Description
Product Overview
The A-Premium Transmission Speed Sensor is engineered for automatic transmissions in Subaru Crosstrek (2016‑2017), Impreza (2012‑2016), and Legacy (2010‑2015). Constructed from high‑grade aluminum housing and a stainless‑steel sensing element, the sensor offers durability and precise speed measurement. It features a rectangular 3‑pin female connector, matching OEM part numbers 31937AA160, 31937AA161, 5S17002, and SC689, ensuring a seamless replacement without modifications.
Usage
Designed for everyday driving, this sensor accurately captures vehicle speed data for engine control units, enhancing transmission shift timing and overall drivability. Ideal for both DIY enthusiasts and professional mechanics, it fits directly into the transmission input shaft housing, requiring only basic tools. Whether navigating city traffic or highway cruising, the sensor maintains consistent performance across temperature extremes.

Why Choose Us
A-Premium stands for meticulous engineering and rigorous quality testing. Each sensor undergoes a 100‑point inspection, guaranteeing conformity to OEM standards. Our one‑year unlimited‑mileage guarantee reflects confidence in product longevity, and our dedicated support team assists with fitment verification before purchase.
Key Features
- Exact OEM fit – replaces part numbers 31937AA160/161, 5S17002, SC689
- Rectangular 3‑pin female connector for quick, tool‑free installation
- High‑strength aluminum housing with corrosion‑resistant stainless steel sensor
- Accurate speed signal improves transmission shift quality and fuel efficiency
- One‑year unlimited‑mileage warranty backed by A-Premium customer service
FAQ
Is this sensor compatible with my 2015 Impreza automatic transmission?
Is this sensor compatible with my 2015 Impreza automatic transmission?
Yes, the sensor is listed for Impreza model years 2015‑2016 with automatic transmissions. Verify the OEM part number matches 31937AA160 or 31937AA161 before ordering.
Do I need to program the sensor after installation?
No additional programming is required. The sensor provides a direct speed signal that the vehicle’s ECU reads automatically.
Can I install the sensor myself?
Installation is straightforward: remove the old sensor, align the rectangular connector, and secure it with the factory bolt. Basic hand tools are sufficient.
What warranty does A-Premium offer?
A one‑year unlimited‑mileage warranty covers any defects in materials or workmanship, with free replacement or refund.
Will this sensor affect my vehicle’s fuel economy?
By delivering accurate speed data, the sensor helps the transmission shift at optimal points, which can contribute to marginal improvements in fuel efficiency.




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