diesel engine parts oil cooler core 3021581 for nt855 heavy duty truck

engine parts
cylinder head, body, oil pan, etc.
crank and connecting rod mechanism: piston, connecting rod, crankshaft, connecting rod bush, crankshaft bush, piston ring, etc.
valve train: camshaft, intake valve, exhaust valve, rocker arm, rocker shaft, tappet, push rod, etc. intake system: air filter, throttle, intake resonator, intake manifold, etc.
exhaust system: ternary catalyst, exhaust manifold, exhaust pipe drive train accessories
flywheel, pressure plate, clutch plate, transmission, gear shift control mechanism, transmission shaft (universal joint), wheel hub, etc.
brake accessories.syi