Standard Ignition SC687 Automatic Transmission Output Shaft Speed Sensor

Overview of Standard Ignition SC687 Transmission Sensor

The Standard Ignition SC687 is a new automatic transmission output shaft speed sensor designed for select Subaru models. Engineered for bolt-on installation, this sensor provides reliable speed data essential for transmission control in vehicles like the Subaru Forester and Outback.

• Attachment Method: Bolt on for secure mounting
• Color/Finish: Black
• Connector Gender: Female with a rectangular plug-in design
• Number of Connectors: 1
• Mounting Bracket Included for proper fitment
• Mounting Location: On transmission with a single bolt hole
• Terminal Type: Male pins, 3 terminals total
• New part, no wiring harness or mounting hardware included

Detailed Product Description

The Standard Ignition SC687 automatic transmission output shaft speed sensor is specifically designed to monitor the rotational speed of the transmission output shaft. This sensor features a bolt mount attachment method with one bolt hole and includes a mounting bracket to ensure proper alignment on the transmission housing. The black finish and rectangular female connector with a plug-in style make it compatible with the factory wiring harnesses of Subaru vehicles such as the Ascent, Crosstrek, Impreza, Legacy, WRX, and XV Crosstrek. The sensor has three male pin terminals that provide accurate signal transmission to the vehicle’s transmission control module.

Compatible Subaru Models and Applications

• Subaru Ascent
• Subaru Crosstrek and XV Crosstrek
• Subaru Forester
• Subaru Impreza
• Subaru Legacy
• Subaru Outback
• Subaru WRX

This sensor is essential for maintaining proper transmission function and shift timing in these models.

Common Issues Addressed by SC687 Sensor

• Erratic or delayed shifting in automatic transmission
• Transmission slipping or failure to engage gears properly
• Check engine light triggered by transmission speed sensor faults
• Inaccurate speedometer readings related to transmission output
• Transmission control module errors due to faulty sensor signals

Installation Notes and Tips

Installation of the Standard Ignition SC687 sensor requires removal of the old sensor from the transmission output shaft area. The bolt-on design with a single bolt hole simplifies mounting, but note that mounting hardware is not included. Ensure the mounting bracket is properly aligned and securely fastened to avoid sensor misalignment. The sensor connects via a female rectangular plug-in connector; verify the connector fits snugly with the vehicle’s wiring harness. No wiring harness is included, so use the existing vehicle harness for connection.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications. The SC687 sensor is a new component, ensuring reliable performance and durability. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship. Refer to the product documentation or manufacturer for exact warranty terms.