Diesel Engine Parts 4012662 4011502 Single Head Gasket Kit for Cummins QSV91. Compatible for : Cummins QSV91. OUR ADVANTAGES: Professional technical team support to help you find the right parts With over 15 years of experience, we produce strictly in accordance with original factory specifications, providing OEM-quality products and branded packaging A leading supplier in the field of auto parts and engineering equipment products?? Important Reminder: Since the compatibility of engine overhaul kit parts is related to the engine model and parameters, to ensure that the parts are 100% compatible with your equipment, please be sure to provide a photo of the engine nameplate! 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.