Leading Cylinder Head Cover Supplier in China
DSR, with 15 years of expertise in cylinder head cover manufacturing. We provide customers with professional solutions that balance emissions, weight, NVH, durability, and cost. Our cylinder head covers feature an integrated gasket design, eliminating the need for separate assembly compared to traditional solutions, resulting in faster installation and improved sealing performance.
Our cylinder head covers incorporate an integrated oil-gas separator, effectively separating mist-like lubricating oil and unburned gases (blow-by gas) suspended in the crankcase and valve chamber, reducing emissions and helping you easily meet OBD and emissions regulations.
For over a decade, we have consistently adhered to strict quality standards. Whether you require large-scale or small-scale production, we guarantee consistent quality. Even across batches, you can rest assured there will be no warping or seal failure issues, ensuring reliable performance.
Talk to us today and see how our cylinder head covers help you meet emission standards without redesigning your engine.
Cylinder Head Cover We Are Experted in
The lightweight aluminum alloy design can withstand the mechanical stress of engine operation without deformation or cracking, and resists corrosion and rust caused by oil, coolant, etc., improving the overall efficiency and reliability of your engine.
Made of ultra-light magnesium alloy, it significantly reduces weight and cost compared to traditional stamped oil pans. It controls and regulates the valve cover and nearby engine components at the appropriate temperature, preventing deformation or cracking during long-term use.
By molding the valve cover in one piece using high-flow engineering plastic, the PCV valve and oil-gas separator can be directly integrated into the cover, thereby reducing the number of parts and costs while improving assembly efficiency and reliability.
The entire valve cover is formed as a single piece, eliminating the need to combine multiple parts during assembly, simplifying the assembly process. It is less likely to deform, effectively reducing your maintenance or replacement frequency.
The multi-piece detachable design facilitates maintenance and parts replacement, and integrates more complex structures such as a secondary oil-gas separator, making it an ideal choice for high-performance engines.
Stamped steel is one of the most mature processes for cylinder head covers, significantly reducing material costs compared to engineering plastics. Furthermore, DSR utilizes high-quality steel, offering high strength, resistance to deformation, and rapid production. This makes it ideal for mass production and targeting basic models for the mass market.
Traditional cylinder head covers require the installation of PVC valves, gaskets, seals and other parts, while our new generation of integrated cylinder head covers integrates all these parts to achieve one-piece molding, simplifying the assembly process and reducing the risk of leakage.
The basic cylinder head cover design has no extra parts, making it easier to install and maintain. It has strong adaptability and is the most common but also the most practical protective part for most engines.
Why Choose DSR Cylinder Head Covers
Excellent sealing performance effectively prevents oil leaks, ensuring constant engine efficiency.
0.01mm high-precision machining ensures a perfect fit with your engine parts and enhances overall reliability.
Using materials and processes certified to the ISO 9001 quality management system, quality is assured.
The DSR’s optimized design effectively reduces noise and vibration, enhancing driving comfort and the overall vehicle quality.
Durable and maintains stable performance even under the corrosive effects of engine oil.
Performs under prolonged use, hot and cold cycles, and vibration and shock, without degradation due to aging or fatigue.
Compatible with a wide range of engine models and supports use with various materials, including aluminum alloys, magnesium alloys, and engineering plastics, meeting the diverse needs of OEMs and the aftermarket.
Remains stable under demanding operating conditions, including high speeds, high pressures, and strong vibrations. Even when the engine is running at full load for a long time, it can ensure reliable sealing and no structural deformation.
No Leaks, no Worries
Our cylinder head cover is securely fastened to the cylinder head with cylinder head cover bolts and sealed with cylinder head cover gaskets to ensure a reliable fit. This combination prevents oil leaks and blocks dust and debris, keeping your valve train and camshaft operating smoothly in a clean environment.
Even under high-temperature and high-pressure conditions, the cylinder head cover bolts and cylinder head cover gaskets maintain a tight seal, ensuring your engine runs safely and reliably over the long term.
200,000 kilometers without cracking
If you want your engine to run smoothly for a long time, the lifespan and material stability of the cylinder head cover are super important. Our cylinder head covers are made from high-strength aluminum alloy or reinforced nylon (PA+GF), with strict control over production processes and batch differences.
Whether for long-term use or cross-batch production, you need not worry about the cover cracking, aging, or leaking oil. Even under high-temperature and high-pressure conditions, the cover maintains its stable shape and sealing performance, ensuring your engine operates safely and reliably while reducing repair and maintenance costs.
The cylinder head cover (valve cover) is not a moving part of the car itself; its primary function is sealing and protection. It is installed at the top of the engine cylinder head and uses a sealing gasket to prevent engine oil from leaking out of the valve mechanism area. Additionally, the cylinder head cover isolates dust, moisture, and impurities, ensuring that internal components operate in a relatively clean environment.
In modern engines, the cylinder head cover is often integrated with the PCV (Positive Crankcase Ventilation) system, enabling the recovery and re-combustion of exhaust gases produced during combustion, thereby reducing emissions. In other words, it not only prevents oil leakage but also helps control the internal gas circulation of the engine.
Although it does not directly participate in power output, if the cylinder head cover or gasket is damaged, engine oil will leak, not only contaminating the engine surface but also potentially causing insufficient lubrication and premature wear of components.
Of course! We can provide free samples of standard models (you only cover the shipping cost) and custom models for design or dimensional verification. The sample fee can be deducted from the production order. This allows you to confidently assess our product quality and fitment compatibility before placing an order.
Our valve covers are rigorously validated for sealing, high-temperature resistance, corrosion resistance, and NVH (noise and vibration harshness) optimization, making them a reliable and cost-effective alternative to original equipment parts. Their lighter weight design, integrated functional modules, and optimized structure improve engine efficiency while reducing assembly costs and maintenance, making them a reliable and cost-effective choice.
In most cases, they refer to the same part. “valve cover” is more common in American English, while “cylinder head cover” is more commonly used in technical documentation or by European and Asian manufacturers. Both refer to the cover plate installed on top of the cylinder head to cover the valve mechanism.
Of course! We can provide free samples of standard models (you only cover the shipping cost) and custom models for design or dimensional verification. The sample fee can be deducted from the production order. This allows you to confidently assess our product quality and fitment compatibility before placing an order.
