S408 cylinder head cover

Engine Cover, also known as Valve Cover or Rocker Cover, is an important part of the internal combustion engine. It sits on top of the valve chamber, covering the valves, rocker arms and other related components and helping to seal and protect them. There are many factors that go into the design and manufacture of an engine cover to ensure its functionality and durability. Functions of the engine cover: sealing/protection/heat dissipation/noise control/appearance material selection Engine covers are usually made of the following materials: Aluminum alloy: Advantages: light weight, good thermal conductivity, strong corrosion resistance. Disadvantages: higher cost and difficult processing. Plastic (polyamide, PA): Advantages: light weight, low cost, easy to process and shape. Disadvantages: The heat resistance is lower than that of aluminum alloy, and it may age after long-term use. Die cast aluminum: Advantages: It has the advantages of aluminum alloy while being relatively low cost in mass production. Disadvantages: Requires high-precision molds and strict die-casting process control.