2722000031 Valve Cylinder head, rear left side From China Customized Size Powder Metallurgy Technology For Mercedes 636, 463, 251, 230

 Valve cylinder head is one of the widely used drives in automobiles, and it mainly has the following functions:

1. PCV (Positive Crankcase Ventilation) Valve: Regulates crankcase pressure by rerouting blow-by gases back to the intake. Prevents oil leaks and excessive pressure buildup. Reduces emissions and maintains engine efficiency.
2. VVT (Variable Valve Timing) Solenoid: Adjusts camshaft timing for better fuel efficiency and performance. Helps with smoother idling and optimized power output. 
3. EGR (Exhaust Gas Recirculation) Valve: Recirculates exhaust gases back into the intake to lower NOx emissions. Improves fuel efficiency and meets emission regulations.
4. Secondary Air Injection Valve: Injects fresh air into the exhaust system to reduce emissions at cold start. Helps catalytic converter reach optimal temperature faster.