Equip your truck with a more responsive engine, with the OTR Remanufactured Celect Diesel Fuel Injector with Expertise Built In. Due to its specialized design, this replacement component is able to spray a small amount of fuel directly into the combustion chamber to improve reaction time and overall fuel efficiency. Replacement injectors are often needed when symptoms such as thick exhaust, misfiring, and a stalling engine appear. FleetPride is your First Click in Heavy Duty.