These nozzles will fit your 1994-1998 Dodge Cummins 12v. Add up to 35hp and 70ft lbs of torque! 5 HOLE design with proper spray pattern. These are considered a replacement nozzle for the 1997-1998 Cummins with Manual, as they came with this size nozzle. We always recommend a boost gauge and pyrometer when installing nozzles with over 100HP rating. Nozzles should be pop tested and balanced by a certified shop.