Subaru Genuine Valve CP Control 11810AA040 – OEM 4-Cylinder Engine Part

Overview

Subaru Genuine Valve CP Control 11810AA040 is an OEM replacement designed to match the original equipment specifications for a wide range of Subaru 4-cylinder H4 engines. Rather than a generic alternative, this part aims to fit the exact mounting points and electrical connections you expect from Subaru factory components. The result is a seamless integration with your engine management system, preserving the feel of a factory repair and supporting consistent engine behavior.

Key compatibility

This control valve is listed for several models and years, reflecting Subaru’s broad 4Cyl H4 family. It fits:

• 2002-2006 Outback and Legacy
• 2005-2010 Outback and Legacy turbo
• 2004-2007 Impreza
• 2004-2014 WRX & STI
• 2015-2016 STi
• 2003-2010 Forester
• 2003-2006 Baja

What’s included and how it helps

Each order contains one valve CP control (part 11810AA040). Designed to align with engine timing and control systems, it can contribute to a stable idle, responsive throttle, and a cohesive engine feel when installed by a qualified technician.

• OEM part number: 11810AA040
• Compatibility with a broad range of Subaru 4-cylinder engines
• Factory-grade tolerances for reliable fitment

Why choose Subaru Genuine

Choosing OEM parts helps preserve the integrity of your engine’s original design. Subaru tests each component under real-world conditions to ensure consistency with factory specifications, reducing guesswork during replacement and helping maintain vehicle value over time.

Installation notes

Professional installation is recommended to ensure correct alignment and electrical connections. Always disconnect the battery and follow service manual procedures when replacing valve components. If you’re unsure about compatibility, consult model-specific guides or a certified Subaru technician.

Real-world use scenarios

Owners replacing a worn valve CP control may notice smoother engine feel as the new part integrates with the vehicle’s control system. While results vary, the OEM part is designed to preserve factory compatibility across a broad range of Subaru models, which can help maintain consistent performance in daily driving and weekend trips.

Built to withstand the vibration and heat typical of Subaru engines, the CP control is engineered for long-term reliability within the listed applications. The 11810AA040 part number identifies a precise, factory-grade replacement that fits the intended platforms without modification.