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Standard Ignition SC687 Automatic Transmission Output Shaft Speed Sensor
| Brand | Standard Ignition SC687 |
|---|---|
| Connector Gender | Female |
| Connector Shape | Oval |
| Connector Type | Plug In |
| Mounting Location | On Transimission |
| Mounting Type | Bolt Mount |
| Terminal Gender | Male |
| Terminal Type | Pin |
| Fits | Subaru · 47 vehicles |
Bolt-on design. Installs with a single bolt mount for a secure, straightforward fit.
Plug-in connector. Female rectangular connector with three pin terminals for a clean electrical connection.
New sensor. Fresh replacement part from Standard Ignition for dependable transmission speed sensing.
Cross-references 31937KA060 for the same application. See all 1.
Automatic Transmission Output Shaft Speed Sensor for Subaru
Standard Ignition SC687 is a new automatic transmission output shaft speed sensor built for direct mounting on the transmission. It uses a bolt-on attachment, a rectangular female plug-in connector, and a 3-pin male terminal layout for a clean OE-style connection. This SC687 sensor is listed for Subaru applications including Ascent, Impreza, Legacy, Outback, WRX, Forester, Crosstrek, and XV Crosstrek.
Key Features
- Automatic transmission output shaft speed sensor for Subaru transmission service
- Bolt-on, bolt-mount design with one bolt hole and included mounting bracket(s)
- Black finish with a rectangular female connector and 3-pin male terminals
- New replacement part with no wiring harness, dust shield, or mounting hardware included
- Mounts on the transmission for direct sensor replacement
- Cross-reference: this part cross-references 31937KA060 for the same application
Detailed Description
Standard Ignition SC687 is an automatic transmission output shaft speed sensor designed for Subaru vehicles that use a transmission-mounted speed signal. It is a direct-fit replacement for service work on models such as the 2010-2012 Subaru Legacy, 2010-2012 Subaru Outback, 2012-2016 Subaru Impreza, 2013-2014 Subaru Outback, 2013-2015 Subaru Legacy, 2015-2017 Subaru Outback, 2015-2017 Subaru WRX, 2016-2017 Subaru Crosstrek, 2016-2018 Subaru Forester, 2017-2019 Subaru Impreza, 2018-2019 Subaru Legacy, 2018-2019 Subaru Outback, 2018-2019 Subaru WRX, and 2019-2020 Subaru Ascent. It also appears in fitment for Subaru Forester and XV Crosstrek applications listed in the catalog data. The SC687 part number is a practical choice when replacing a transmission output speed sensor on Subaru automatic transmission systems.
What It Helps Address
- Erratic or missing transmission speed signal
- Transmission shifting concerns tied to output shaft speed input
- Illuminated transmission or check engine warning related to sensor faults
- Harsh, delayed, or inconsistent shift behavior caused by a failed sensor
- Diagnostic trouble codes associated with output shaft speed sensor performance
Installation Notes and Tips
Install SC687 on the transmission using the bolt-on mounting style and verify the connector matches the vehicle harness before installation. Because no wiring harness or mounting hardware is included, reuse serviceable vehicle hardware as needed and inspect the connector, terminals, and sealing surfaces before final assembly. Confirm the exact Subaru application by year, model, and transmission configuration before ordering.
Quality Assurance
Standard Ignition supplies this sensor as a new replacement component built to match the listed OE-style fitment and connector configuration for Subaru transmission service.
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2020 | Subaru | Ascent | — | 2.4L | H4 | N/A | — |
| 2019 | Subaru | Ascent | — | 2.4L | H4 | N/A | — |
| 2019 | Subaru | Impreza | — | 2.0L | H4 | N/A | — |
| 2019 | Subaru | Legacy | — | 2.5L | H4 | N/A | — |
| 2019 | Subaru | Outback | — | 2.5L | H4 | N/A | — |
| 2019 | Subaru | WRX | — | 2.0L | H4 | N/A | — |
| 2018 | Subaru | Forester | — | 2.0L | H4 | N/A | — |
| 2018 | Subaru | Impreza | — | 2.0L | H4 | N/A | — |
| 2018 | Subaru | Legacy | — | 2.5L | H4 | N/A | — |
| 2018 | Subaru | Outback | — | 2.5L | H4 | N/A | — |
| 2018 | Subaru | WRX | — | 2.0L | H4 | N/A | — |
| 2017 | Subaru | Crosstrek | — | — | — | N/A | Primary; Output Sensor |
| 2017 | Subaru | Forester | — | — | — | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2017 | Subaru | Impreza | — | 2.0L | H4 | N/A | — |
| 2017 | Subaru | Outback | — | 2.5L | H4 | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2017 | Subaru | Outback | — | 3.6L | H6 | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2017 | Subaru | WRX | — | — | — | N/A | Output Sensor |
| 2016 | Subaru | Crosstrek | — | — | — | N/A | Primary; Output Sensor |
| 2016 | Subaru | Forester | — | — | — | N/A | Primary; Output Sensor |
| 2016 | Subaru | Impreza | — | — | — | N/A | Primary; Output Sensor |
| 2016 | Subaru | Outback | — | — | — | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2016 | Subaru | WRX | — | — | — | N/A | Output Sensor |
| 2015 | Subaru | Forester | — | — | — | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2015 | Subaru | Impreza | — | — | — | N/A | Primary; Output Sensor |
| 2015 | Subaru | Legacy | — | — | — | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2015 | Subaru | Outback | — | 3.6L | H6 | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2015 | Subaru | Outback | — | 2.5L | H4 | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2015 | Subaru | WRX | — | — | — | N/A | Output Sensor |
| 2015 | Subaru | XV Crosstrek | — | 2.0L | H4 | N/A | — |
| 2014 | Subaru | Forester | — | — | — | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2014 | Subaru | Impreza | — | — | — | N/A | Primary; Output Sensor |
| 2014 | Subaru | Legacy | — | — | — | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2014 | Subaru | Outback | — | 2.5L | H4 | N/A | Output Sensor |
| 2014 | Subaru | Outback | — | 3.6L | H6 | N/A | Output Sensor |
| 2014 | Subaru | XV Crosstrek | — | 2.0L | H4 | N/A | — |
| 2013 | Subaru | Impreza | — | — | — | N/A | Primary; Output Sensor |
| 2013 | Subaru | Legacy | — | — | — | N/A | Primary application for specific vehicle models ~ Idle Air Control Valve |
| 2013 | Subaru | Outback | — | 3.6L | H6 | N/A | Output Sensor |
| 2013 | Subaru | Outback | — | 2.5L | H4 | N/A | Output Sensor |
| 2013 | Subaru | XV Crosstrek | — | 2.0L | H4 | N/A | — |
| 2012 | Subaru | Impreza | — | — | — | N/A | Primary; Output Sensor |
| 2012 | Subaru | Legacy | Automatic CVT | — | — | N/A | — |
| 2012 | Subaru | Outback | Automatic CVT | — | — | N/A | — |
| 2011 | Subaru | Legacy | Automatic CVT | — | — | N/A | — |
| 2011 | Subaru | Outback | Automatic CVT | — | — | N/A | — |
| 2010 | Subaru | Legacy | Automatic CVT | — | — | N/A | — |
| 2010 | Subaru | Outback | Automatic CVT | — | — | N/A | — |
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