The main function of the excavator cylinder head cover gasket is to cover and seal the cylinder head, keeping the oil inside and preventing dirt, moisture, and other contaminants from entering, thus ensuring the smooth operation of the engine.
The design and function of the cylinder head cover gasket are mainly reflected in the following aspects:
1. Sealing: The gasket covers and seals the cylinder head, ensuring that the oil remains inside the engine and preventing external contaminants such as dirt and moisture from entering, thus protecting the engine from pollution and corrosion.
2. Oil protection: By isolating the oil from the air, the gasket prevents the oil mist formed during engine operation from coming into contact with the oxygen in the air, thereby avoiding oil oxidation and contamination, and maintaining the purity of the oil. This measure helps to extend the engine’s lifespan.
3. Crankcase ventilation: The cylinder head cover gasket is also responsible for crankcase ventilation, using an internal baffle or oil filter to prevent oil from entering the intake, ensuring the normal operation of the engine.
4. Acting as a filling port: The structure of the cylinder head cover can be as simple as a hole, serving as a filling port, or it can be more complex, including a filling tube, making it convenient for adding and maintaining oil.
In summary, the cylinder head cover gasket plays a crucial role in the excavator, ensuring the smooth operation and extended lifespan of the engine through its design and function.

Product NO.	Applicable models	Size/Dimension	Weight	Packaging unit
65.03905-0023A	DH130LC-V DH130W-V DH150LC-7 DH150W-7 DH210W-7(S/N:20001~21000) DH210W-7(S/N:21001~) DH215-7 DH215-9 DH215-9E DH220LC-7 DH220LC-9E DH220LC-V DH225LC-7 DH225LC-9 DH258LC-7 DH258LC-V DH300LC-7 DH300LC-V DH360LC-V DH370LC-7 DH370LC-9 DH420LC-7 DH500LC-7 DX225LC DX260LC DX300LC S150LC-7B DX140W/DX160W TIER-II DX140W TIER-IIDX190WA(T-2) DX200A DX200A(S/N:1001~) DX210/DX225LCB DX210WA(T-2) DX220A/DX225LCA DX220AF DX220AF(S/N:1001~) DX220LCDX225LCA(S/N:1001~) DX260LCA DX300LCA DX300LCA-7M SOLAR 130-V SOLAR 130LC-V SOLAR 130W-V(2) SOLAR 130W-V(2) SOLAR 140-V SOLAR 140LC-V SOLAR 140W-V SOLAR 140W-V SOLAR 160W-V SOLAR 170-III SOLAR 170LC-V SOLAR 170W-V SOLAR 170W-V SOLAR 175LC-V SOLAR 180W-V SOLAR 180W-V SOLAR 185W-V SOLAR 200W-V SOLAR 200W-V SOLAR 210W-V SOLAR 210W-V SOLAR 220LC-6 SOLAR 220LC-V SOLAR 220LC-V SOLAR 220N-V SOLAR 225LC-7A SOLAR 225LC-V SOLAR 225LC-V SOLAR 225NLC-V SOLAR 230LC-V SOLAR 250LC-V SOLAR 255LC-V SOLAR 290LC-V SOLAR 290LC-V SOLAR 300LC-7A SOLAR 300LC-V SOLAR 300LC-V SOLAR 330LC-V SOLAR 330LC-V SOLAR 340LC-7 SOLAR 340LC-V SOLAR 370LC-V SOLAR 400LC-V SOLAR 400LC-V SOLAR 420LC-V SOLAR 420LC-V SOLAR 470LC-V SOLAR 470LC-V SOLAR 500LC-V SOLAR 50W-III SOLAR 80W-III SOLAR 130LC-V SOLAR 140LC-V SOLAR 140W-V&S160W-V SOLAR 140W-V RAIL WAY SOLAR 150LC-V SOLAR 155LC-V SOLAR 175LC-V SOLAR 210W-V SOLAR 225LC-V SOLAR 255LC-V DX225LCA	35X11	0.007KG	EA
400603-00049			0.017KG	EA