Engine valve – precision control for marine and industrial engines
Engine valves are essential components in every combustion engine, ensuring precise control over intake and exhaust processes. Whether in marine engines, gas-powered generators, stationary industrial motors, or locomotive engines, the right engine valve ensures operational efficiency, combustion accuracy, and long service life. Choosing OEM-quality engine valve parts is critical for long-term performance, safety, and cost-efficiency.
Choose from following:
AIR SUPPLY VALVE - 81521106092 suitable for MAN D engines
Air supply valve suitable for MAN D enginesOur air supply valve with the comparison number 81521106092 is an essential component for engines used in marine and stationary applications. This OEM replacement part ensures that the operating parameters of MAN D engines are optimally maintained. Weighing 0.43 kg, it combines robustness and efficiency in a compact design.
AIR SUPPLY VALVE - 81521106088 suitable for MAN D engines
Precise Air Supply Valve for Your ApplicationsDiscover our air supply valve with the comparison number 81521106088, specifically designed to optimize the performance of your engines. This product is an essential spare part for the functional efficiency and operational reliability of your machines. It belongs to the category "Valves" and weighs only 0.32 kg, making handling and installation easier.Air Supply Valve Suitable for MAN D EnginesThe air supply valve is suitable for MAN D engines and ensures precise management of all venting processes. By using OEM spare parts, we ensure high quality specifically tailored to your requirements. Rely on the quality you can expect from us and extend the lifespan of your machines.
AIR SUPPLY VALVE - 81521106087 suitable for MAN D engines
Air Supply Valve Compatible with MAN D EnginesDiscover our air supply valve, listed under the comparison number 81521106087, specifically designed for MAN D engines. This product belongs to the group of valves and ensures optimal engine performance, whether in marine or stationary applications. Weighing only 0.3 kg, it combines lightness and robustness.OEM Replacement Parts for the Highest StandardsWe exclusively offer OEM replacement parts that meet the high-quality standards of the manufacturer. The air supply valve is an OEM replacement part designed for durability and flawless functionality. Rely on the wear resistance and efficiency you expect from a replacement part.
AIR SUPPLY VALVE - 81521106086 suitable for MAN D engines
Efficient Air Supply Valve for Demanding EnginesThe air supply valve, comparison number 81521106086, is an essential product specially designed for the requirements of engines. This spare part, compatible with MAN D engines, offers outstanding performance and reliability. Weighing only 0.3 kg, it facilitates handling without sacrificing the necessary robustness.Quality through OEM Spare PartsWe exclusively distribute OEM spare parts, which means that every part, including the air supply valve, meets the manufacturer's standards excellently. Compared to aftermarket products, which often vary in quality, our OEM spare part ensures that you receive the right part for your engine. The comparison number 81521106086 ensures that you choose a product of the highest possible quality.
AIR SUPPLY VALVE - 81521106084 suitable for MAN D engines
Air Supply Valve with Comparison Number 81521106084Discover our air supply valve with the comparison number 81521106084, an essential OEM replacement part for your engines. This product stands out due to its precise fit, specifically designed for MAN D engines. Weighing only 0.3 kg, the air supply valve is easy to handle and install, making it an ideal choice for your applications.
AIR SUPPLY VALVE - 81521106083 suitable for MAN D engines
Air Supply Valve for Your Engine NeedsDiscover the air supply valve, which is excellently suited for applications compatible with MAN D engines. This product carries the comparison number 81521106083 and is part of the valves category, which is crucial for performance and efficiency. Weighing 0.465 kg, it is compact yet strong enough to withstand the challenges of marine and stationary use, as well as in locomotives.Precision and Quality in OEM Spare PartsOur air supply valve offers you OEM spare parts quality, ensuring that you receive a product that meets strict industrial standards. Each OEM spare part is precisely manufactured to ensure flawless functionality. Thus, the air supply valve is the ideal solution to extend the lifespan of your engines and optimize their performance.
AIR SUPPLY VALVE - 81521106077 suitable for MAN D engines
Discover the Air Supply Valve for MAN D EnginesDiscover the air supply valve with the comparison number 81521106077, a crucial replacement product that is perfectly tailored to the requirements of engines. This replacement part weighs only 0.465 kg and impresses with its robustness and precise functionality. As part of the category Valves, this replacement part is particularly suitable for MAN D engines, especially for marine and stationary applications.Quality of Excellent Replacement PartsThe quality of our air supply valve meets the high standards of OEM (Original Equipment Manufacturer). Rely on replacement parts that have been specifically developed for your engines to ensure long-term performance. With the comparison number 81521106077, you can be confident that you are acquiring a tested and high-performance component.
AIR SUPPLY VALVE - 81521106062 suitable for MAN D engines
Robustness and Efficiency: Air Supply Valve 81521106062Discover the air supply valve with the comparison number 81521106062, optimally designed to meet the highest demands. This product belongs to the category "Valves" and is suitable for MAN D engines. Weighing 0.46 kg, it is ideal for various applications in marine and stationary fields.High-Quality Materials for OEM Replacement PartsThe air supply valve is an OEM replacement part that reflects the manufacturer's quality. Compared to aftermarket products, which often do not offer the same precision, the product with comparison number 81521106062 has been specifically developed for reliable engine performance. OEM replacement parts represent the precision of the manufacturers and ensure performance.
AIR SUPPLY VALVE - 81521106061 suitable for MAN D engines
Air Supply Valve: Your Solution for Efficient EnginesDiscover our product, the air supply valve with the comparison number 81521106061. This spare part is perfectly designed to optimize the performance and efficiency of your engines. Weighing only 0.46 kg, it offers both robustness and lightness, allowing for easy installation.Precision for Your Engine PerformanceThe air supply valve ensures precise control of fuel flow and is suitable for MAN D engines. With the excellent quality of the materials used, you can rely on the durability and reliability of this OEM spare part. Trust in a product designed to deliver the best results in your marine and stationary applications.
PRESSURE RELIEF VALVE - 81521106059 suitable for MAN D engines
Pressure Relief Valve – Your Reliable ComponentDiscover our Pressure Relief Valve with the comparison number 81521106059, designed for maximum efficiency. This OEM replacement part ensures smooth operation of your engines.Suitable for MAN D EnginesThe Pressure Relief Valve is suitable for MAN D engines and impresses with its high quality. Our customers can rely on products specifically designed to meet the requirements for marine and stationary applications.
AIR SUPPLY VALVE - 81521106056 suitable for MAN D engines
Air Supply Valve for Reliable EnginesThe air supply valve with the comparison number 81521106056 is a crucial OEM replacement part specifically designed for the reliable function of your engines. Weighing 0.47 kg, this product offers not only robustness but also the highest precision. It is suitable for MAN D engines and plays a central role in the efficient control and performance optimization of the engine.
AIR SUPPLY VALVE - 81521106045 suitable for MAN D engines
Trust Our Air Supply ValveDiscover our Air Supply Valve with the comparison number 81521106045. This product is an essential spare part for engines that rely on performance and efficiency. Weighing 0.46 kg, it provides the ideal solution for the demands of marine and stationary applications.Customized Solution for MAN D EnginesOur Air Supply Valve is compatible with MAN D engines, thereby meeting the high industry standards. As an OEM spare part, it offers an excellent fit and long-lasting performance tailored to the specifications of MAN D. Rely on quality and reliability with this product.
AIR SUPPLY VALVE - SVDVD5-3 suitable for Bosch engines
Precision with Comparison Number SVDVD5-3Discover our premium product, the air supply valve with the comparison number SVDVD5-3. Weighing only 0.28 kg, this OEM replacement part is essential for the performance of engines. The reliable design ensures that your engine operates optimally in marine and stationary applications.Perfect Fit for MAN D EnginesThe air supply valve is compatible with MAN D engines and ensures maximum efficiency. Our OEM replacement parts are carefully selected to optimize the functions and performance of your engines. Trust in the quality that you can only find at MOPA Motorparts.
AIR SUPPLY VALVE - 81521106043 suitable for MAN D engines
Optimal Performance with the Air Supply ValveThe air supply valve with the reference number 81521106043 is an essential product for efficient performance of your engines. This OEM replacement part ensures smooth operation and meets application requirements. It impresses not only with its functionality but also with precise manufacturing and quality.Suitable for MAN D EnginesThe air supply valve is suitable for MAN D engines and offers you the assurance of being able to rely on OEM replacement parts. Weighing 0.28 kg, this replacement part is easy to handle and allows for quick installation processes. Each component undergoes strict internal controls to ensure that it meets all requirements.
AIR SUPPLY VALVE - 0481063003 suitable for Bosch engines
Air supply valve with reference number 0481063003Discover our air supply valve with reference number 0481063003, specifically designed to work reliably and efficiently. This product belongs to the category of valves and is an essential component for your machines. Weighing only 0.28 kg, it offers easy handling and is suitable for various applications.
AIR SUPPLY VALVE - SVDVD6-1 suitable for Bosch engines
Premium Air Supply Valve for High-Quality ApplicationsDiscover the air supply valve with the reference number SVDVD6-1, which is perfectly suited for MAN D engines. Weighing 0.275 kg, this OEM replacement part ensures optimal functionality of your engines. The special manufacturing ensures that the performance parameters of your applications are met.
AIR SUPPLY VALVE - 81521106042 suitable for MAN D engines
Air Supply Valve with Comparison Number 81521106042Discover our air supply valve with the comparison number 81521106042, a high-quality OEM spare part. Suitable for MAN D engines, this product offers optimal functionality. Weighing 0.275 kg, the air supply valve is lightweight and robust, ideal for various applications in stationary projects.
AIR SUPPLY VALVE - 0481063006 suitable for Bosch engines
Air Supply Valve compatible with MAN D - Your SolutionDiscover the air supply valve with the comparison number 0481063006, which is optimally suited for MAN D engines. This OEM replacement part ensures excellent quality and durability, making it the ideal component for applications relying on MAN D engines. Weighing only 0.275 kg, the product is both lightweight and easy to install.Efficiency Improvement with the OEM Replacement PartThe air supply valve marked with the comparison number 0481063006 plays a central role in the functionality of engines. The component ensures that the fuel flow is efficiently regulated, thereby enhancing the performance and efficiency of the engine. This makes the replacement part suitable for MAN D engines particularly valuable for operators who depend on reliability.
AIR SUPPLY VALVE - 81521106036 suitable for MAN D engines
Discover the Air Supply Valve for MAN D EnginesDiscover our Air Supply Valve (reference number 81521106036), specifically designed for the efficient performance of engines. Weighing 0.37 kg, this OEM replacement part combines robustness with exceptional functionality to meet the demands of MAN D engines.Efficient Functionality for EnginesThe Air Supply Valve plays a central role by relieving excess pressure and thus ensuring efficient cooling. Our product ensures that your engines operate reliably and extends their lifespan. All offered replacement products are OEM parts that meet the highest standards, allowing you to rely on their performance.
AIR SUPPLY VALVE - 81521106031 suitable for MAN D engines
Air Supply Valve: Quality for MAN D EnginesDiscover our air supply valve with the comparison number 81521106031, specially designed as an OEM replacement part for MAN D engines. This reliable product offers optimal functionality and is ideal for applications in marine and stationary engine technology. Weighing 0.47 kg, it impresses with the stability and durability you expect from top-quality replacement parts.Product Details: Your Advantages at a GlanceOur air supply valve falls under the category of valves and offers you a customized solution to enhance the efficiency of your engines. The comparison number 81521106031 allows for easy identification and fits perfectly with the requirements of manufacturers such as MAN, MWM, Mercedes-Benz, Deutz, and Volvo. The appropriate design ensures smooth performance.
NON-RETURN VALVE - 81521020024 suitable for MAN D engines
Non-return valve – Quality for Your EnginesDiscover our non-return valve, an OEM replacement part with the part number 81521020024. This product is specifically designed and suitable for use in compatible with MAN D engines. Weighing only 0.043 kg, this non-return valve can be easily integrated into your existing systems and offers reliable performance.
SAFETY VALVE - 81521020022 suitable for MAN D engines
Reliable Safety Valve: Comparison Number 81521020022Discover our safety valve, marked with the comparison number 81521020022. This excellent product is suitable for MAN D engines and offers optimal safety and performance in demanding applications. Weighing only 0.068 kg, it impresses with a robust design that allows for consistent use.Quality in Focus: OEM Spare Parts for EnginesOur safety valve belongs to the category of OEM spare parts and is specifically designed for MAN D engines. These components provide you with the highest quality that you can expect from equipment manufacturers. Take advantage of offers in original equipment quality while also benefiting from affordable prices.
VALVE - 81521020002 suitable for MAN D engines
Precision Valves: Your Replacement Part Suitable for MAN DDiscover our valve with the comparison number 81521020002, which is precise and reliably suitable for MAN D engines. This OEM replacement part ensures maximum efficiency and easy installation. By using quality materials, our product meets high standards and secures the optimal function of your engine.
TWO-CIRCUIT PROTECTION VALVE - 81521019017 suitable for MAN D engines
Discover Powerful Two-Circuit Protection ValveThe Two-circuit protection valve with the comparison number 81521019017 is an excellent OEM spare part that has been specifically developed for use in MAN D engines. This product ensures reliable functionality and, weighing 0.65 kg, is ideal for marine as well as stationary applications.OEM Spare Parts for Highest EfficiencyUnlike aftermarket parts, our OEM spare part stands for quality and durability. The comparison number 81521019017 confirms that this spare part, compatible with MAN D, not only fits perfectly but also optimally supports the performance of your engine. Rely on the authenticity and efficiency of our products to avoid uncertainties with aftermarket solutions.
What is an engine valve?
An engine valve is a mechanical component that opens and closes to control the flow of gases into and out of the engine cylinders. Typically made from heat-resistant metals, each valve for engine operation must withstand extreme temperatures and high-pressure environments.
There are two primary types: intake valves, which allow the air-fuel mixture to enter the combustion chamber, and exhaust valves, which release burned gases after combustion. The opening and closing cycles of these valves are precisely timed to the engine’s rotation, ensuring seamless combustion and power delivery.
Function and benefits of engine valves
The valves engines rely on must perform under extreme stress. The proper functioning of each valve of engine directly impacts power output, fuel efficiency, and emissions. Worn or faulty motor valves can lead to misfires, reduced engine performance, overheating, or even total engine failure.
Here are the key benefits of using high-quality engine valve parts:
- Optimized sealing and compression
- Efficient combustion and power delivery
- Extended engine life and maintenance intervals
- Reduced emissions and fuel consumption
- Enhanced thermal and mechanical durability
Types, materials and OEM compatibility
Depending on the application, engine valves differ in design and construction. Intake valves are optimized for cooler airflow, while exhaust valves endure hotter temperatures and aggressive gases. Materials range from hardened steel to titanium alloys, often with surface treatments like nitriding or chrome plating for added wear resistance.
Our engine valve parts meet strict OEM standards, ensuring full compatibility with a wide range of engine models. This includes precise dimensions, material specifications, and valve timing synchronization. Whether you're replacing a single motor valve or sourcing complete valves engines sets, our parts are engineered for lasting reliability and performance.
Use cases and industrial relevance
Engine valves play a central role in marine propulsion systems, stationary power units, gas engine installations, and locomotive drives. In these environments, any failure in the valve for engine functionality can cause severe operational downtime. That’s why OEM-compliant, technically precise engine valve parts are essential across all heavy-duty applications.
Buying advantages with us
We supply only OEM-grade motor valves and engine valve parts, ensuring a precise fit and high durability. With fast DHL Express delivery worldwide, technical customer support, and a wide selection tailored for marine and industrial engines, we help you keep operations running with confidence. Easy online ordering and multiple payment options make the procurement process efficient and secure.
Frequently asked questions about engine valves
What is an engine valve?
An engine valve controls the flow of air, fuel, and exhaust gases in a combustion engine. It opens and closes at precisely timed intervals, supporting efficient combustion and power output.
What are the parts of a engine valve?
Typical parts of a engine valve include:
- Valve head (seals against the seat)
- Valve stem (guides the motion)
- Valve seat (provides the sealing surface)
- Spring and cotters (ensure return and retention)
- Guide (ensures proper alignment and reduces friction)
Related components for sealing and engine control
Engine valves operate in conjunction with other vital components such as gaskets, hoses, valve guides, springs, and cooling systems. These elements must work together to maintain compression, regulate temperature, and ensure overall engine stability—especially in demanding marine and industrial settings.