Locking parts – secure fastening for engines and machinery
Locking parts are essential for ensuring that fasteners and mechanical assemblies remain secure under load, vibration and thermal stress. In engines, turbines, marine systems and industrial equipment, locking parts prevent critical components from loosening during operation – a key factor for safety, durability and system integrity.
Choose from following:
PLUG - 984376 suitable for Volvo/Volvo Penta engines
Excellent Plug with Comparison Number 984376 Discover our replacement part suitable for Volvo/Volvo Penta engines with comparison number 984376. This plug meets the highest standards of quality and performance and is specifically designed to meet the requirements of diesel and gas engines in marine and stationary applications. Weighing only 0.009 kg, it is the optimal solution for business operations where reliability and precision are crucial.
PLUG - 984375 suitable for Volvo/Volvo Penta engines
Excellent Product Compatible with Volvo/Volvo Penta EnginesDiscover our top-quality Plug with the comparison number 984375, specifically designed for Volvo/Volvo Penta engines. This product from the category of Locking parts ensures excellent functionality for your diesel and gas engines. With a weight of only 0.015 kg, handling is made easier while still providing robust performance.
PLUG - 984053 suitable for Volvo/Volvo Penta engines
Universal Plug Suitable for Your Engine SolutionsDiscover our OEM replacement part Plug with the comparison number 984053, a crucial component categorized under Locking parts. This product provides you with an ideal solution for the maintenance of your engines. The Plug is manufactured to the highest standards to ensure perfect fit accuracy. Rely on the quality-tested components that undergo strict internal controls.
PLUG - 983017 suitable for Volvo/Volvo Penta engines
Powerful Plug for Your Engines Discover our OEM spare part with the comparison number 983017 – a plug that has been specifically designed to fit perfectly into your suitable for Volvo/Volvo Penta engines. This product belongs to the category of locking parts and impresses with its excellent fit and stability. Rely on this component, which is suitable for optimal performance in marine and stationary applications.Precise Specifications for Engines The plug weighs only 0.001 kg and offers you easy handling. It has been designed for Volvo/Volvo Penta and ensures that your engines operate reliably. With this combination of lightness and robustness, it is the ideal OEM spare part to maximize the performance of your engine applications.
PLUG - 982365 suitable for Volvo/Volvo Penta engines
Optimal Plug for Your EnginesDiscover our Plug, specifically designed and marked with the comparison number 982365. This product is ideal for use in tight technical constructions and is classified as an OEM replacement part within the popular group of Locking parts. Rely on the quality that becomes evident during the assembly and use of your engines.Special Features of the OEM Replacement PartThe Plug is perfectly compatible with Volvo/Volvo Penta engines and provides a secure connection. With a lightweight of only 0.084 kg, it allows for easy handling while meeting the highest demands for precision and durability. Our OEM replacement parts stand for quality that reliably performs in marine and stationary applications.
PLUG - 982364 suitable for Volvo/Volvo Penta engines
Excellent Fit of Plug 982364Discover the plug with the comparison number 982364, a replacement part specially designed for applications suitable for Volvo/Volvo Penta engines. This precisely manufactured product from the group of locking parts stands out due to its high quality of workmanship and meets all requirements for modern engine applications.Optimization Factor for EnginesWeighing only 0.044 kg, the plug not only ensures easy handling but also effectively supports efficiency in various applications. The design, therefore suitable for Volvo/Volvo Penta engines, ensures that it can be seamlessly integrated into your existing engine technology to significantly extend its lifespan.
PLUG - 982363 suitable for Volvo/Volvo Penta engines
PLUG with the comparison number 982363 suitable for Volvo/Volvo Penta engines
PLUG - 982293 suitable for Volvo/Volvo Penta engines
Robust Plug for Efficient ApplicationsDiscover our Plug, comparison number 982293, specifically suitable for Volvo/Volvo Penta engines. This high-quality OEM spare part belongs to the group of locking parts and ensures an exact fit and reliable functionality. With a lightweight of just 0.054 kg, this product is ideal for marine and stationary applications.Excellent Quality of OEM Spare PartsThe OEM spare parts are characterized by top-notch quality, specifically designed for the requirements of Volvo/Volvo Penta engines. Each part is meticulously crafted to meet the highest standards in precision and durability. This plug is a crucial component for the smooth operation of your engines used in industrial or marine settings.
PLUG - 982121 suitable for Volvo/Volvo Penta engines
Plug suitable for Volvo/Volvo Penta engines Discover our plug with the comparison number 982121, the perfect product for those who require maximum quality and precise fit. This OEM replacement part, weighing only 0.048 kg, offers effortless installation and reliable operation in various demanding applications. Optimally designed, it ensures the performance you expect.Comparison number 982121: Perfect solution for your enginesWith the comparison number 982121, this product provides a precise fit that is essential for professionals and businesses. Suitable for Volvo/Volvo Penta engines, this component offers excellent durability and performance. Rely on our OEM replacement parts to ensure the functionality of your engines at all times.
PLUG - 981965 suitable for Volvo/Volvo Penta engines
PLUG with the comparison number 981965 suitable for Volvo/Volvo Penta engines
PLUG - 981763 suitable for Volvo/Volvo Penta engines
Excellent Plug with Comparison Number 981763Discover the plug with the comparison number 981763, which is ideal for various motor-operated applications. This product impresses not only with its functional practicality but also with a weight of just 0.009 kg, allowing for efficient handling.Suitable for Volvo/Volvo Penta EnginesThe plug 981763 is designed to fit Volvo/Volvo Penta engines. By using OEM spare parts, you benefit from top-notch quality and optimal fit. Each OEM spare part is designed to seamlessly integrate into your systems and provide maximum efficiency.
PLUG - 981749 suitable for Volvo/Volvo Penta engines
New Engine Helper: Plug 981749Our plug with the comparison number 981749 is an essential locking part for your engines. This product ensures flawless functionality, suitable for Volvo/Volvo Penta engines. Weighing only 0.009 kg, it offers reliable performance and durability in marine and stationary applications.
PLUG - 981713 suitable for Volvo/Volvo Penta engines
Top-Quality Plug with Comparison Number 981713Discover the Plug with the comparison number 981713, an essential component for suitable for Volvo/Volvo Penta engines. This excellent choice enhances the reliability of your engines and ensures their performance in marine and stationary applications. Count on this part to enable uninterrupted operation.
PLUG - 981280 suitable for Volvo/Volvo Penta engines
Plug – OEM Replacement Part Suitable for Volvo/Volvo PentaDiscover our plug with the comparison number 981280, which is an extremely valuable locking part developed for Volvo/Volvo Penta engines. Weighing only 0.058 kg, this product offers optimal fit and maintains high quality standards to ensure the efficiency of your diesel or gas engine.Quality of OEM Replacement PartsOur plug belongs to the category of OEM replacement parts that provide the reliability and durability you expect from a quality-conscious manufacturer. Compared to aftermarket products, our OEM replacement parts ensure that you acquire proven performance. Rely on the comparison number 981280 for medical precision and decades of experience in the replacement part market.
PLUG - 981245 suitable for Volvo/Volvo Penta engines
Precision and Quality: The Plug 981245Discover our plug with the reference number 981245, an essential part for your engines. This replacement product offers you the necessary quality for smooth operation and is suitable for Volvo/Volvo Penta engines. With a low weight of only 0.03 kg, the plug is lightweight yet robust enough to meet the demands of marine and stationary applications.
PLUG - 981193 suitable for Volvo/Volvo Penta engines
Premium level with the plug 981193Discover our plug (comparison number: 981193), suitable for Volvo/Volvo Penta engines. This specially designed product belongs to the category of locking parts and stands for durability and reliability that you can expect from an OEM replacement part. Weighing only 0.023 kg, you will find it easy to integrate this replacement part into your existing systems.Reliability and quality in OEM replacement partsOur products are known as OEM replacement parts. The plug 981193 is a perfect solution to maximize the efficiency of your machines. Rely on the precision and excellent material properties of these parts, which allow for a secure integration into your motorized systems.
PLUG - 980573 suitable for Volvo/Volvo Penta engines
First-Class Plug – Comparison Number 980573Discover our first-class plug with the comparison number 980573. This product belongs to the group of locking parts and is reliable in applications suitable for Volvo/Volvo Penta engines. With a low weight of 0.066 kg, it impresses with efficiency and high-quality workmanship.OEM Replacement Parts – Quality for Your ApplicationsRely on OEM replacement parts that provide a precise and durable solution for your engines. Unlike aftermarket products, these parts ensure the perfect fit and best performance, specifically tailored to your requirements. Our plug is suitable for drive systems in commercial applications and ensures long-term performance.
PLUG - 979947 suitable for Volvo/Volvo Penta engines
Excellent Plug: Reference Number 979947 Experience the top-notch plug with reference number 979947, designed specifically for your needs. This product weighs only 0.044 kg and offers practical and efficient handling as well as reliable performance in applications.
PLUG - 978346 suitable for Volvo/Volvo Penta engines
Precise Plug with Reference Number 978346The Plug with the reference number 978346 is an excellent choice for engines that combine performance and reliability. As a locking part, it provides the foundation for proper function in various applications. This precisely manufactured product meets all requirements for intensive use.Suitable for Volvo/Volvo Penta EnginesOur Plug is suitable for Volvo/Volvo Penta engines and ensures optimal locking part compatibility. Weighing only 0.015 kg, this component ensures that the overall performance of the engines is not compromised and maximum efficiency is achieved.
- 978130 suitable for Volvo/Volvo Penta engines
Discover the product suitable for Volvo/Volvo Penta enginesThe plug with the comparison number 978130 is an essential OEM spare part that you need in your workshop. This spare part is compatible with engines from well-known manufacturers and is particularly valuable for the maintenance of your equipment. Weighing only 0.004 kg, the plug allows for easy handling during installation.
PLUG - 977917 suitable for Volvo/Volvo Penta engines
First-Class Plug: Comparison Number 977917Discover our plug with the comparison number 977917, specifically designed and suitable for Volvo/Volvo Penta engines. This essential locking part ensures reliable function and performance of your engines – ideal for applications in marine and stationary use. With a lightweight of only 0.004 kg, the plug is optimal for delivering efficient solutions.OEM Replace Parts in Original Equipment QualityOur product range includes OEM replace parts that meet the high standards recognized by industry professionals. Trust in the brand experience of MOPA Motorparts – your partner for quality-tested replace parts. Over 1 million replace parts are available in our assortment, and you will always find what is suitable for your needs.
PLUG - 977540 suitable for Volvo/Volvo Penta engines
Essential Product: Plug with Comparison Number 977540Discover our renowned plug with the comparison number 977540, categorized under locking parts. This product impresses with its quality and is an essential OEM spare part that helps you maintain the optimal performance of your machines. The plug is specifically designed for Volvo/Volvo Penta engines, ensuring that they operate reliably.High Performance and Reliability: The PlugWeighing only 0.002 kg, this plug is not only handy but also easy to install. It has been developed to meet the most demanding requirements in engines, providing an effective solution for your needs. The use of OEM spare parts means you can rely on a high standard without straining your budget.
PLUG - 974689 suitable for Volvo/Volvo Penta engines
Precise OLED Replacement Part: Comparison Number 974689Discover our plug, equipped with the comparison number 974689, that is perfectly suited for your needs. This premium product is manufactured as an OEM replacement part and ensures that your engines deliver the highest performance.Compatible with Volvo/Volvo Penta EnginesOur plug is precisely designed to fit Volvo/Volvo Penta engines, meeting the specific requirements of these renowned manufacturers. Weighing only 0.016 kg, this OEM replacement part not only provides an ideal fit but also significantly contributes to the efficiency of your engines.
PLUG - 974683 suitable for Volvo/Volvo Penta engines
High-Quality Plug Suitable for Volvo/Volvo Penta EnginesOur plug with the comparison number 974683 is an essential OEM replacement part specifically designed for engines compatible with Volvo and Volvo Penta. This product falls under the category of locking parts and impresses with its precise fit and functionality. Weighing only 0.002 kg, the plug is both lightweight and highly effective, making it ideal for various applications.OEM Replacement Parts for Optimal PerformanceThe plug is suitable for Volvo/Volvo Penta engines and ensures reliable function. Compared to aftermarket parts, you can fully rely on the outstanding quality standards of our OEM replacement parts. External influences are less problematic when using components that are designed for your engines.
Function and benefits
Locking parts are used to fix bolts, nuts, shafts or rotating elements in place. They protect against unintentional movement or unscrewing due to vibration, pressure changes or torque fluctuations. Benefits include:
- Secure hold of mechanical connections
- Increased system safety and reduced failure risk
- Improved service intervals and reliability
In high-performance diesel engines or marine drives, locking systems are critical to prevent loosening of vital components under continuous vibration and extreme temperatures.
Types of locking parts
Our range of locking parts includes:
- Locking washers (e.g. serrated, tab or spring washers)
- Locknuts and self-locking nuts
- Locking clips and retaining rings
- Split pins, cotter pins and safety wires
These components are available in materials such as spring steel, stainless steel, and corrosion-resistant alloys – ideal for use in marine environments or thermal cycling conditions.
Applications in marine and industrial systems
Locking parts are used in crankshaft assemblies, valve trains, coupling flanges, pump mounts and exhaust systems. In maritime settings, reliability under constant vibration and salt exposure is key. We offer OEM-locking solutions suitable for MTU, MAN, Volvo Penta, Deutz and MWM engines – suitable for both new builds and overhauls.
FAQ
What are locking parts used for?
Locking parts secure mechanical fasteners and rotating elements, preventing loosening due to vibration, pressure or thermal expansion. They are vital in engines and machinery to maintain operational safety and performance.
How do I choose the right locking part?
Selection depends on load, operating temperature, vibration level and component type. In high-stress environments, self-locking nuts or tab washers are often preferred over standard fasteners.
Are locking parts reusable?
Some locking parts like tab washers or safety clips are designed for single use, while others like locknuts or spring washers can be reused if undamaged. Always follow engine manufacturer guidelines for replacements.