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.
SCREW CONNECTOR - 81981100031 suitable for MAN D engines
High-Quality Component Suitable for MAN D Engines Our screw connector with the comparison number 81981100031 is a crucial OEM replacement part. This product is suitable for MAN D engines and ensures precise fitment. Through extensive quality checks, we ensure that you can rely on a dependable component optimized for marine and stationary use.
SCREW CONNECTOR - 81981100024 suitable for MAN D engines
Precision Screw Connector for Your RequirementsDiscover our screw connector, an OEM replacement part with the comparison number 81981100024. This product belongs to the group of fittings and armatures and impresses with its precision. The screw connector weighs only 0.02 kg, making it easy to handle and ideal for various engine applications.Ideal for MAN D EnginesThis screw connector is suitable for MAN D engines. The high quality and functionality meet the strict standards of OEM replacement parts, allowing you to rely on its performance. Our product is the optimal solution to enhance the efficiency of your engines and ensure their operability.
CUTTING RING - 81981050022 suitable for MAN D engines
Cutting ring with comparison number 81981050022Discover our product – the Cutting ring with the comparison number 81981050022, suitable for MAN D engines. Our OEM spare part ensures the best fit and durability that you can expect from a top-quality manufacturer.OEM spare parts for optimal performanceWe exclusively offer OEM spare parts that come directly from the Equipment Manufacturers. Unlike aftermarket parts, our products ensure the optimal functionality of your engine. The Cutting ring is an essential spare part designed specifically for applications in MAN D engines.
RING UNION - 81981035012 suitable for MAN D engines
Efficient Ring Union for MAN D EnginesDiscover the ring union with the comparison number 81981035012 – a top-quality fitting designed specifically to be compatible with MAN D engines. Weighing only 0.25 kg, this product is ideal for numerous applications in marine and stationary settings. Trust in the quality that comes with fittings.Reliable Quality Through Internal ControlThe comparison number 81981035012 ensures that this spare part meets the highest standards. Our extensive internal control confirms that the ring union fulfills the required standards, thereby ensuring optimal performance of your engines. Compatible with MAN D engines, this ring union ensures reliability in every application.
RING UNION - 81981035005 suitable for MAN D engines
High-Quality OEM Replacement Part: Ring Union suitable for MAN DDiscover the Ring Union, identified by the comparison number 81981035005, specifically designed for MAN D engines. This product impresses with its top-notch workmanship and durability, making it indispensable for reliable engine performance in demanding applications. Weighing only 0.14 kg, it combines lightness with exceptional robustness.Quality and Reliability for EnginesAs an OEM replacement part, this product offers the highest quality that meets the manufacturer’s standards. This ensures that the Ring Union works optimally for MAN D engines and maximizes their efficiency. Rely on the quality this comparable component provides to keep your engines performing even under extreme conditions.
RING UNION - 81981035003 suitable for MAN D engines
Ring Union for Optimal Engine ApplicationsDiscover the ring union with the comparison number 81981035003, an essential component from the category Fittings and armatures, suitable for MAN D engines. Weighing 0.3 kg, this product meets the highest standards and is ideal for marine and stationary applications.OEM Replacement Parts for Maximum PrecisionThe OEM replacement part ring union ensures an optimal fit and performance that you expect from a manufacturer. Unlike aftermarket products, which often have inaccurate specifications, this replacement part provides a precision that significantly supports the efficiency of MAN D engines. Rely on quality and choose the OEM replacement part that is durable and reliable.
RING UNION - 81981035002 suitable for MAN D engines
Ring Union for Optimal Engine PerformanceDiscover the ring union (comparison number: 81981035002), a tested OEM replacement part, suitable for MAN D engines. Weighing only 0.21 kg, the ring union ensures that all fittings and armatures work together optimally, allowing your engine to function smoothly.
RING UNION - 81981032001 suitable for MAN D engines
Versatile Ring Union for Reliable Engine ApplicationsDiscover the Ring Union (comparison number: 81981032001), an essential OEM spare part for high-performance engines. This product has been specifically designed to maximize performance and efficiency. Weighing only 0.014 kg, it offers the optimal balance between lightness and robustness, making it ideal for use in demanding environments.
RING UNION - 81981030034 suitable for MAN D engines
Reliable Ring Union with Comparison Number 81981030034Discover our product, the Ring Union with the comparison number 81981030034. This OEM spare part will impress you with its reliable performance and is essential for your diesel and gas engines.Suitable for MAN D EnginesThis Ring Union is suitable for MAN D engines and ensures smooth functionality required for operations in marine and stationary applications. Rely on the quality and durability of our OEM spare parts.
RING UNION - 81981030033 suitable for MAN D engines
Stylish OEM Replacement Part: Ring UnionDiscover our OEM replacement part, the Ring Union, with comparison number 81981030033. This precisely manufactured product is compatible with MAN D engines and ensures the optimal functionality of your engine. Rely on the quality of our selection, which has been specifically developed for demanding applications.Suitable for MAN D Engines: Your Reliable PartnerThe Ring Union is an indispensable component, suitable for MAN D engines. In the category of Fittings and Armatures, this product impresses with its fit and durability. Benefit from an OEM replacement part that efficiently supports your engines.
RING UNION - 81981030032 suitable for MAN D engines
Ring Union for Efficient EnginesDiscover the premium product Ring Union, marked with the comparison number 81981030032. This OEM replacement part is essential for optimal performance and reliability in your engines.Suitable for MAN D EnginesThe Ring Union is suitable for MAN D engines and ensures that you do not have to compromise on maintenance. Our OEM replacement parts offer durability and efficiency.
RING UNION - 81981030031 suitable for MAN D engines
Premium Ring Union for MAN D EnginesDiscover our product, the Ring Union with the comparison number 81981030031. This OEM replacement part is suitable for MAN D engines and ensures optimal functionality. Rely on the precise fit that is required for the smooth operation of your applications.Strict Internal Control for Top QualityThe replacement part is manufactured under strict internal controls, ensuring the highest possible standards are met. You can trust that our Ring Union has excellent durability and reliability that you can expect.
RING UNION - 81981030028 suitable for MAN D engines
Ring union with comparison number 81981030028Discover the ring union with the comparison number 81981030028, a product specifically designed for the needs of engines in the marine and stationary sectors. This OEM spare part ensures optimal performance and reliability in your operations.Suitable for MAN D enginesThe ring union is suitable for MAN D engines and ensures precise integration into your system. With our years of experience, we offer you only the best OEM spare parts that meet the highest standards.
RING UNION - 81981030025 suitable for MAN D engines
Reliable Ring UnionDiscover the ring union with the comparison number 81981030025, an OEM replacement part that provides an ideal solution for the needs of engines in marine and stationary applications. This item belongs to the group of fittings and armatures and weighs only 0.02 kg, making it a lightweight yet robust choice.
RING UNION - 81981030019 suitable for MAN D engines
Precision Ring Union with comparison number 81981030019Discover the precisely manufactured product with the comparison number 81981030019. This ring union is specifically designed to fit MAN D engines and meets the highest standards of quality and longevity. Weighing only 0.003 kg, this fitting is ideal for applications in marine and stationary engineering.Suitable for Your High-Performance EnginesOur ring union, compatible with the MAN D series, gives you confidence in the reliability of top-quality components. As an OEM replacement part, it ensures excellent functionality and is compatible with the specific requirements of your MAN D engines. Take this opportunity to equip your engines with top-notch fittings designed to optimize performance.
RING UNION - 81981030017 suitable for MAN D engines
Reliable Product: Ring Union for Your EnginesThe ring union with the comparison number 81981030017 is an essential spare part for any maintenance. This product belongs to the category Fittings and Armatures and impresses with its precise construction. Weighing only 0.12 kg, this component is crucial for the functionality of your engines.Optimal for MAN D EnginesThe ring union is specifically designed and suitable for MAN D engines. As an OEM spare part, it offers an optimal fit and long-term usability. The use of high-quality materials sustainably supports the lifespan of your drive. Trust in the quality associated with OEM spare parts.
RING UNION - 81981030009 suitable for MAN D engines
Robust Ring Union for Your ApplicationsDiscover the ring union with the comparison number 81981030009, an essential component for your engines. This OEM replacement part is suitable for MAN D engines and ensures that your machines operate reliably. The precise craftsmanship of this product provides the best performance you need for marine and stationary applications.Light and Efficient - Ideal for Your NeedsWeighing only 0.02 kg, the ring union can be effortlessly integrated into your existing system. Its thoughtful design ensures efficient performance, allowing you to make the most of your engines. Rely on this product to meet the demands of your applications.
RING UNION - 81981030003 suitable for MAN D engines
High-Performance Ring Union for Marine and Stationary EnginesThe ring union with the comparison number 81981030003 is an OEM replacement part specifically designed for engines used in marine and stationary applications. This product impresses with its high precision and reliability to maximize the performance of your engines. Weighing only 0.2 kg, the ring union is both lightweight and robust, providing an excellent solution for various applications.
T-FITTING - 81942975000 suitable for MAN D engines
T-fitting suitable for MAN D enginesDiscover our T-fitting with the comparison number 81942975000, an indispensable OEM replacement part specifically designed to seamlessly fit your applications. This product belongs to the category Fittings and armatures and meets the highest quality standards.Quality of OEM replacement partsOur replacement parts are OEM replacement parts that come from the original manufacturer. This means you receive quality and durability that are essential for use in engines. Unlike aftermarket options, our products offer superior functionality.
UNION - 81942970248 suitable for MAN D engines
Premium Quality with Union, Comparison Number 81942970248Discover the OEM replacement part Union, comparison number 81942970248, suitable for MAN D engines. This product offers the highest quality and a perfect fit for your engines in marine and stationary applications. Rely on our long-standing experience and expertise in the field of engine replacement parts.Precision at FocusThe Union, comparison number 81942970248, has been specifically developed to meet the professional demands of engines. All our OEM replacement parts provide you with the assurance that you are using only the best components for your machinery.
T-FITTING - 81942970220 suitable for MAN D engines
T-fitting with comparison number 81942970220Discover our T-fitting (comparison number: 81942970220), an essential OEM replacement part designed specifically for reliable engines. This product ensures optimal functionality and precise fit, making it the ideal choice for your needs.Suitable for MAN D EnginesOur T-fitting is perfectly suitable for MAN D engines. It meets all the requirements for diesel and gas engines in marine as well as stationary applications. Rely on our OEM replacement parts that offer outstanding performance and durability to maximize your engine efficiency.
THREADED UNION - 81920102199 suitable for MAN D engines
Threaded union suitable for MAN D enginesDiscover our premium product, the threaded union with the comparison number 81920102199. This replacement part is specifically designed to provide a perfect fit for MAN D engines. With a weight of just 0.02 kg, our threaded union is an essential component that optimizes the performance of your engines.
THREADED UNION - 81920102144 suitable for MAN D engines
Premium Threaded Union for EnginesIntroducing the threaded union (comparison number 81920102144), an essential OEM replacement part specifically designed for your engines. With its excellent quality, this fittings and armatures item is tailored to meet the demands of marine and stationary applications.Suitable for MAN D EnginesThis threaded union is compatible with MAN D engines and ensures efficient operation. With a weight of only 0.001 kg, installation is quick and straightforward. Rely on our many years of experience; MOPA Motorparts provides only the best OEM replacement parts available on the market.
THREADED UNION - 81920102094 suitable for MAN D engines
Threaded Union for Your EnginesDiscover the threaded union (comparison number: 81920102094), an essential OEM replacement part designed for MAN D engines. This item from the category fittings and armatures is ideal for diesel and gas engines in maritime as well as stationary applications. Weighing only 0.03 kg, this threaded union offers the necessary robustness to ensure reliable function for your machine.
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.