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 - 81960020152 suitable for MAN D engines
Plug suitable for MAN D enginesDiscover our plug with the reference number 81960020152, which has been specifically developed and is perfectly suitable for MAN D engines. This high-quality OEM replacement part belongs to the group of locking parts and ensures that your engines function optimally and operate reliably in the long term.
PLUG - 81960020103 suitable for MAN D engines
Precision through Comparison Number 81960020103Discover our plug with the comparison number 81960020103. This product is an indispensable OEM replacement part specifically designed for use in engines. Weighing only 0.008 kg, this plug is easy to install and integrates seamlessly into your system.Quality that convinces – Suitable for MAN D EnginesOur plug is suitable for MAN D engines and meets the highest standards. Each OEM replacement part is manufactured under strict internal controls, so you can rely on its reliability and longevity. This precision enables you to maximize the efficiency of your engines and minimize failures.
PLUG - 81960020098 suitable for MAN D engines
Plug with Comparison Number 81960020098Discover the plug with the comparison number 81960020098 – an essential OEM spare part. This product from the group of locking parts is designed for optimal functioning in your engines. The plug weighs only 0.01 kg while offering maximum robustness and efficiency.
PLUG - 81960020075 suitable for MAN D engines
Excellent Plug for Your ApplicationDiscover our plug, which is listed under the comparison number 81960020075. This product is designed as a replacement part suitable for MAN D engines. Weighing only 0.004 kg, it is lightweight and easy to install. As part of the locking parts category, it offers the reliability you expect from an OEM replacement.Tailored Solutions for MAN D EnginesOur plug is perfectly suitable for MAN D engines and delivers optimal performance in marine and stationary applications. The meticulous craftsmanship and precisely tuned fit make this OEM replacement a crucial component for the smooth operation of your engine.
PLUG - 81960020074 suitable for MAN D engines
Robust and Reliable: Plug with Comparison Number 81960020074Discover the plug with the comparison number 81960020074, which is perfectly suited for your requirements. This OEM spare part belongs to the group of locking parts and offers a reliable solution for engines used in marine and stationary applications. With a weight of only 0.001 kg, it ensures easy handling.
PLUG - 81960020070 suitable for MAN D engines
Plug – Comparison Number 81960020070Our plug with the comparison number 81960020070 is an indispensable product in the category of locking parts. This replacement part has been specifically designed to be perfectly suitable for MAN D engines, combining compact dimensions with robust performance at a minimal weight of just 0.001 kg.Quality and Reliability for EnginesThe use of replacement parts like our plug ensures that your engine operates in optimal condition. This replacement part suitable for MAN D engines meets the highest quality standards that you can expect from a traditional family-owned company like MOPA Motorparts. As a second-generation company, we share our commitment to top-notch quality in every single component.
PLUG - 81960020069 suitable for MAN D engines
Premium Material for Your RequirementsThe plug with the comparison number 81960020069 is an essential replacement part that is precisely tailored to the needs of engines. This product has been made from durable materials to optimize the performance of your machines. It belongs to the category of locking parts and offers an excellent solution for all requirements.Suitable for MAN D EnginesThis OEM replacement part is specifically suitable for MAN D engines. With the quality of our OEM replacement parts, you receive a product that fits your application perfectly. Every plug compatible with MAN D is manufactured according to strict quality standards, ensuring optimal functionality and reliability in various operating conditions.
PLUG - 81960020033 suitable for MAN D engines
Versatile Plug for MAN D EnginesDiscover our plug with the comparison number 81960020033. This robust product is an essential spare part that is perfectly suited for MAN D engines. As part of the group of locking parts, it is designed to meet the highest demands in marine and stationary applications. Weighing only 0.002 kg, it brings lightness and efficiency to your applications.OEM Spare Parts in Original Equipment Manufacturer QualityOur plug is an OEM spare part that combines the highest manufacturing standards. Each product is carefully produced to ensure that it fits optimally for MAN D engines and supports the performance of your machines. Rely on the quality of these OEM spare parts to minimize your operating costs and reduce downtime.
PLUG - 81960020015 suitable for MAN D engines
Quality with Comparison Number 81960020015Discover our premium plug, listed under the comparison number 81960020015. This versatile product is compatible with MAN D engines and belongs to the category of locking parts. Weighing only 0.003 kg, it optimizes the efficiency of your applications. Designed for the demanding requirements in marine and stationary use, our product offers an ideal solution for your engine management.
PLUG - 81960010526 suitable for MAN D engines
Plug: Your Reliable OEM Spare PartDiscover the plug, comparable to the reference number 81960010526. This OEM spare part is specifically designed to ensure optimal performance in your engine. Weighing only 0.01 kg, it is easy to install and is an essential component for the stability of your machines.Suitable for MAN D Engines: Precise and EffectiveOur plug is suitable for MAN D engines from the Equipment Manufacturer (OEM). Unlike aftermarket offerings, this product provides the quality and fit required for long-lasting engines. Rely on our experience, which we bring to the development of our spare parts as a family-owned business in its second generation.
PLUG - 81960010444 suitable for MAN D engines
Premium Plug compatible with MAN D enginesDiscover our premium plug, an essential locking part that is optimally suited for MAN D engines with the comparison number 81960010444. Weighing only 0.008 kg, this product provides the ideal solution for optimizing your engines in marine and stationary applications.
PLUG - 81960010331 suitable for MAN D engines
Optimal Solution for Demanding ApplicationsDiscover our Plug with the comparison number 81960010331, which serves as an ideal complement for your applications. This product belongs to the group of locking parts and is characterized by its excellent fit. With a lightweight of only 0.002 kg, it is robust and perfectly suited for use in challenging environments.Suitable for MAN D EnginesOur OEM replacement part is suitable for MAN D engines, which means it meets the high-quality standards you need for your machines. Compared to aftermarket solutions, our OEM replacement part offers the highest performance and reliability. This ensures that your engines operate efficiently at all times.
PLUG - 81960010120 suitable for MAN D engines
Plug suitable for MAN D enginesDiscover our plug, designed as an OEM replacement part (comparison number: 81960010120) for your needs in marine and stationary applications. Weighing only 0.004 kg, this product impresses with excellent precision and reliability and is an essential component suitable for MAN D engines.
PLUG - 81960010082 suitable for MAN D engines
Reliable Plug for EnginesThe plug with the comparison number 81960010082 is the optimal product for those who value performance and quality. This product belongs to the group of locking parts and is characterized by reliability and a long lifespan. Weighing only 0.01 kg, it provides a practical solution for engines and ensures safe application.Suitable for MAN D EnginesOur plug is suitable for MAN D engines and offers a precise fit. As an OEM replacement part, it ensures that your engines operate smoothly and efficiently. Quality and development are our top priorities to meet the highest demands of our B2B customers.
PLUG - 81960010039 suitable for MAN D engines
Premium Plug Suitable for MAN D EnginesDiscover our selected plug (comparison number: 81960010039), which has been developed as an OEM replacement part suitable for MAN D engines. This product belongs to the category of locking parts and offers excellent fit and high durability for applications in marine and stationary engines.Quality and OEM StandardsOur plug meets the highest quality standards and is a true OEM replacement part specifically designed for engines. The comparison number 81960010039 ensures that you receive a reliable product that supports the optimal functionality of your engine and extends its lifespan.
PLUG - 81960010029 suitable for MAN D engines
Robust and Powerful – Plug for EnginesDiscover our plug (comparison number: 81960010029), specifically designed to harmonize optimally with MAN D engines. As an OEM replacement part, this product offers the highest quality and durability, ensuring excellent performance for your engines. Weighing only 0.01 kg, this product is easy to handle and simple to install, increasing the efficiency of your operations.Suitable for MAN D Engines – Reliable QualityOur OEM replacement parts, including this plug, are suitable for MAN D engines and meet the highest demands for reliability. Compared to aftermarket solutions, our products offer the safety that only authentic parts can provide, making them the optimal choice for your requirements in marine and stationary technology. Trust the right OEM replacement part for long-term functionality of your systems.
PLUG - 81960010003 suitable for MAN D engines
Premium Plug for Your ApplicationsDiscover our plug that is suitable for MAN D engines. With the comparison number 81960010003, you receive a top-quality OEM replacement part that is valued in the industry for its reliability. This product is specifically designed to meet the requirements of diesel and gas engines and adheres to the highest standards of the replacement parts industry.Lightweight and EfficientOur plug weighs only 0.001 kg, making handling and installation effortless. The OEM replacement part not only ensures a precise fit but also contributes to the optimal performance of your engines. In many critical applications, both in marine and stationary technology, this component is indispensable.
PLUG - 81779710041 suitable for MAN D engines
Innovative Plug for Your ApplicationsDiscover our reliable plug with the comparison number 81779710041, specially developed to provide optimal performance. This product is suitable for MAN D engines, making it the ideal replacement part for use in demanding environments. Weighing in at 0.17 kg, it offers remarkable robustness and durability.OEM Replacement Parts for Your RequirementsAs a provider of OEM replacement parts, we focus on quality and fit. Our plug with the comparison number 81779710041 meets all high industry standards and ensures the optimal function of your engines. The fit precision especially makes this product indispensable in all areas where reliability is essential.
PLUG - 81731220067 suitable for MAN D engines
Reliable Plug with Comparison Number 81731220067Discover our plug, which is marked with the comparison number 81731220067. This product is an essential locking part that functions optimally in engines. Trust in the quality of our OEM replacement parts, which provide you with a perfect fit to meet your efficiency and durability requirements.
PLUG - 81668110002 suitable for MAN D engines
Reliable Plug with Comparison Number 81668110002Discover our reliable Plug with the comparison number 81668110002, specifically designed to optimize the performance of your suitable for MAN D engines. This product belongs to the category of Locking parts and offers an ideal fit. With a weight of only 0.01 kg, it is lightweight and easy to install.OEM Replacement Parts for PrecisionOur OEM replacement part is the optimal choice to enhance your engine's efficiency. This Plug is suitable for MAN D engines and meets the high demands placed on engines in maritime as well as stationary applications. Choose parts from the Original Equipment Manufacturer (OEM) to ensure maximum performance.
PLUG - 81637450032 suitable for MAN D engines
Plug: Your Reliable Locking PartDiscover our OEM replacement part, the Plug with the comparison number 81637450032. This precisely manufactured product is a critical locking part that is ideally suited to ensure the functionality of your engines. Weighing only 0.004 kg, it is not only lightweight but also versatile in its applications.Suitable for MAN D Engines – Quality That ConvinceThis Plug is specifically designed to be suitable for MAN D engines and meets the high standards you expect from an OEM replacement part. Thanks to its excellent workmanship and adaptation to the demands of diesel and gas engines, it is the perfect choice for applications in marine and stationary sectors as well as in locomotives.
PLUG - 81619406004 suitable for MAN D engines
Precise Plug for MAN D EnginesEnhance the efficiency of your engines with our Plug suitable for MAN D Engines. The comparison number 81619406004 ensures that you always find the optimal solution when purchasing. Weighing only 0.01 kg, this product impresses with its compact design and precise functionality, which is essential for a secure connection.The Role of the Comparison NumberThe comparison number 81619406004 is the key to selecting the right OEM spare part. Our OEM spare parts are specifically designed to maximize the performance and reliability of your engines. Trust in quality that meets the manufacturer's requirements and has proven itself in practice.
PLUG - 81511440002 suitable for MAN D engines
Precise Plug for EnginesDiscover our plug, marked with the comparison number 81511440002. This product is an indispensable locking part, specifically designed to keep your engines in excellent condition. The compact dimensions and lightweight of only 0.001 kg make the plug particularly user-friendly and easy to install.Suitable for MAN D EnginesOur plug is perfectly suited for MAN D engines and ensures maximum performance. Through careful manufacturing, we ensure that this OEM spare part meets the strict standards and requirements of the market. Benefit from the durability that allows you to avoid costly downtime.
PLUG - 81461130117 suitable for MAN D engines
Plug with Comparison Number 81461130117The plug with the comparison number 81461130117 is an essential OEM replacement part specifically designed for MAN D engines. Weighing only 0.001 kg, this product stands out due to its lightweight and robustness, allowing for easy installation and handling.
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.