Valve train components – precision control for engine timing
Valve train components are essential for the proper operation of internal combustion engines. They control the opening and closing of intake and exhaust valves, ensuring precise timing and airflow within the combustion chamber. High-quality valve train components are critical to engine performance, efficiency and longevity – especially in high-load industrial and marine engines.
Choose from following:
VALVE HOUSING - 21346294 suitable for Volvo/Volvo Penta engines
VALVE HOUSING with the comparison number 21346294 suitable for Volvo/Volvo Penta engines
VALVE HOUSING - 21334024 suitable for Volvo/Volvo Penta engines
Valve housing: Comparison number 21334024Discover the valve housing with the comparison number 21334024, an essential product for professional applications. This valve housing is perfectly suited for engines that must operate reliably. With a weight of 3.77 kg, it provides the strength expected in the marine and diesel industry.Optimal performance: Suitable for Volvo/Volvo Penta enginesThe OEM replacement part is specifically designed for Volvo/Volvo Penta engines and represents unmatched quality and precision. Our OEM replacement parts enable you to get the best performance out of your engine without compromises.
ROCKER ARM - 21316420 suitable for Volvo/Volvo Penta engines
Excellent Rocker Arm for Optimal PerformanceDiscover our OEM replacement part: the rocker arm (comparison number 21316420), specifically designed for applications in the field of valve train components. This product weighs 1.798 kg and is ideally suited for use in engines, particularly in marine and stationary applications.Precisely Tuned for Volvo/Volvo PentaThe rocker arm is compatible with Volvo/Volvo Penta engines and excels in high precision and durability. As an OEM replacement part, it offers the quality you can expect from top-notch components and ensures that your engines operate efficiently.
ROCKER ARM - 21316397 suitable for Volvo/Volvo Penta engines
Precise Spare Part: Rocker Arm for EnginesDiscover our rocker arm spare part, suitable for Volvo/Volvo Penta engines with the comparison number 21316397. This product impresses with its excellent quality and optimal functionality in the valve train. The OEM spare part is a reliable choice for those who are looking for long-lasting performance from their engines and do not want to settle for less. Weighing 0.983 kg, this rocker arm spare part offers the necessary robustness for even the most demanding operating conditions.
ROCKER ARM - 21316076 suitable for Volvo/Volvo Penta engines
Precise OEM Replacement Part: The Rocker ArmDiscover our rocker arm joint, an essential replacement part that offers real value for your applications. With the comparison number 21316076, this product ensures that you receive only the best quality for your Volvo/Volvo Penta engines. The precise manufacturing process ensures that all parts work smoothly together and provide excellent performance.
ROCKER ARM - 21306331 suitable for Volvo/Volvo Penta engines
High-Quality Product with Comparison Number 21306331Discover the top-notch rocker arm, suitable for Volvo/Volvo Penta engines, with the comparison number 21306331. This essential component belongs to the group of valve train components and enables precise valve control in your engine. Weighing 2.254 kg, this OEM replacement part is designed to provide powerful and durable solutions.
ROCKER ARM SHAFT - 21294973 suitable for Volvo/Volvo Penta engines
Reliable Rocker Arm Shaft for Your EnginesDiscover our rocker arm shaft, suitable for Volvo/Volvo Penta engines and featuring the comparison number 21294973, an essential OEM replacement part for the valve train components. This product ensures maximum efficiency for your diesel or gas-powered engines in marine or stationary applications. Our replacement parts are tailored to meet the strict demands of professional users.
ROCKER ARM SHAFT - 21294972 suitable for Volvo/Volvo Penta engines
Rocker arm shaft with comparison number 21294972Discover our rocker arm shaft (comparison number: 21294972), which provides an essential function in the valve train. This replacement part weighs 1.515 kg and ensures smooth operation of machines, particularly in the marine technical field. With this rocker arm shaft, you secure the longevity of your equipment.
ROCKER ARM - 21266310 suitable for Volvo/Volvo Penta engines
Rocker Arm for High-Performance EnginesDiscover our rocker arm, an essential component in the valve train, suitable for Volvo/Volvo Penta engines. With the comparison number 21266310, we ensure that you receive a precisely matched OEM replacement part that meets your requirements. Our OEM replacement parts provide quality and reliability for your engine technology.Precision for Efficient PerformanceThe rocker arm weighs 1.74 kg and is designed to meet the high demands of marine and stationary applications. This valve train component is crucial for the smooth functionality of your engines and ensures that performance and efficiency are maximally realized.
ROCKER ARM - 21260905 suitable for Volvo/Volvo Penta engines
Rocker Arm Comparison Number 21260905 DiscoverDiscover our OEM replacement part, the rocker arm with comparison number 21260905, designed for Volvo/Volvo Penta engines. This product is designed to enable precise control of the engine valves. Weighing 0.782 kg, the rocker arm is robust and efficient to install.Functionality and Use of the Rocker ArmThe rocker arm plays a crucial role in the valve train and contributes to the optimal performance of engines. This OEM replacement part ensures smooth operations in engines suitable for Volvo/Volvo Penta applications. With our 25 years of experience, we offer replacement parts in OEM quality at competitive prices, helping you extend the lifespan of your drive systems.
VALVE CAP - 21250646 suitable for Volvo/Volvo Penta engines
Reliable Valve Cap as an Important ComponentThe valve cap, comparison number 21250646, is an essential OEM replacement part, compatible with Volvo/Volvo Penta engines. This product weighs only 0.003 kg and ensures precise function in the valve train. Trust in our extensive experience and equip your machines with this component to benefit from optimal performance characteristics.OEM Replacement Parts: Quality that ConvinsWhen choosing replacement parts, quality is crucial. Our valve cap, compatible with Volvo/Volvo Penta engines, is a premium product that impresses with its reliability. By opting for OEM replacement parts, you gain security and can prevent failures that often accompany inferior aftermarket components. Rely on first-class parts that are specifically compatible.
ROCKER ARM - 21243114 suitable for Volvo/Volvo Penta engines
Precise Rocker Arm for Optimal Engine PerformanceDiscover our rocker arm with the reference number 21243114, an essential component in the category of valve train components. This product is ideally suited to optimize the performance of engines that are compatible with Volvo/Volvo Penta. By using this OEM replacement part, you enhance the efficiency of your entire drivetrain.
ROCKER ARM - 21242550 suitable for Volvo/Volvo Penta engines
Versatile Rocker Arm for High-Performance EnginesDiscover the rocker arm with the comparison number 21242550, a precise product that provides essential valve train components in your engine. This OEM replacement part is your optimal choice to ensure the efficient operation of engines. The comparison number 21242550 is your key to quality and reliability.
ROCKER ARM - 21242533 suitable for Volvo/Volvo Penta engines
Suitable Component: Rocker Arm Comparison Number 21242533Discover the rocker arm with the comparison number 21242533, an essential product in the group of valve train components. This component ensures that all movement processes in the engine harmonize efficiently. The rocker arm is compatible with Volvo/Volvo Penta engines and is ideal for applications in demanding environments.Easy Installation for Optimal Engine PerformanceWeighing only 0.25 kg, our rocker arm can be easily mounted and secures the essential functionality of your engine. This OEM replacement part is specifically designed for Volvo/Volvo Penta engines, allowing you to utilize the quality of a brand component for optimizing your engines’ performance.
VALVE HOUSING - 21225033 suitable for Volvo/Volvo Penta engines
Valve Housing - Precise Components for Your ApplicationsDiscover our valve housing (part number: 21225033), designed specifically for engines compatible with Volvo/Volvo Penta. This robust OEM replacement part is one of the essential valve train components and ensures that your engine operates reliably. Rely on quality that supports maximum efficiency!Powerful and Safe in UseWeighing only 0.081 kg, the valve housing is easy to handle without compromising on robustness. These characteristics make the product particularly suitable for use in demanding environments, both in the maritime sector and in stationary applications. Use our OEM replacement part to operate your engines reliably.
VALVE MECHAN.COVER - 21192977 suitable for Volvo/Volvo Penta engines
Excellent Spare Part for Your ApplicationsDiscover the Valve mechan.cover (comparison number: 21192977), the ideal OEM spare part specifically suitable for your engines. This important component plays a crucial role in functionality and performance in marine and stationary applications. Weighing 1.372 kg, the Valve mechan.cover offers a robust solution that meets the demands of demanding applications.Optimal Solution for Volvo/Volvo PentaThe Valve mechan.cover is suitable for Volvo/Volvo Penta engines and enhances the efficiency and reliability of your system. You can rely on top-notch quality that meets the requirements of modern industries. Benefit from high-quality OEM spare parts at a good price-performance ratio!
ROCKER ARM - 21161213 suitable for Volvo/Volvo Penta engines
Optimized Rocker Arm for Performance EnhancementDiscover our product, the rocker arm with the comparison number 21161213, an essential OEM spare part that combines optimization and durability. This component is perfectly suited to support a variety of engines and ensures optimal performance, even under demanding conditions. Weighing only 0.62 kg, this rocker arm offers the ideal balance of functionality and efficiency.Precision for Volvo/Volvo Penta EnginesThe rocker arm is particularly suitable and compatible with Volvo/Volvo Penta engines and demonstrates how important top-quality valve train components are for maximum efficiency. Users who rely on their engines understand that the quality of the spare part directly affects machine performance. Take advantage of OEM spare parts to sustainably secure the efficiency of your machines.
ROCKER ARM - 21160961 suitable for Volvo/Volvo Penta engines
Quality product: Rocker arm for your needsDiscover our quality product, the rocker arm with the comparison number 21160961. This OEM replacement part is specifically designed to ensure optimal functionality for various engines. Weighing 1.09 kg, this rocker arm is an essential component that can be efficiently integrated into modern applications.Suitable for Volvo/Volvo Penta enginesThe rocker arm is an indispensable OEM replacement part that has been developed for Volvo/Volvo Penta engines. This supports smooth valve control and extends the lifespan of your engines.
ROCKER ARM - 21160845 suitable for Volvo/Volvo Penta engines
Reliable Rocker Arm - Your Ideal OEM Replacement PartDiscover our product, the rocker arm with the comparison number 21160845. This OEM replacement part belongs to the category of valve train components and is specifically designed to provide optimal performance. The rocker arm is suitable for Volvo/Volvo Penta engines and ideally supports you in various applications, as it offers reliable functionality.Amazing Functionality for EnginesOur rocker arm with the comparison number 21160845, which has a weight of 1.23 kg, impresses with its stability and lightness. This replacement part is excellent, as it is suitable for Volvo/Volvo Penta and meets high technical standards in the field of engine technology. Your investment in quality will pay off through the outstanding performance of the product.
VALVE MECHAN.COVER - 21134636 suitable for Volvo/Volvo Penta engines
Valve Mechan. Cover as a Customized SolutionDiscover the Valve mechan.cover with the comparison number 21134636, which is particularly suitable for Volvo/Volvo Penta engines. Manufactured as an OEM replacement part, this product offers the highest quality and reliability. Parts that are compatible with OEM are designed to ensure a definitive fit.Robust Performance and EfficiencyWeighing 3.966 kg, this Valve mechan.cover impresses with its solid construction, making it ideal for the demands of marine and stationary applications. It enhances the efficiency of your engines and increases operational cost-effectiveness. Moreover, the construction is performed to the highest standards valued in the industry.
VALVE MECHAN.COVER - 21134620 suitable for Volvo/Volvo Penta engines
Valve Mechan. Cover compatible with Volvo/Volvo Penta enginesDiscover the valve mechan.cover with the comparison number 21134620 – an essential product for the efficient performance of engines. This valve mechan.cover falls under the category of valve train components and has been specifically developed for your current requirements. As an important OEM replacement part, it ensures that your engines operate smoothly.Quality products for high-performance enginesThis valve mechan.cover is perfectly compatible with Volvo/Volvo Penta engines and offers the quality you expect from OEM replacement parts. With a balanced weight of 6.4 kg, it meets all requirements for robustness and stability, even under extreme conditions.
ROCKER ARM - 21132292 suitable for Volvo/Volvo Penta engines
Rocker Arm – Comparison Number 21132292Discover our rocker arm OEM replacement part, marked with the comparison number 21132292. This product is suitable for Volvo/Volvo Penta engines and offers you the reliability you need for your applications. Weighing 1.823 kg, the rocker arm is designed for durability and efficiency, ensuring stable valve operation.Careful Quality for Volvo/Volvo Penta EnginesThe rocker arm, an important OEM replacement part, ensures that your engines operate efficiently. This product meets the demanding requirements of engine development and provides excellent performance. Trust in the quality of this replacement part, specifically designed for applications in industrial and maritime fields.
VALVE MECHAN.COVER - 21095024 suitable for Volvo/Volvo Penta engines
Precise Replacement Part: Valve mechan.coverThe valve mechan.cover with the comparison number 21095024 is an essential OEM replacement part designed to meet specific requirements. This product is suitable for Volvo/Volvo Penta engines and offers the perfect solution for effective valve train control. Weighing 6.695 kg, the valve mechan.cover is characterized by its robustness and durability.High-Quality OEM Replacement PartsAs an OEM replacement part, this product ensures that you receive the quality and performance expected from renowned manufacturers. The valve mechan.cover is ideally suited for applications in various industrial and marine segments, making it an optimal product. Quality is more than just a word at MOPA Motorparts – it is a corporate principle that we uphold in the second generation.
ROCKER ARM - 21089229 suitable for Volvo/Volvo Penta engines
Precision with the Rocker Arm: Comparison Number 21089229Our rocker arm (comparison number 21089229) is the perfect OEM replacement part for the highest demands. This exceptionally high-performing component ensures torque and maximum efficiency in the valve train. Rely on the tested quality and the precise fit of our product.
Function and benefits
The valve train transfers motion from the camshaft to the valves. It includes parts like pushrods, lifters, rocker arms, valve springs and guides. These engine valve components must work in perfect synchronization to ensure proper engine breathing. Key benefits of optimized valve train parts include:
- Precise valve timing and improved combustion efficiency
- Reduced wear and friction under high RPM or load
- Stable performance and lower emissions
Especially in diesel engines, valve train stability is crucial for handling high compression ratios and extended operating cycles.
Applications and system design
Valve train components vary based on engine type (OHV, OHC, DOHC) and application. In marine and industrial engines, components are often designed for durability, corrosion resistance and easy maintenance. Cam profiles, valve clearances and spring tension all influence system behavior and must be matched precisely to the engine’s operating profile.
We supply high-performance engine valve components suitable for MTU, MAN, Deutz, MWM and Volvo Penta engines – with OEM-quality and materials for long service life in harsh operating environments.
Maintenance and replacement
Valve train parts are subject to mechanical wear, thermal expansion and fatigue. Over time, lifters may stick, springs may weaken, and rocker arms may develop play. Regular inspection and preventive replacement of valve train parts helps maintain engine performance and avoid costly failures.
FAQ
What is a valve train?
A valve train is the system of components that controls the opening and closing of an engine’s intake and exhaust valves. It includes the camshaft, lifters, pushrods, rocker arms, valve springs and related parts. The valve train ensures that air and fuel enter and exit the combustion chamber at the right time.
When should valve train components be replaced?
Valve train components should be checked during major engine overhauls or if there are symptoms such as ticking noises, poor compression, rough idling, or loss of power. Worn parts can lead to timing issues, valve damage or engine failure.
Are valve train parts the same for all engines?
No. Valve train designs vary based on engine architecture (e.g., overhead cam vs. pushrod), operating speed, and intended application. Industrial and marine engines often use more robust materials and heavier-duty valve train components to withstand continuous use.