An injector for injecting a reagent includes a first injector body defining a first end and a second end. The first injector body further includes an outlet opening disposed proximal to the second end. The injector further includes a valve assembly at least partly enclosed by the first injector body. The valve assembly is configured to selectively dispense the reagent through the outlet opening of the first injector body. The injector further includes a cover member coupled to the first injector body and adapted to at least partially cover the second end of the first injector body. The cover member includes an integral flange portion for mounting the injector on a component.