CARQUEST premium remanufactured injectors are completely torn down, ultrasonically cleaned, inspected and remanufactured using premium components. Each injector is 100% tested on a sophisticated flow bench under multiple operating parameters to meet or exceed OE specifications. Product Features:Each unit is 100% tested to OE specifications.Includes all new premium quality o-rings and seals.Includes application specific technical bulletin which highlights critical aspects of the job and offers technical tips for proper installation.