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:
INLET VALVE - 51041010518 suitable for MAN D-engines
Premium Inlet Valve for Performance RangeDiscover our premium Inlet valve (Comparison number: 51041010518), an OEM spare part that is suitable for MAN D engines. Weighing only 0.18 kg, this product is ideal for marine and stationary use. Every detail has been carefully designed to ensure the quality you expect from an OEM spare part.Quality Standards and Internal ControlsThe comparison number 51041010518 represents a powerful spare part specifically tailored to the requirements of MAN D engines. Our products undergo strict internal control measures, meaning that each spare part meets the highest standards. This positively impacts the efficiency and longevity of your engines.
EXHAUST VALVE - 51041010512 suitable for MAN D engines
EXHAUST VALVE with the comparison number 51041010512 suitable for MAN D engines
INLET VALVE - 51041010511 suitable for MAN D-engines
Premium Inlet Valve Compatible with MAN D EnginesDiscover our inlet valve (comparison number: 51041010511), a top-quality OEM spare part specifically designed to meet the highest standards. This spare part with the comparison number 51041010511 is regarded as an essential component of your engine construction.Precise Fit for MAN D EnginesThe inlet valve is compatible with MAN D engines and offers precise fit, ensuring that the engines can operate smoothly. Weighing 0.17 kg, this OEM spare part contributes to the optimal performance of your systems and minimizes wear.
EXHAUST VALVE - 51041010510 suitable for MAN D-engines
Precise Solution with the Exhaust Valve Discover the Exhaust Valve, comparison number 51041010510, specifically designed to meet your requirements. This OEM spare part is essential for the reliable function of your engines and ensures optimal performance. Weighing only 0.25 kg, it is also lightweight and user-friendly.Optimally Tuned for MAN D Engines The Exhaust Valve is suitable for MAN D engines and is manufactured according to the highest standards. This way, you can be sure that you receive a product that meets the demands of regular maintenance for your engines. The specific tuning for MAN D provides you with the assurance that your engine operates efficiently, thereby extending its lifespan.
INLET VALVE - 51041010509 suitable for MAN D engines
Optimal OEM Replacement Part Fully Compatible with MAN D EnginesExperience the performance of our inlet valve, which serves as a reliable OEM replacement part, suitable for MAN D engines. With the comparison number 51041010509, this product offers proven quality that ensures optimal engine management. Thanks to its precise design, you can rely on a consistently perfect airflow, which significantly impacts the performance and efficiency of the engines.Versatility in Focus: Suitable for Various SeriesThe inlet valve is compatible with a wide range of MAN D series, including D2840, D2842, D2862, and D2876. The specific engine types compatible with our product are D2840LE301, D2842LE301, D2842LE405, D2842LE406, D2842LE410, D2862LE, and D2876LE301. This extensive selection of compatibility makes this OEM replacement part particularly versatile and enables easy use in a variety of applications, whether in marine or stationary contexts.
EXHAUST VALVE - 51041010503 suitable for MAN D-engines
Exhaust valve compatible with MAN D enginesThe exhaust valve with the comparison number 51041010503 is the ideal product for anyone looking for reliable OEM spare parts. This component impresses with its functionality and is specifically suitable for MAN D engines. At MOPA Motorparts, we adhere to the highest standards to ensure our parts meet the requirements of our B2B customers.Quality of OEM spare partsThe comparison number 51041010503 stands for tailored solutions in the group of valves. This OEM spare part is characterized by durability and excellent performance. By using sophisticated technologies, it is ensured that the exhaust valve is stable and robust to create ideal operating conditions.
EXHAUST VALVE - 51041010501 suitable for MAN D engines
Practical Exhaust Valve: Comparison Number 51041010501Discover the precise exhaust valve with comparison number 51041010501, a reliable product from our category “OEM spare parts.” This exhaust valve is the ideal solution for the requirements and specifications of MAN D engines. Enhance the efficiency of your machines with a product specifically designed for the challenges of operation in marine and stationary applications.
INLET VALVE - 51041010499 suitable for MAN D-engines
Perfect Inlet Valve for High-Performance EnginesDiscover our top-quality Inlet valve, suitable for MAN D engines, with the comparison number 51041010499. This replacement part ensures that your engine operates efficiently and delivers maximum performance.Designed for MAN D EnginesThe replacement part is carefully tailored to the requirements of MAN D engines. As part of our group of Valves, it ensures optimal operation and efficiency of your machines.
EXHAUST VALVE - 51041010492 suitable for MAN D-engines
Exhaust Valve - Comparison Number 51041010492Discover our exhaust valve, marked with the comparison number 51041010492. This OEM spare part meets the high standards you can expect from a reliable product. It is specifically designed to maximize the performance and longevity of your engines.Efficient Solution for MAN D EnginesThis product is suitable for MAN D engines and ensures optimal engine technology. With high-quality materials, it assures that the exhaust valve functions reliably even under demanding conditions in the long term.
INLET VALVE - 51041010491 suitable for MAN D-engines
Inlet valve suitable for MAN D enginesDiscover our quality-tested inlet valve (comparison number: 51041010491), suitable for MAN D engines. This spare part from the category valves meets the highest standards and ensures efficient and reliable engine performance. With a total weight of only 0.188 kg, it offers optimized handling while delivering robust performance.
EXHAUST VALVE - 51041010487 suitable for MAN D-engines
Premium Exhaust Valve – Comparison Number 51041010487The exhaust valve with the comparison number 51041010487 is an essential OEM spare part suitable for MAN D engines. This product belongs to the category of valves and represents a crucial component for the efficient functioning of engines. The thoughtful design ensures optimal integration into various application systems.Exact Dimensions for Optimal PerformanceThe exhaust valve weighs 0.249 kg and has dimensions of 14.5 cm in length and width as well as 5.1 cm in height. This compactness allows for easy installation in your motorized applications. Every part you find with us meets the high industry standards required for industrial and marine applications.
EXHAUST VALVE - 51041010483 suitable for MAN D engines
EXHAUST VALVE with the comparison number 51041010483 suitable for MAN D engines
INLET VALVE - 51041010482 suitable for MAN D engines
INLET VALVE with the comparison number 51041010482 suitable for MAN D engines
EXHAUST VALVE - 51041010479 suitable for MAN D engines
EXHAUST VALVE with the comparison number 51041010479 suitable for MAN D engines
INLET VALVE - 51041010478 suitable for MAN D engines
Quality Product: Inlet Valve Suitable for MAN D EnginesThe inlet valve with the comparison number 51041010478 is the right choice for the reliable supply of your engines. This OEM replacement part offers the highest precision and quality for those who prioritize performance and longevity. Our product is specifically designed for aquatic environments and stationary applications, ensuring smooth operation.Technical Details of the Inlet ValveThe inlet valve has a compact design with a weight of only 0.282 kg and dimensions of 14.7 cm in length, 5.8 cm in height, and width. This product ensures effective gas flow, which is crucial for the efficiency and long-term operation of your engines. Suitable for MAN D, it is an indispensable component to maximize the performance of your machines. Forget makeshift solutions - rely on the quality of the product with the comparison number 51041010478!
EXHAUST VALVE - 51041010447 suitable for MAN D engines
EXHAUST VALVE with the comparison number 51041010447 suitable for MAN D engines
EXHAUST VALVE - 51041010439 suitable for MAN D engines
Precise Exhaust Valve: Comparison Number 51041010439Discover the exhaust valve with the comparison number 51041010439, an essential component for efficient engines. The product belongs to the category of valves and impresses with its quality as an OEM replacement part. It offers the perfect fit and performance for engines that must meet high demands.Suitable for MAN D Engines: Optimized PerformanceOur exhaust valve is specially designed for MAN D engines and is ideal for applications in marine and stationary use. With a weight of 0.227 kg and compact dimensions of 14.5 cm in height, length, and width, the replacement part allows for seamless integration into your existing systems. This contributes to the efficiency and longevity of your engines.
INLET VALVE - 51041010438 suitable for MAN D engines
Inlet Valve Comparison Number 51041010438The inlet valve with the comparison number 51041010438 offers an excellent solution for your engines in industrial and maritime applications. This replacement part is perfect for maximizing efficiency and optimizing functionality. Rely on its assurance of quality and precision in performance.Optimal Operation of MAN D EnginesThis product is suitable for MAN D engines and ensures that your engine operates under optimal conditions. The premium design allows for a smooth combination of fuel and air, which experts say leads to improved engine performance.
INLET VALVE - 51041010425 suitable for MAN D engines
Quality Inlet Valve for Your EnginesThe inlet valve with the comparison number 51041010425 is an essential OEM spare part specifically designed for the smooth functionality of your suitable for MAN D engines. Weighing 0.176 kg and with compact dimensions of 13.9 cm in length and width, and 4.9 cm in height, it stands for precision and durability that is appreciated in the industry.Suitable for MAN D EnginesThis product is suitable for MAN D engines and impresses with its superior quality. As OEM spare parts, these valves meet the highest standards and represent reliability and efficiency. Our comparison number 51041010425 ensures that you make the right choice to optimize the performance of your engines.
EXHAUST VALVE - 51041010423 suitable for MAN D-engines
Exhaust valve with comparison number 51041010423Discover the exhaust valve suitable for MAN D engines, marked by the comparison number 51041010423. This product allows for efficient exhaust management and contributes to the optimal performance of your engines. Weighing only 0.19 kg, it facilitates handling as well as installation and application.Precise OEM replacement parts for your qualityAs an OEM replacement part, our exhaust valve meets the highest standards. Thanks to the careful selection of materials and precise processing, these replacement parts are structurally stable and efficient, optimal for the most demanding operating conditions. This component ensures that engines deliver consistent performance, which is of great importance to operators of MAN D engines.
INLET VALVE - 51041010417 suitable for MAN D-engines
Precise Inlet Valve with Reference Number 51041010417Discover our inlet valve with the reference number 51041010417, which is specifically suitable as an OEM spare part for MAN D engines. This product from the category "Valves" meets high standards of performance and reliability. With a weight of only 0.16 kg, this spare part is not only easy to handle but also crucial for the efficiency of your engine.
EXHAUST VALVE - 51041010411 suitable for MAN D-engines
Premium Exhaust Valve: Performance in FocusDiscover our exhaust valve, which carries the comparable number 51041010411 and is suitable as an essential OEM replacement part. This product fits perfectly for MAN D engines and ensures the efficient operation of your diesel and gas engines in challenging applications.Benefits of OEM Replacement Parts: Performance OptimizationAs a manufacturer of high-quality products, our offerings are optimized for use. The exhaust valve ensures that engines operate precisely. Trust our range in the field of engines. With the comparable number 51041010411, you receive a component specifically designed to meet the requirements of marine and stationary applications.
EXHAUST VALVE - 51041010410 suitable for MAN D-engines
Comparison Number 51041010410: Precision in Valve ManufacturingDiscover the powerful exhaust valve with the comparison number 51041010410. This product is precisely designed for MAN D engines and belongs to the product group of valves. As an OEM replacement part, it meets the high standards of equipment manufacturers, providing you with security and reliability.Technical Features of the Exhaust ValveThis exhaust component impresses not only with its quality but also with an optimal fit. It combines a weight of only 0.15 kg with ideal dimensions of 16 cm in length, 16 cm in width, and 5.3 cm in height. Thus, the exhaust valve is ideally suited as a reliable OEM replacement part to enable long-lasting and efficient operation of your engines.
INLET VALVE - 51041010405 suitable for MAN D engines
Inlet Valve Suitable for MAN D EnginesDiscover the premium inlet valve (comparison number: 51041010405), an essential OEM spare part for the requirements of MAN D engines. With a compact size of 14 cm in length and 14 cm in width, as well as a height of 7 cm, this product offers the ideal solution to optimize your engine’s performance. The precise manufacturing ensures that the part delivers functionality and efficiency in marine and stationary applications.Optimal Installation FeaturesWeighing only 0.29 kg, the inlet valve is not only light but also easy to install. This OEM spare part has been specifically designed for MAN D engines and provides a tailored fit that minimizes your engine’s downtime. The high quality of the materials and the excellent workmanship support reliable operation in use.
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.