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Standard Ignition SC504 Automatic Transmission Output Shaft Speed Sensor
| Brand | Standard Ignition SC504 |
|---|---|
| Connector Gender | Male |
| Connector Shape | Square |
| Connector Type | Plug In |
| Mounting Location | On Transimission |
| Mounting Type | Bolt Mount |
| Terminal Gender | Female |
| Terminal Type | Blade |
| Fits | Subaru · 27 vehicles |
Bolt-on fit. Plug-in sensor with a single-bolt mount for straightforward installation.
Wiring harness included. Comes ready to connect with an integrated harness.
3-wire design. Uses a three-wire blade-terminal setup for reliable signal transfer.
Cross-references Standard Ignition SC504, 31937AA120 and SN8206 for the same application. See all 6.
Automatic Transmission Output Shaft Speed Sensor
Standard Ignition SC504 is an automatic transmission output shaft speed sensor built for direct-fit service on select Subaru applications. It uses a bolt-mount design with a single square plug-in connector and included wiring harness for a clean replacement on the transmission.
- Bolt mount installation with one mounting hole
- Single male square connector with female blade terminals
- 3-wire design with wiring harness included
- Black and silver sensor housing
- Direct replacement for select Subaru Legacy, Outback, Tribeca, and B9 Tribeca applications
Fitment Coverage
- Fits 2006-2013 Subaru Legacy, N/A
- Fits 2010-2013 Subaru Outback, N/A
- Fits 2006-2008 Subaru Outback, N/A
- Fits 2008-2012 Subaru Tribeca, N/A
- Fits 2006-2007 Subaru B9 Tribeca, N/A
Detailed Description
The Standard Ignition SC504 transmission speed sensor monitors output shaft speed so the transmission control system can track gear changes and driveline speed accurately. This part number SC504 is a practical OE-style replacement for Subaru Legacy and Subaru Outback models, along with Tribeca and B9 Tribeca applications listed in the fitment data. It features a plug-in connector, 3-wire layout, and bolt-mount attachment for service on the transmission case.
This part cross-references SN8206 and VSS1038 for the same application.
What It Helps Address
- Erratic or inaccurate transmission speed signal readings
- Transmission warning lights related to speed sensor faults
- Harsh or delayed shifting caused by incorrect output shaft data
- Diagnostic trouble codes tied to the output speed sensor circuit
- Loss of transmission control input from a failed sensor
Installation Notes and Tips
Confirm connector shape, terminal style, and mounting style before installation. The SC504 uses a bolt-mount design with one mounting hole and a single connector, so the replacement should match the original sensor configuration on the vehicle. Inspect the harness connector and transmission case area for corrosion, damaged wiring, or debris before installing the new sensor.
Quality Assurance
Standard Ignition supplies replacement electrical components for service applications, and SC504 is built to match the listed fitment and connector specifications for Subaru Legacy, Outback, Tribeca, and B9 Tribeca models.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2013 | Subaru | Legacy | — | 3.6L | H6 | N/A | — |
| 2013 | Subaru | Outback | — | 3.6L | H6 | N/A | — |
| 2012 | Subaru | Legacy | — | 3.6L | H6 | N/A | — |
| 2012 | Subaru | Outback | — | 3.6L | H6 | N/A | — |
| 2012 | Subaru | Tribeca | — | — | — | N/A | — |
| 2011 | Subaru | Legacy | — | 3.6L | H6 | N/A | — |
| 2011 | Subaru | Outback | — | 3.6L | H6 | N/A | — |
| 2011 | Subaru | Tribeca | — | — | — | N/A | — |
| 2010 | Subaru | Legacy | — | 3.6L | H6 | N/A | — |
| 2010 | Subaru | Outback | — | 3.6L | H6 | N/A | — |
| 2010 | Subaru | Tribeca | — | — | — | N/A | — |
| 2009 | Subaru | Legacy | GT Limited | 2.5L | H4 | N/A | — |
| 2009 | Subaru | Legacy | — | 3.0L | H6 | N/A | — |
| 2009 | Subaru | Tribeca | — | — | — | N/A | — |
| 2008 | Subaru | Legacy | GT Limited | 2.5L | H4 | N/A | — |
| 2008 | Subaru | Legacy | — | 3.0L | H6 | N/A | — |
| 2008 | Subaru | Outback | XT Limited | 2.5L | H4 | N/A | — |
| 2008 | Subaru | Outback | — | 3.0L | H6 | N/A | — |
| 2008 | Subaru | Tribeca | — | — | — | N/A | — |
| 2007 | Subaru | B9 Tribeca | — | — | — | N/A | — |
| 2007 | Subaru | Legacy | GT Limited | 2.5L | H4 | N/A | — |
| 2007 | Subaru | Outback | XT Limited | 2.5L | H4 | N/A | — |
| 2007 | Subaru | Outback | — | 3.0L | H6 | N/A | — |
| 2006 | Subaru | B9 Tribeca | — | — | — | N/A | — |
| 2006 | Subaru | Legacy | GT | 2.5L | H4 | N/A | — |
| 2006 | Subaru | Outback | XT | 2.5L | H4 | N/A | — |
| 2006 | Subaru | Outback | — | 3.0L | H6 | N/A | — |
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