Fittings – connection components for engines & systems
Fittings are essential elements in engine systems, industrial machinery and marine environments. As mechanical connection points, they ensure tight, durable and vibration-resistant links between components. Whether you're dealing with marine fittings for boats or engine fittings for industrial motors, high-quality fittings are critical for maintaining operational safety and performance.
RING UNION - 51981030080 suitable for MAN D-engines
Precise Replacement Part: Ring UnionDiscover the ring union with the comparison number 51981030080, compatible with MAN D engines. This product belongs to the category of fittings and armatures and meets high quality standards, which is reflected in its precise design.
RING UNION - 51981030079 suitable for MAN D-engines
Efficient Solutions for Demanding EnginesThe ring union with the comparison number 51981030079 is an essential component, suitable for MAN D engines. This high-quality OEM replacement part ensures precise fit and durability in marine and stationary applications. Rely on the excellent quality of OEM replacement parts, which provide particularly predictable performance characteristics.
RING UNION 14 MM - 51981030073 suitable for MAN D-engines
Exquisite Replacement Part: Ring Union 14 mmDiscover the Ring Union 14 mm, a top-quality replacement part specifically designed for MAN D engines. The comparison number 51981030073 ensures that this product is perfectly tailored to your requirements. This OEM replacement part offers a precise fit and reliable functionality, ensuring efficient performance of your engine.Convincing Quality of OEM Replacement PartsThe Ring Union weighs only 0.02 kg and is characterized by its robust construction. With top-notch quality, this suitable OEM replacement part ensures that your MAN D engine operates efficiently. Every component meets the highest standards and is ideal for those who rely on unrestricted performance in their engines.
RING UNION - 51981030072 suitable for MAN D-engines
Ring Union – Your Best DecisionDiscover our Ring Union, a top-quality OEM replacement part specifically designed for MAN D engines. With the comparison number 51981030072, this product has been developed to offer the highest quality and reliability. The Ring Union weighs only 0.004 kg, making it both functional and durable.
RING UNION - 51981030068 suitable for MAN D-engines
Discover the Ring Union with Comparison Number 51981030068The ring union with the comparison number 51981030068 meets the highest requirements in the article group fittings and armatures. Weighing only 0.01 kg, you hardly notice that this productive part is integrated into your application.
RING UNION - 51981030065 suitable for MAN D-engines
Reliable Items: Ring Union with Comparison Number 51981030065Discover the ring union with the comparison number 51981030065, which is considered an indispensable product for your engines. This ring union is an OEM replacement part designed to fit MAN D engines. With the best fit and outstanding performance, it ensures that your engines operate efficiently and reliably.Convenient Handling: Weight and ApplicationWeighing only 0.02 kg, this ring union allows for easy handling, making installation a breeze. An effective product that helps you minimize maintenance work on your engines and maximize uptime. Rely on the quality of OEM replacement parts known for their durability.
RING UNION - 51981030064 suitable for MAN D-engines
Discover the Ring UnionDiscover our product, the Ring Union with the comparison number 51981030064. This OEM replacement part is specifically designed to ensure optimal functioning of engines. "Suitable for" MAN D engines, this Ring Union proves to be an indispensable component in your system.Tailored Solution for EnginesThe Ring Union with the comparison number 51981030064 meets the specific requirements of the industry. This OEM replacement part is precisely manufactured and ideally "suitable for" MAN D engines. Rely on the durability and efficiency of the materials, adapted for diesel and gas engines.
RING UNION - 51981030062 suitable for MAN D-engines
Precise Ring Union for MAN D EnginesDiscover our outstanding spare part, the ring union with the comparison number 51981030062, which has been specially designed for use in MAN D engines. The ring union belongs to the product group fittings and armatures and is therefore the optimal product for anyone seeking quality and durability in spare parts supply. Rely on OEM spare parts that offer the highest standards and are optimally tailored to meet the requirements of various applications.
RING UNION - 51981030061 suitable for MAN D-engines
Robust Ring Union for Efficient ApplicationsExperience the precise ring union from the group of fittings and armatures. This essential component provides OEM replacement parts for your applications and ensures long-lasting reliability and optimal functionality. The reference number 51981030061 ensures that this product meets the highest standards and offers an ideal solution that meets your requirements.Exact Dimensions for Various EnginesThe ring union features compact dimensions: a length of 3.3 cm and a width of 3.3 cm with a height of only 1 cm. Weighing merely 0.009 kg, this OEM replacement part is particularly handy and easy to install. The ring union is suitable for the D2842 series as well as the engine type D2842LE410, making it an indispensable element in your operation. Manufactured under strict guidelines, this is a product that enables reliable operation.
RING UNION - 51981030055 suitable for MAN D-engines
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RING UNION - 51981030052 suitable for MAN D-engines
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RING UNION - 51981030044 suitable for MAN D-engines
Precise Ring Union – Your Reliable Spare PartThe ring union with the comparison number 51981030044 is an essential OEM spare part that offers excellent performance for your applications. This product combines precision and reliability and is suitable for MAN D engines, particularly the renowned model D2842. Weighing 0.012 kg and with compact dimensions of 3.5 cm in length and width and 1.3 cm in height, the ring union is the ideal choice to withstand demanding operating conditions.Optimal Application and Excellent QualityAs a product suitable for MAN D engines, the ring union is the perfect addition to your devices. Its special features ensure that the ring union can be optimally integrated into the system to achieve excellent sealing function. Each manufactured OEM spare part is subject to strict internal controls, ensuring that you receive a product that demonstrates maximum functionality. Only in this way can you be confident that your MAN D engines continue to radiate performance and efficiency.
RING UNION - 51981030043 suitable for MAN D-engines
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RING UNION - 51981030041 suitable for MAN D-engines
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RING UNION - 51981030039 suitable for MAN D-engines
Ring Union suitable for MAN D enginesDiscover our ring union with the comparison number 51981030039, an essential OEM replacement part that ensures quality and performance for your engines. Completely compatible with MAN D engines, this product offers an excellent fit and reliable functionality. Weighing only 0.03 kg, the ring union is easy to install, making it an optimal solution for your applications.
RING UNION - 51981030038 suitable for MAN D-engines
Reliable Ring Union for High-Performance EnginesDiscover the compatible with MAN D OEM replacement part, the ring union with the comparison number 51981030038. This component is essential for the smooth operation of diesel and gas engines in both marine and stationary applications.Product Features – Your Ring UnionThe ring union belongs to the product group fittings and armatures and offers you a top-notch solution for engines of all kinds. Rely on our OEM replacement parts, designed for durability and reliability to ensure optimal performance of the engines.
RING UNION - 51981030037 suitable for MAN D engines
Compact Ring Union Compatible with MAN D EnginesDiscover our ring union, an innovative solution for anyone looking for spare parts. With the reference number 51981030037, this product is an essential fitting that assists you in the maintenance of your engines. Specifically designed, it is compatible with MAN D engines as well as the series D2840 and D2842. What are you waiting for? Give your engine the reliability it deserves!
RING UNION - 51981030035 suitable for MAN D-engines
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RING UNION - 51981030034 suitable for MAN D-engines
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RING UNION - 51981030025 suitable for MAN D-engines
Ring Union with Comparison Number 51981030025Discover our product—the ring union, suitable for MAN D engines—with the comparison number 51981030025. This spare part belongs to the category Fittings and Armatures and impresses with the highest precision. Weighing only 0.329 kg, it offers the necessary robustness and lightness you need for the operation of your engines.Reliable OEM Spare Parts for EnginesOur ring union is an OEM spare part manufactured to original equipment quality. This ensures optimal results that maintain the performance level of your engines. The spare part is specifically designed to provide reliable solutions for the demanding conditions of your applications, suitable for MAN D engines.
RING UNION - 51981030024 suitable for MAN D-engines
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RING UNION - 51981030023 suitable for MAN D-engines
Comparison Number 51981030023 – Your Reliable ProductThe ring union with the comparison number 51981030023 is an essential component in the category of fittings and armatures and impresses with its precise construction. This OEM spare part offers an exact fit and high functionality for compatible MAN D engines, making it a crucial choice for maintenance and repair.
RING UNION - 51981030022 suitable for MAN D-engines
Excellent Selection: Ring Union 51981030022Discover the Ring Union, reference number 51981030022, which offers exceptional performance for engines. This OEM replacement part from the category Fittings and Armatures provides you with top-notch quality. Weighing only 0.07 kg, the Ring Union is not only lightweight but also robust enough to withstand the challenges of demanding conditions.Quality for MAN D EnginesThe OEM replacement part is especially important for the maintenance of your machines. Compared to aftermarket products, using our Ring Union, compatible with MAN D, offers unparalleled safety and reliability. Trust in our expertise to ensure the functionality of your MAN D engines.
RING UNION - 51981030016 suitable for MAN D-engines
Ring Union suitable for MAN D enginesDiscover our premium product, the Ring Union with the comparison number 51981030016, which offers optimal solutions for engines. This OEM spare part impresses not only with its outstanding craftsmanship but also with its excellent fit for applications in marine and stationary engines.Quality of OEM spare partsThe Ring Union is suitable for MAN D engines and stands out due to its exclusivity compared to aftermarket products. As an OEM spare part, this product ensures efficient performance of your engines, even under the most demanding conditions.
Function and benefits
Fittings serve as interfaces between hoses, pipes, housings and mechanical units. In engine systems, reliable engine fittings guarantee that fluids, gases and mechanical forces are securely transferred. Typical benefits of using precision-engineered fittings include:
- Secure and leak-free connections even under high pressure
- Resistance to corrosion, vibration and thermal stress
- Compatibility with various systems – from engines to pumps and cooling circuits
In marine environments, fittings must additionally withstand saltwater exposure and continuous load changes, making marine fittings a category of their own in terms of robustness and reliability.
Types and applications of engine and marine fittings
The category of fittings includes threaded connectors, quick couplings, hose connectors, elbows and T-pieces. Depending on the application, these are used in fuel systems, lubrication circuits, hydraulic control systems or exhaust units. In marine settings, boat fittings must also meet international safety and classification standards.
Engine fittings are commonly integrated in high-load environments such as diesel engines, gas turbines and power units. These fittings must be both dimensionally precise and material-optimized to support system pressure and dynamic loads.
Materials and design features
Fittings are typically made from stainless steel, brass, aluminum or composite materials. In some cases, coatings are applied to improve resistance to corrosion or abrasion. Boat fittings, in particular, are often anodized or sealed for protection against marine conditions.
Advanced design features such as O-ring grooves, reinforced walls or vibration dampers improve the safety and lifespan of engine fittings. Depending on the system, fittings may also be part of quick-connect modules or modular armature systems used in motors and armatures.
Replacement and availability
Over time, fittings can become worn or corroded, especially in aggressive environments or under constant pressure. For safety-critical systems such as marine engines, timely replacement is crucial. We supply a broad range of fittings suitable for MTU, Deutz, MAN, Volvo Penta, and MWM engine types.
Whether you're working with engine fittings, boat fittings or components related to motors and armatures, our warehouse ensures fast availability and OEM-level compatibility. Each engine armature or connection unit is carefully selected for durability and ease of installation.
Questions and answers
What is fittings?
Fittings are mechanical components used to connect pipes, hoses or structural elements in engines, industrial systems and marine applications. They are designed to ensure tight, secure and durable connections and are available in many shapes, sizes and materials.
How do fittings work?
Fittings work by mechanically joining two components, often using threads, clamps or pressure seals. In engines and motors, engine fittings maintain the integrity of fluid and air systems, while in boats and ships, marine fittings are essential for safe and corrosion-resistant connections. In the context of motor armatures, fittings help align and stabilize moving parts within dynamic systems.