Compatible with ES330 RX330 2004 2005 2006 ; for RX400h 2006 2007 2008 Features: The carbon canister purge valve plays a crucial role in a vehicle's evaporative emissions. It helps manage and remove excess fuel vapors, thereby improving fuel efficiency and reducing harmful emissions. Installation: Replacing a faulty fuel vapor purge valve restores the vehicle's EVAP system to optimal function. Installation is simple, improves overall vehicle performance, reduces emissions, and helps keep the engine running clean. Function: By regulating the amount of fuel vapor entering the engine, the purge valve helps maintain the engine's air-fuel ratio within a reasonable range. This ensures stable combustion under various operating conditions, preventing engine vibration, insufficient power, and other problems. Tip: Please verify the purge valve model compatible with your vehicle before purchasing. Incorrect compatibility may not only prevent installation but also affect performance and even illuminate the malfunction indicator light., Manufacturer: MAIEYTE-1