Compatible with Subaru Impreza WRX (2006-2014), For Subaru Impreza STI (2007-2014), replacing part numbers 16611-AA720, 058085124, specification 550CC. As a key engine fuel supply component, it precisely controls fuel delivery and air-fuel ratio, fundamentally improving insufficient power, low injection efficiency and high fuel consumption, avoiding failures and air-fuel ratio imbalance caused by aging injectors, ensuring smooth engine operation. Stable performance in urban commuting starts/stops, highways, mountain roads and other power-demanding scenarios. For vehicles in good condition with high-quality fuel, cleaning every 40,000-60,000 kilometers is recommended; slight clogging can be resolved by high-gear acceleration, and proper high-speed driving daily reduces carbon deposits to extend service life. Manufactured to OE specifications for direct replacement and easy installation. High-quality materials exceed OEM standards and undergo strict testing, ensuring stable operation and longer service life. Optimizes fuel atomization and injection precision, eliminating misfires and hesitation, reducing fuel consumption, and improving driving comfort and power response. No complex procedures required, just follow the scientific cleaning cycle. The 40,000-60,000-kilometer cleaning interval matches regular maintenance rhythms; simple daily operations prevent clogging. Impurity and wear-resistant materials adapt to complex fuel environments, reducing maintenance frequency and costs. Directly supplied by IXGKHC with reliable quality. Please check vehicle year, model and other information before purchase to confirm consistency with the compatibility list and part numbers. The product complies with Amazon North America site rules, with strict quality control throughout, and customer service is available for compatibility or product issues. 2006-2014 Replacement For Subaru Impreza WRX 2.5L 2006-2013 Replacement For Subaru Forester XT 2.5L 2012 Replacement For Subaru Legacy 2.5GT 2.5L 2008-2011 Replacement For Subaru Impreza 2.5L H4 Turbocharged EJ255 2008-2011 Replacement For Subaru Impreza 2.5L H4 Turbocharged EJ257 2008-2010 Replacement For Subaru Impreza DOHC EJ255 2008-2010 Replacement For Subaru Impreza DOHC EJ257 2006-2007 Replacement For Subaru Impreza 2.5L H4 Turbocharged EJ255 2007 Replacement For Subaru Impreza 2.5L H4 Turbocharged EJ257 2 008-2011 Replacement For Subaru Forester 2.5L H4 Turbocharged EJ255 2007-2009 Replacement For Subaru Forester 2.5L H4 DOHC EJ255 2006-2007 Replacement For Subaru Forester 2.5L H4 Turbocharged EJ255