Beck Arnley 158-0555 Throttle Position Sensor

Beck Arnley Throttle Position Sensor for Subaru

The Beck Arnley 158-0555 throttle position sensor is built for foreign nameplate applications that call for OE-style form, fit, and function. It is a direct-fit replacement for select Subaru models, including Subaru Forester, Subaru Impreza, Subaru Legacy, Subaru Outback, and Subaru Baja applications.

Key Features

• Throttle position sensor for emission control and engine management systems
• OE-spec fitment focus for foreign nameplate vehicles
• Engineered to match the original part’s form, fit, and function
• Fits 2003-2006 Subaru Baja, N/A
• Fits 1999-2004 Subaru Forester, N/A
• Fits 1999-2004 Subaru Impreza, N/A
• Fits 2000-2004 Subaru Legacy, N/A
• Fits 2000-2004 Subaru Outback, N/A
• Fits 1999 Subaru Impreza, N/A, except California
• Fits 1999 Subaru Legacy, N/A, not suitable for California emission standards

Detailed Description

Beck Arnley 158-0555 is a throttle position sensor for Subaru vehicles that need a precise signal from the throttle body to the engine control system. Beck Arnley sources parts to meet foreign nameplate OE specifications, helping ensure the replacement matches the original application requirements for Subaru Forester, Subaru Impreza, Subaru Legacy, Subaru Outback, and Subaru Baja models.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part May Address

• Erratic throttle response
• Unstable idle behavior
• Throttle position signal faults
• Driveability concerns tied to sensor output
• Emission control system fault codes related to throttle input

Installation Notes and Tips

Verify the vehicle year, model, and emissions note before ordering, especially for 1999 Subaru Impreza and 1999 Subaru Legacy applications. Confirm connector style, throttle body mounting, and calibration requirements against the original sensor before installation. The part number 158-0555 should be matched to the exact Subaru application listed above.

Quality Assurance

Beck Arnley parts are sourced to meet foreign nameplate OE specifications for form, fit, and function, giving technicians a replacement option aligned with original equipment expectations.