Gates VVS166 Engine Variable Valve Timing (VVT) Solenoid

Gates VVT Solenoid for Subaru Applications

The Gates VVS166 Engine Variable Valve Timing Solenoid is an OE-style replacement for Subaru engines that use an oil control valve to manage cam timing. Built to OE specifications for fit, form, and performance, it is designed to help restore smoother idle, stronger power delivery, improved fuel economy, and lower emissions.

Gates Engine Variable Valve Timing Solenoids are part of the brand’s OE performance line, focused on direct-fit replacement parts that match original equipment requirements. For Subaru Baja, Impreza, Legacy, Outback, and Forester applications, the VVS166 provides a practical solution when VVT response becomes inconsistent or the original solenoid begins to fail.

Key Features

• OE performance Variable Valve Timing Solenoid, also referred to as an oil control valve
• Designed to OE specifications for fit, form, and performance
• Electromagnetic activation style with 12V operation
• Female connector with 1 connector and 2 male terminals
• Blade terminal type for direct replacement use
• Seal and gasket/seal included for proper sealing at installation
• Constructed with durable materials for service life in engine applications
• Gates VVS166 part number for accurate ordering and catalog matching

Detailed Description

The Gates VVS166 is a Variable Valve Timing (VVT) solenoid engineered for Subaru engines that rely on precise oil flow control to adjust cam timing. With an electromagnetic activation design, 12V voltage, and OE-matched dimensions, this solenoid is built to restore the control needed for consistent engine operation. The housing measures 4.843 inches long, 1.126 inches wide, and 1.126 inches high, with an 18 mm shaft diameter and a steel construction detail noted in the product data.

This part cross-references Dorman OE Solutions 917-279 for the same application. If you are replacing a failing VVT solenoid on a 2004-2006 Subaru Baja or Impreza, or a 2005-2006 Subaru Legacy or Outback, Gates VVS166 offers a direct-fit replacement path that aligns with OE requirements.

What It Helps Fix

• Rough or unstable idle caused by inconsistent cam timing control
• Reduced engine response from a sticking or slow-acting VVT solenoid
• Check engine light conditions related to variable valve timing performance
• Loss of fuel economy tied to improper oil control valve operation
• Increased emissions from timing control faults in Subaru VVT systems

Installation Notes and Tips

Verify connector style, terminal count, and OE part number before installation. The Gates VVS166 uses a female connector, blade terminals, and includes a seal/gasket seal, while mounting hardware is not included. Clean the mounting surface and inspect the engine oil condition, since contamination can affect VVT solenoid operation. Confirm vehicle application by year and model before ordering, especially for Subaru Forester, Impreza, Baja, Legacy, and Outback listings.

• Fits 2004-2006 Subaru Baja, N/A
• Fits 2004-2006 Subaru Impreza, N/A
• Fits 2005-2006 Subaru Legacy, N/A
• Fits 2005-2006 Subaru Outback, N/A
• Fits 2004-2005 Subaru Forester, N/A

Quality Assurance

Gates designs this Engine Variable Valve Timing Solenoid to OE specifications and tests it to help restore engine performance, fuel economy, idle quality, and emissions control. The VVS166 is built from high-quality materials for durability and maximum service life.