This GENUINE Cummins part # 3865138 intake manifold for the N14 DIESEL engine may very well be the last surviving example of this part available in new unused condition. THIS IS NEW OLD STOCK. THIS ITEM IS NOT IN ORIGINAL PACKAGING BUT IT DOES HAVE ITS ORIGINAL PLASTIC DUST COVER OVER THE AIR INTAKE HOLE. This item has been around several years in our storage it therefore may be dusty may have very minor scratching please see photos. Info below generated by google AI. The Cummins part number. Aluminum engine air intake manifold designed specifically for the heavy-duty Cummins N14 diesel engine. It is primarily compatible with N14 CELECT and CELECT Plus engine configurations ranging from 310 to 370 horsepower. Part Details & Availability. Because the N14 is a legacy engine platform, finding this specific part in brand-new condition from factory stock can be difficult, as most inventory consists of used, recycled, or remanufactured OEM units.