Auto IN EX camshaft for Nissan Patrol TB48 4.8L DOHC camshaft stage 1 2 3 4

** Better wear resistance

** Chilled cast iron camshaft is better for medium and Low Power engine with high speed  

** Good tension strength

** High hardness on surface, long life

** High mechanical strength

** not easy to break and stable quality

** High frequency quenching on 45# steel and CF53 steel materials

** Carburizing and quenching on 20CrMnTiH steel materials. the advantage is that the whole camshaft with hardness and 58-62HRC on surface 

** Steel materials fit for high power engine and Non-high-speed engines of other powers