4PCS Fuel Injector Assembly for 3800876 Cummins B3.3 QSB3.3 Diesel Engine. Package included: 4Fuel Injector. Fitment: For Cummins B3.3 QSB3.3 Diesel Engine. Because the warehouse and technical staff need to check the specific information. If you choose other reasons to return, the processing time will be longer. Because we need to consult technical personnel and warehouse personnel, sometimes the response of customer service may not be timely, please wait for a while, we will respond to you as soon as possible. Please do not leave a negative comment without contacting us, as this is not what we want from each other. Thank you for your kind understanding.