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 - 445751 suitable for MTU engines
Excellent Plug for Demanding ApplicationsDiscover our OEM spare part, the robust plug with the comparison number 445751. This outstanding product from our category of locking parts offers the highest quality and precision. It is essential for maintenance work on your engines that require optimal functionality.Suitable for MTU EnginesOur plug is specifically designed for MTU engines. This ensures the best fit and durability. Trust in the quality of our OEM spare parts that can be used in demanding applications.
PLUG - 444801 suitable for MTU engines
Excellent Plug – Comparison Number 444801The Plug with the comparison number 444801 is an essential OEM spare part from the category of Locking parts. It provides the perfect solution to enhance the functionality of your engines. This product offers top-notch workmanship and is indispensable for businesses that rely on high performance.Reliable Performance – Suitable for MTU EnginesDesigned for MTU engines, this Plug is specifically developed to meet high demands. With this OEM spare part, you ensure the reliability and efficiency of your machines. Trust our high-quality OEM spare parts, which are ideally tailored to the needs of your company.
PLUG - 444699 suitable for MTU engines
Efficient Plug with Comparison Number 444699Discover our versatile plug, comparable to comparison number 444699. This product stands out for its precision and is ideally suited for your MTU engines. OEM spare parts represent the optimal choice for the highest standards.Suitable for MTU EnginesThe plug is specifically designed to fit MTU engines and offers durability as well as reliable functionality. With this spare part, you ensure optimal performance of your engines.
PLUG - 444618 suitable for MTU engines
First-Class Plug with Comparison Number 444618Discover our plug marked with the comparison number 444618. This OEM replacement part impresses with its durability and adaptability, especially for applications suitable for MTU engines and complementary systems.
PLUG - 444613 suitable for MTU engines
Premium Plug with Comparison Number 444613Discover our versatile plug, which is marked with the comparison number 444613. This OEM spare part ensures you the highest precision and reliability. It is developed to fit MTU engines and provides you with the optimal solution for your requirements.
PLUG - 4279970030 suitable for MTU engines
Tailor-Made Quality: Plug 4279970030Discover our plug, perfectly developed with the comparison number 4279970030. This product stands out for its exceptional fit, allowing optimal integration into your applications. Trust in top-notch OEM replacement parts that meet the highest quality standards.
PLUG - 424715 suitable for Volvo/Volvo Penta engines
Plug with Comparison Number 424715Discover the plug with the comparison number 424715, designed to meet your requirements. This product belongs to the category of locking parts and plays a crucial role in your operational process. Suitable for Volvo/Volvo Penta engines, it supports the flawless functionality of your equipment and contributes to optimizing engine performance. Weighing only 0.041 kg, this OEM spare part is an essential component of your application.OEM Spare Parts for Your NeedsAs a family-owned business in its second generation, we at MOPA Motorparts stand for quality and trust. Our goal is to provide you with the ideal OEM spare parts at competitive prices. The plug is suitable for Volvo/Volvo Penta engines and has been manufactured under stringent quality controls to ensure smooth performance. Discover products that sustainably and efficiently meet your specific requirements.
PLUG - 4239970020 suitable for MTU engines
Exquisite Plug for Use on MTU EnginesDiscover our OEM spare part Plug with the comparison number 4239970020, which possesses top-notch quality and reliability. This product is specifically designed to support the functional integrity of your MTU engines. With this Plug, you are well-equipped to achieve efficient performance.Perfect Fit as the Key to Lasting FunctionThis OEM spare part is suitable for MTU engines and meets the highest standards of our customers. Our structures provide an ideal fit, ensuring that your applications operate smoothly and remain operational for a long time. Rely on the proven quality of this Plug to support your engine technology.
- 4229970130 suitable for MTU engines
Efficient OEM Replacement Part: Plug Comparison Number 4229970130Discover our Plug, the OEM replacement part compatible with MTU engines. With the comparison number 4229970130, this product offers an optimal solution for pipe connections in industrial applications. With a lightweight of only 0.025 kg, you benefit from functionality and durability, which are crucial in daily operations.Foundation for Optimal Engine Performance: Suitable for MTUThe Plug is specifically designed to be compatible with MTU engines and meets the highest standards of original equipment manufacturer quality. This OEM replacement part ensures that your engines operate reliably. When selecting your replacement parts, do not compromise and rely on quality.
PLUG - 41100667 suitable for Volvo/Volvo Penta engines
Precise Components for Your Processes Discover the plug (comparison number: 41100667), an essential OEM replacement part designed for Volvo/Volvo Penta engines. This comparison number allows you to identify the perfect product for your needs and optimize engine performance. Every detail of the plug ensures maximum functionality.
PLUG - 41100274 suitable for Volvo/Volvo Penta engines
Compare Plug: Ideal for Motorized ApplicationsDiscover our plug (comparison number: 41100274), which is characterized by precise processing and reliability. This important product belongs to the category of locking parts, which are essential for the function of your diesel and gas engines. Weighing only 0.023 kg, it offers easy installation and excellent handling to ensure smooth operation.
PLUG - 4079975032 suitable for MTU engines
Premium Replacement Part Suitable for MTU EnginesDiscover the plug with the comparison number 4079975032, which serves as a reliable OEM replacement part. This product is suitable for MTU engines and offers top-notch quality and fit. Using OEM replacement parts ensures you achieve optimal performance and durability for your engines in maritime and stationary applications.
PLUG - 4079975030 suitable for MTU engines
Discover the Plug with Comparison Number 4079975030Discover our plug, equipped with the comparison number 4079975030. This product is perfectly suited to support the functionality of your machines. The component is compatible with MTU engines and offers the reliability you need.Quality of OEM Spare PartsOur OEM spare parts are essential when it comes to parts for engines. With the comparison number 4079975030, we ensure that only parts from the Equipment Manufacturer are available. Rely on tested quality and avoid uncertainties often associated with aftermarket parts.
PLUG - 4039970086 suitable for MTU engines
Reliable Spare Part with Comparison Number 4039970086The OEM spare part, Plug with the comparison number 4039970086, is an important component in the category of Locking parts for various applications. Thanks to the precise construction, this product is optimally tailored to your needs and contributes to durability in demanding environments.Highest Quality for Engines of All TypesThis product is suitable for MTU engines and is characterized by its excellent fit. Our range includes high-quality spare parts that provide efficient performance in your applications. You benefit from a well-thought-out selection that aligns with the industry's requirements.
PLUG - 402G08003/1 suitable for MTU engines
Flexible Plug with Comparison Number 402G08003/1Discover the plug with the comparison number 402G08003/1. This replacement part is designed as an OEM replacement and delivers the quality you need for your applications. In the category of locking parts, it is optimally processed and ensures powerful functionality in your systems.Suitable for MTU EnginesOur plug is suitable for engines from MTU and integrates seamlessly into your existing system. The reliability resulting from the use of premium materials and precise manufacturing secures the efficiency of your applications in marine and stationary technology.
PLUG - 40005R1 suitable for MTU engines
Quality Assurance with Comparison Number 40005R1Discover our product with the comparison number 40005R1, a plug that has been specifically designed. This OEM spare part offers you the reliability you need for your MTU engines. Our plug belongs to the group of locking parts and ensures that it meets the strict requirements for professional applications.
PLUG - 40005082 suitable for Volvo/Volvo Penta engines
Excellent Plug - Your Key to EfficiencyExperience our plug, comparison number 40005082, specially designed to provide optimal benefit. This spare part is an important component in the group of locking parts and ensures smooth operations.Suitable for Volvo/Volvo Penta - Ideal for Your EnginesThe plug is suitable for Volvo/Volvo Penta engines and impresses with functionality and precision. With a feather-light weight of only 0.015 kg, it simplifies installation and maintenance. Rely on OEM spare parts that are perfectly tailored to the specifications of the engines and experience a noticeable performance difference.
PLUG - 3964803 suitable for Volvo/Volvo Penta engines
Precise Plug for Technical ApplicationsDiscover our qualitatively superior plug, which is listed under the comparison number 3964803. This product is specifically designed for the requirements of diesel and gas engines, providing you with safety and functionality. The plug is part of the category locking parts and ensures a perfect solution for your engine challenges.OEM Spare Parts: Superior QualityA crucial feature of the plug is its quality, which corresponds to OEM spare parts. We supply products that are suitable for Volvo/Volvo Penta engines, enabling easy integration without compromising on performance. The use of OEM spare parts is essential, as they comply with manufacturer specifications and help avoid long-term issues often associated with aftermarket solutions.
PLUG - 3964715 suitable for Volvo/Volvo Penta engines
Precision Plug with Comparison Number 3964715The plug with comparison number 3964715 is an essential OEM spare part, suitable for the demanding conditions of compatible with Volvo/Volvo Penta engines. Manufactured with the utmost care, this product offers optimal fit and functionality, which are crucial for use in marine and stationary applications.Quality Product for Engine OperationWeighing only 0.043 kg, this spare part contributes to the efficiency of your systems. As an OEM spare part, it is compatible with engines from renowned manufacturers such as MWM, Mercedes-Benz, Deutz, MAN, MTU, Bosch, and Detroit Diesel. With this component, you are opting for top-notch performance, ideal for various applications!
PLUG - 3963418 suitable for Volvo/Volvo Penta engines
OEM Replacement Part for Engine NeedsDiscover our custom Plug, which is considered an OEM replacement part with the comparison number 3963418. This product is suitable for Volvo/Volvo Penta engines and offers you quality and durability. Rely on our expertise when it comes to selecting the best parts for your drive.
PLUG - 3899970586 suitable for MTU engines
Premium Plug for Optimal Engine Performance The plug with the comparison number 3899970586 is an essential OEM spare part, perfectly suited for efficient applications in engines. This product impresses with a precise fit and the highest quality standards. Use the comparison number 3899970586 to ensure you receive the correct plug.Plug Suitable for MTU Engines We offer the plug that is specifically suitable for MTU engines. This OEM spare part enhances the performance of your engine and ensures reliable functionality in demanding applications. Our products are an ideal solution for longer operating times without compromise.
PLUG - 3889952 suitable for Volvo/Volvo Penta engines
Reliable Plug – Comparison Number 3889952 Discover our reliable plug, comparison number 3889952, an essential OEM spare part specifically designed to meet the requirements of Volvo/Volvo Penta engines. This product from the category of locking parts combines quality with durability. Weighing only 0.055 kg, it is optimally suited for use in marine and stationary engines.Quality and OEM Spare Parts Our products are recognized as OEM spare parts and provide excellent performance. This plug is ideally suited to optimize the efficiency of your engines compatible with Volvo/Volvo Penta. Rely on top-quality spare parts that are specifically designed for demanding applications and meet the highest standards.
PLUG - 3888557 suitable for Volvo/Volvo Penta engines
Efficient Plug for EnginesDiscover our plug with the comparison number 3888557, an essential OEM replacement part that offers perfectly located application possibilities for engines. This product is suitable for Volvo/Volvo Penta engines and ensures excellent functionality. Weighing only 0.022 kg, it simplifies replacement and allows for quick maintenance of your machines.
PLUG - 3887989 suitable for Volvo/Volvo Penta engines
Premium Plug – Ideal Replacement PartDiscover the Plug with the reference number 3887989, an essential OEM replacement part that ensures maximum efficiency in your suitable for Volvo/Volvo Penta engines. Weighing only 0.016 kg, this product ensures that the connections of the engines remain reliable and stable. With the use of top-quality materials, it is your ideal partner for various applications.Suitable for Manufacturers – Engine Technology at Its BestOur Plug is suitable for Volvo/Volvo Penta – known for their outstanding technology and performance. OEM replacement parts like this are crucial for optimizing the functionality of the engines. Rely on this product and equip your work machines with dependable technology.
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.