fuel injection timing and ignition system operation, which directly affects engine efficiency and emissions.

Common Applications and Problem Resolution

  • Helps resolve engine misfires and rough idling issues
  • Addresses difficulty starting or no-start conditions
  • Eliminates erratic engine stalling during operation
  • Prevents check engine light triggers related to crankshaft sensor faults
  • Improves overall engine performance and fuel economy

Installation Notes and Tips

Installation of the Spectra S10121 sensor requires basic mechanical skills and standard hand tools. It is recommended to disconnect the battery before beginning the replacement to avoid electrical shorts. Locate the existing crankshaft position sensor on the engine block, remove the mounting bolt, and disconnect the electrical connector. Install the new sensor by reversing the removal steps, ensuring the sensor is seated properly to maintain accurate readings.

Quality Assurance and Warranty Information

Manufactured to meet or exceed OEM standards, the Spectra S10121 sensor undergoes rigorous quality control testing to ensure reliable performance. This part is backed by a limited warranty covering defects in materials and workmanship, providing confidence in its durability and function for Toyota and Scion vehicle owners.

This part fits 44 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2021ToyotaPrius C1.5LL4N/A
2020ToyotaPrius C1.5LL4N/A
2019ToyotaPrius C1.5LL4N/A
2018ToyotaPrius C1.5LL4N/A
2018ToyotaYaris1.5LL4N/A
2017ToyotaPrius C1.5LL4N/A
2017ToyotaYaris1.5LL4N/A
2016ToyotaPrius C1.5LL4N/A
2016ToyotaYaris1.5LL4N/A
2015ToyotaPrius C1.5LL4N/A
2015ToyotaYaris1.5LL4N/A
2014ToyotaPrius C1.5LL4N/A
2014ToyotaYaris1.5LL4N/A
2013ToyotaPrius C1.5LL4N/A
2013ToyotaYaris1.5LL4N/A
2012ToyotaPrius C1.5LL4N/A
2012ToyotaYaris1.5LL4N/A
2011ToyotaYaris1.5LL4N/A
2010ToyotaYaris1.5LL4N/A
2009ToyotaPrius1.5LL4N/A
2009ToyotaYaris1.5LL4N/A
2008ToyotaPrius1.5LL4N/A
2008ToyotaYaris1.5LL4N/A
2007ToyotaPrius1.5LL4N/A
2007ToyotaYaris1.5LL4N/A
2006ScionxA1.5LL4N/A
2006ScionxB1.5LL4N/A
2006ToyotaPrius1.5LL4N/A
2006ToyotaYaris1.5LL4N/A
2005ScionxA1.5LL4N/A
2005ScionxB1.5LL4N/A
2005ToyotaEcho1.5LL4N/A
2005ToyotaPrius1.5LL4N/A
2004ScionxA1.5LL4N/A
2004ScionxB1.5LL4N/A
2004ToyotaEcho1.5LL4N/A
2004ToyotaPrius1.5LL4N/A
2003ToyotaEcho1.5LL4N/A
2003ToyotaPrius1.5LL4N/A
2002ToyotaEcho1.5LL4N/A
2002ToyotaPrius1.5LL4N/A
2001ToyotaEcho1.5LL4N/A
2001ToyotaPrius1.5LL4N/A
2000ToyotaEcho1.5LL4N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

180030719051421320145S190471507190919050459091905081909190508796051CRS1128CSS911CSS911PCSS9125PC271PC271TPCV383SS10254SU5358

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.