PAI 045000 Piston Cooling Nozzle Set (6-Pack) – Cummins 855 Big Cam / Small Cam 3/8 Tube Cat marine and generator-set installations

Cat marine and generator-set installations using 3306 / 3406

National (BCA): HD206

Some Cummins applications use the larger CS41008 rotor — confirm your existing rotor dimensions if unsure

Ingersoll-Rand: 22283360

PAI 045000 Piston Cooling Nozzle Set (6-Pack) – Cummins 855 Big Cam / Small Cam 3/8 Tube Cat marine and generator-set installationsPAI 045000 nylon piston cooling nozzle for Cummins 855 series engines (NT855, N855, NTA855), shipped as a 6 pack with O rings included to do all six cylinders in one shot. The nozzles spray pressurized engine oil onto the underside of each piston to pull heat out under load and prevent piston scuffing or crown failure. Fits both Big Cam and Small Cam 855 configurations. Signs You Need New Piston Cooling Nozzles Cracked or brittle nylon nozzles found