Part Name: Fuel Injector. Compatible with Cummins NT855 NTA855 Diesel Engine. Please tell us of your engine model or a view of nameplate when order this item to lower the error rate. UPS Surepost usually takes 1-6 workdays. UPS Ground usually takes 1-5 workdays. If you don’t receive package over 30 business workdays, please inform us. Duty for International Buyers. We will do our best to offer you satisfied resolutions.