Engines & Engine Parts. Exterior Parts & Accessories. Heavy Equipment Parts & Access. Motorcycle & Scooter Parts. 6X KDAL59P9 Fuel Injector M12 thread Replacement New For Cummins Diesel Engine. For Cummins Diesel Engine. Feedback & Customer Services. Our office hours are every day except Sunday, but the processing time is uncertain, we will process your problem on the same day. And our office is closed on Sunday and we apologize for the late reply during the holidays.