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Marine lines and pipes– reliable for engines 

Marine lines are essential components in engine and auxiliary systems onboard ships and offshore installations. They guide fluids such as fuel, coolant, oil or exhaust gases safely through the system and ensure consistent operation under demanding marine conditions. Whether for main propulsion, auxiliary systems or generator units – high-quality marine lines support performance, safety and compliance.

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LEAK OFF LINE - 51123010012 suitable for MAN D-engines

LEAK OFF LINE - 51123010012 suitable for MAN D-engines

Leak off line suitable for MAN D enginesThe leak off line with the comparison number 51123010012 is a top-quality product specifically designed for use in MAN D engines. This essential OEM replacement part belongs to the category of lines and pipes, which are crucial for the optimal functioning of your engine. Weighing only 0.25 kg, this accessory reliably ensures that everything operates smoothly.Benefits of OEM replacement partsAs an OEM replacement part, the leak off line meets the highest quality standards typical of original equipment manufacturers. By using it, you can be confident that your engine operates efficiently and that the best materials have been utilized. This makes the leak off line an economically advantageous solution for companies seeking products that meet their high demands.

LEAK OFF LINE - 51123010007 suitable for MAN D-engines

LEAK OFF LINE - 51123010007 suitable for MAN D-engines

Leak off line suitable for MAN D enginesDiscover the Leak off line (comparison number: 51123010007), a top-quality OEM replacement part designed optimal for your application scope. This product, characterized by precise production, weighs only 0.16 kg and is tailor-made to meet the requirements of MAN D engines.

LEAK OFF LINE - 51123010005 suitable for MAN D-engines

LEAK OFF LINE - 51123010005 suitable for MAN D-engines

Superior Performance of the Leak off LineDiscover the Leak off line with the comparison number 51123010005 – an OEM replacement part that offers ideal solutions for your compatible MAN D engines. This line belongs to the category Lines and pipes and is essential for use in diesel and gas engines. Weighing just 0.2 kg, this product is not only lightweight but also efficient and reliable.Quality and Functionality in OperationThe comparison number 51123010005 is a sign of optimal performance. This OEM replacement part ensures that your engines remain powerful. Our Leak off line is suitable for MAN D engines and is produced under stringent criteria to support the longevity and efficiency of your machines.

LEAK OFF LINE - 51123010004 suitable for MAN D-engines

LEAK OFF LINE - 51123010004 suitable for MAN D-engines

Reliable Leak Off Line for Engine PerformanceOur leak off line with the comparison number 51123010004 offers a first-class solution for your needs. This OEM spare part is ideally suited to maximize the performance of your engines and ensure optimal functionality in applications.

LEAK OFF LINE - 51123010003 suitable for MAN D-engines

LEAK OFF LINE - 51123010003 suitable for MAN D-engines

New Leak off Line – for Top Engine PerformanceDiscover our leak off line, the product with the reference number 51123010003. This line is an indispensable OEM spare part in the category of lines and pipes for engines. Our leak off line offers perfect functionality and is ideally suited for demanding operating conditions.Suitable for MAN D Engines – Focus on EfficiencyWeighing only 0.17 kg, the leak off line impresses not only with its performance but also with a thoughtful design. This specially developed spare part is compatible with MAN D engines, ensuring effective integration into your existing system. Rely on our products to keep your engines optimally operational.

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FUEL LINE - 51123006215 suitable for MAN D engines

Top-Quality Fuel Line for MAN DDiscover the fuel line (reference number: 51123006215), which is perfect for MAN D engines. This replacement part ensures a reliable fuel supply and outstanding performance. The reference number 51123006215 allows for easy identification and ensures you receive the correct product.Strong Construction: Replacement Parts for EnginesOur replacement part belongs to the category "Lines and pipes" and is essential for various engines. The materials used are combined to withstand the specific stresses of marine and stationary applications optimally. Each replacement part meets stringent requirements.

Sale price: €355.21Regular price:€394.68(10% saved)
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FUEL LINE - 51123006180 suitable for MAN D-engines

FUEL LINE - 51123006180 suitable for MAN D-engines

Quality of the Fuel LineExperience the outstanding performance of the fuel line with the comparison number 51123006180, an essential product for your needs. This OEM replacement part is specifically designed to ensure optimal functionality and is thus suitable for MAN D engines used in stationary and maritime applications.OEM Replacement Parts: Your Choice for Timeless PerformanceWhen it comes to engines, OEM replacement parts are unparalleled. The comparison number 51123006180 offers a precise fit and durability. You can rely on receiving a product that perfectly meets your requirements and supports the performance of MAN D engines.

Sale price: €525.10Regular price:€583.44(10% saved)
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FUEL LINE - 51123006179 suitable for MAN D-engines

FUEL LINE - 51123006179 suitable for MAN D-engines

Fuel line with comparison number 51123006179 Discover our fuel line with the comparison number 51123006179. This OEM replacement part impresses with reliability and durability. It belongs to the article group "Lines and pipes" and is specifically designed to operate safely and efficiently in engines.Suitable for MAN D engines The fuel line is suitable for MAN D engines. This precise fit is crucial for smooth operation, especially in maritime and stationary applications. Rely on the quality of our OEM replacement parts, which have been tailored to meet the requirements of your engines.

Sale price: €525.10Regular price:€583.44(10% saved)
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FUEL LINE - 51123006178 suitable for MAN D-engines

FUEL LINE - 51123006178 suitable for MAN D-engines

Quality Fuel Line – Your SolutionSecure the high-performance fuel line (part number 51123006178) from MOPA Motorparts. This fuel line belongs to the category "lines and pipes" and is specifically designed to enable optimal functionality for engines. The part number 51123006178 ensures an exact fit and the highest standards that you can expect from a spare part.Component Specifically for MAN D EnginesThe fuel line is suitable for MAN D engines and meets the high demands of the industry. Rely on the durability and efficiency that is ensured solely by carefully selected spare parts. Our expertise also extends to valuable brands such as MWM, Volvo, and Deutz.

Sale price: €525.10Regular price:€583.44(10% saved)
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FUEL LINE - 51123006174 suitable for MAN D-engines

FUEL LINE - 51123006174 suitable for MAN D-engines

Flexible and Reliable Product The fuel line with the comparison number 51123006174 is an essential OEM spare part that meets the highest standards. This solution has been specifically designed to optimally supply engines with fuel and ensure maximum efficiency.Suitable for MAN D Engines - Efficient and Powerful This fuel line is suitable for MAN D engines. This way, you benefit from a reliable OEM spare part that is tailored to the specific requirements of the MAN D series. Trust in the expertise that spans over 25 years of experience.

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FUEL LINE - 51123006164 suitable for MAN D-engines

FUEL LINE - 51123006164 suitable for MAN D-engines

Precise Fuel Line with Comparison Number 51123006164Discover our fuel line, comparison number 51123006164, specifically designed to deliver maximum performance for engines. The fuel line is an essential OEM replacement part from the category of lines and pipes, helping you with the long-term maintenance of your machinery.

Sale price: €207.98Regular price:€231.09(10% saved)
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FUEL LINE - 51123006151 suitable for MAN D-engines

FUEL LINE - 51123006151 suitable for MAN D-engines

Reliable Quality in the Engine SectorDiscover the fuel line with the comparison number 51123006151, which is available as an OEM replacement part. This product has been designed to meet the highest demands for engine performance. Our fuel line provides optimal fit and clearly stands out from aftermarket products.Suitable for MAN D EnginesThe fuel line is specifically suitable for MAN D engines and belongs to the category of lines and pipes. These OEM replacement parts ensure the quality that you expect from a manufacturer. If you require high standards, our products are an excellent choice.

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FUEL LINE - 51123006148 suitable for MAN D-engines

FUEL LINE - 51123006148 suitable for MAN D-engines

Efficient Fuel Line for Successful OperationsDiscover our fuel line (comparison number 51123006148), suitable for MAN D engines. This product is indispensable in the category of lines and pipes and ensures reliable fuel supply in stationary applications and marine.OEM Replacement Parts for Optimal PerformanceAt MOPA Motorparts, you will receive exclusively OEM replacement parts that have been specifically developed to meet the highest standards for engines. Rely on our 25 years of experience in the industry.

Sale price: €643.50Regular price:€715.00(10% saved)
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FUEL LINE - 51123006083 suitable for MAN D-engines

FUEL LINE - 51123006083 suitable for MAN D-engines

Quality and Precision: Reference Number 51123006083Discover the fuel line with the reference number 51123006083. This line is suitable for MAN D engines and stands for reliability and efficiency. Our replacement parts provide you with the necessary performance that your engines require.Essential Information for the Product PageThe fuel line ensures a flawless fuel supply in conjunction with your engine. With the reference number 51123006083, we assure a high level of precision. Rely on our replacement parts, specifically developed to be suitable for MAN D engines.

FUEL LINE - 51123006082 suitable for MAN D-engines

FUEL LINE - 51123006082 suitable for MAN D-engines

Optimal Fuel Line Suitable for MAN D Engines Discover the outstanding fuel line with comparison number 51123006082, specifically designed to maximize the performance of engines. These robust items from the category "Lines and pipes" are essential for the smooth operation of your MAN D engines.Reliable Features of the Fuel Line The fuel line ensures a constant fuel supply, which is crucial for the efficiency of your machines. Weighing in at 1.83 kg, this OEM replacement part is easy to install while also possessing the necessary durability to withstand the demands of challenging environments.

FUEL LINE - 51123006076 suitable for MAN D-engines

FUEL LINE - 51123006076 suitable for MAN D-engines

High-Performance Fuel Line for Versatile ApplicationsDiscover our OEM replacement part, the fuel line, with the comparison number 51123006076. This precisely manufactured product offers optimal fit and functionality. It is crucial for the performance of your engines as well as for efficient operation in various industrial applications.Precision Product Suitable for MAN D EnginesOur fuel line fits MAN D engines and has been designed as a reliable OEM replacement part. Technicians and experts can rely on the quality and durability that this product offers. Weighing only 0.332 kg, it allows for easy installation and efficient operation.

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FUEL LINE - 51123006072 suitable for MAN D-engines

FUEL LINE - 51123006072 suitable for MAN D-engines

Fuel line with comparison number 51123006072Discover the fuel line with comparison number 51123006072. This product is specifically suitable for MAN D engines and belongs to the group of lines and pipes. Thanks to its precise manufacturing, this OEM spare part impresses with durability and high efficiency in fuel transfer to your engines.

Sale price: €440.15Regular price:€489.06(10% saved)
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PRESSURE PIPE - 51103116120 suitable for MAN D-engines

PRESSURE PIPE - 51103116120 suitable for MAN D-engines

Suitable Component for MAN D EnginesThe product you are looking for is the pressure pipe with the comparison number 51103116120. This OEM replacement part is specifically designed for applications in marine and stationary technology and plays a crucial role in the functionality of your MAN D engines.Precision with Comparison Number 51103116120As an OEM replacement part, the pressure pipe impresses with excellent fit, which is required for MAN D engines. This ensures optimal performance in the continuous operation of your engines.

Sale price: €2,069.50Regular price:€2,299.44(10% saved)
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PRESSURE PIPE - 51103116119 suitable for MAN D-engines

PRESSURE PIPE - 51103116119 suitable for MAN D-engines

Pressure pipe of the highest quality and durabilityDiscover our pressure pipe (comparison number 51103116119), which offers OEM spare parts and is specifically designed for MAN D engines. This product contributes to the optimal performance of your engine and ensures a secure connection in application.

Sale price: €1,935.65Regular price:€2,150.72(10% saved)
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PRESSURE PIPE - 51103116117 suitable for MAN D-engines

PRESSURE PIPE - 51103116117 suitable for MAN D-engines

Pressure pipe suitable for MAN D enginesDiscover our pressure pipe (comparison number: 51103116117), which has been developed for MAN D engines. This OEM replacement part allows for reliable use and excellent fit, positively influencing the performance of your engines.

Sale price: €1,719.43Regular price:€1,910.48(10% saved)
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PRESSURE PIPE - 51103116110 suitable for MAN D-engines

PRESSURE PIPE - 51103116110 suitable for MAN D-engines

Pressure Pipe for Efficient ApplicationsDiscover our pressure pipe (comparison number: 51103116110) – the perfect OEM replacement part, suitable for MAN D engines. This top-quality product belongs to the product group "Lines and pipes" and ensures your engine performance.Quality for the Highest StandardsThe pressure pipe impresses with excellent quality and is ideally suited for both marine and stationary applications. Our OEM replacement part offers maximum reliability, allowing your engine to operate smoothly.

Sale price: €1,935.65Regular price:€2,150.72(10% saved)
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PRESSURE PIPE - 51103116109 suitable for MAN D-engines

PRESSURE PIPE - 51103116109 suitable for MAN D-engines

Efficient Pressure Pipe: Comparison Number 51103116109Discover our pressure pipe, marked with the comparison number 51103116109. This product is an OEM spare part and offers reliable performance. Each component is carefully crafted to meet the highest standards in the industry.Suitable for MAN D EnginesOur pressure pipe is specifically designed for MAN D engines and allows for easy integration into your system. OEM spare parts stand for quality and durability, so you can be confident that this product will meet your requirements.

Sale price: €1,740.02Regular price:€1,933.36(10% saved)
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PRESSURE PIPE - 51103116095 suitable for MAN D-engines

PRESSURE PIPE - 51103116095 suitable for MAN D-engines

Pressure pipe with comparison number 51103116095Discover our pressure pipe, which is marked with the comparison number 51103116095 and is specifically suitable for MAN D engines. This product belongs to the category lines and pipes and offers the highest quality standard typical of OEM replacement parts. Rely on the quality that can only be found in manufacturer parts.Reliability through OEM replacement partsThe difference between OEM and aftermarket is crucial for the efficiency of your engines. Our pressure pipe as an OEM replacement part ensures a perfect fit and durability for engines that we expect from reputable manufacturers. Aftermarket components often cannot provide the safety and efficiency that your business needs. Choose quality that works.

Sale price: €1,637.06Regular price:€1,818.96(10% saved)
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PRESSURE PIPE - 51103116089 suitable for MAN D-engines

PRESSURE PIPE - 51103116089 suitable for MAN D-engines

Premium Product: Pressure Pipe with Comparison Number 51103116089Our pressure pipe with comparison number 51103116089 is an essential OEM spare part that has been specifically designed. This product stands out for its high quality and reliability.Quality for MAN D EnginesThe pressure pipe is suitable for MAN D engines and is characterized by first-class manufacturing. The use of OEM spare parts is crucial for the optimal performance of your engines. Eliminate uncertainties regarding aftermarket parts to ensure long-term operation.

Sale price: €1,317.89Regular price:€1,464.32(10% saved)
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Function and benefits

Marine lines connect key components such as pumps, filters, heat exchangers and tanks. They transport fluids under pressure or vacuum, depending on the system's function. Well-designed engine lines and motor pipes provide:

  • Secure fluid transport with minimal pressure loss
  • High resistance to vibration, temperature and corrosion
  • Reliable performance in continuous operation

Whether it's marine pipes in the engine room or mechanical pipes in auxiliary systems, every connection must meet strict safety and durability standards.

Types and materials

Marine lines and engine pipes are available in various types and materials. Common variants include rigid steel lines, flexible hoses, double-walled pipes for fuel systems, and high-temperature resistant exhaust lines. Motor lines can be configured to carry fluids like oil, coolant, compressed air or fuel depending on the system.

Mechanical lines are often used in hydraulic or pneumatic subsystems and must be able to withstand pulsing pressure. All pipes and fittings must be resistant to seawater, vibration and thermal cycling – especially in marine pipes and offshore applications.

Installation and maintenance

Installing mechanical pipes requires precise routing, strong mounting brackets, and high-quality seals or flanges. Leaks or misalignment can lead to reduced performance or even system failure. During regular inspections, all marine lines and motor pipes should be checked for corrosion, cracks and secure connections.

We supply a broad range of marine lines, engine pipes and system-specific fittings compatible with MTU, Deutz, MAN, Volvo Penta and MWM engines – with fast availability and OEM-level precision for maritime and industrial use.

Marine lines for industrial and ship engines – suitable for MTU, Deutz, MAN, Volvo Penta and MWM – replacement parts

FAQ

What are marine lines?
Marine lines are pipes and hoses used in ships to transport fluids such as oil, coolant, fuel or exhaust gases. They are designed to withstand harsh marine environments and are essential for engine operation and onboard systems.

What is the difference between engine pipes and mechanical lines?
Engine pipes are typically used in fuel, exhaust and cooling systems of the engine itself. Mechanical lines may include hydraulic or pneumatic pipes used in steering, winch systems or auxiliary machinery. Both must meet high safety and performance standards.

When should marine pipes be replaced?
Marine pipes should be replaced if there are signs of corrosion, wear, vibration damage or leakage. Regular inspections and timely replacement are crucial for preventing failures, especially in high-pressure or high-temperature systems.

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