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Engine washer – sealing and load distribution for engines

An engine washer is a small yet critical component used in engine assembly to distribute pressure, prevent loosening, and ensure tight seals between fastened surfaces. Whether used under bolts, nuts or screws, the right engine washer supports structural integrity and protects sensitive engine parts. In both marine and industrial engines, high-quality engine washers are essential for reliability and long-term performance.

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WASHER 10,3X20X3,50-9SMNPB28 - 51907102018 suitable for MAN D-engines

WASHER 10,3X20X3,50-9SMNPB28 - 51907102018 suitable for MAN D-engines

Reliable Washer 10,3x20x3,50-9smnpb28 in DetailThe Washer 10,3x20x3,50-9smnpb28, an excellent product from MOPA Motorparts, is essential for the smooth operation of your machines. This spare part is listed under the comparison number 51907102018 and provides a precise fit for suitable for MAN D engines. Rely on the outstanding quality of our spare parts, which are specifically designed to maximize the performance of your engines.Quality and Performance in FocusWeighing only 0.007 kg, this spare part demonstrates its high flexibility and robustness. The Washer 10,3x20x3,50-9smnpb28 ensures that all gear functions operate optimally. It is suitable for various applications that require precise adjustment and durability, which is especially essential in the industrial sector.

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 - 51907100642 suitable for MAN D-engines

- 51907100642 suitable for MAN D-engines

Premium Replacement for Your NeedsDiscover the product, the disc 15.1x25x3.5, under the reference number 51907100642. This replacement part offers the precision you need to keep your engines performing optimally.Suitable for MAN D EnginesThe disc 15.1x25x3.5 is specifically designed for MAN D engines and provides an ideal fit and durability due to its careful manufacturing. Rely on top-notch quality with our replacement parts!

Sale price: €7.99Regular price:€8.88(10% saved)
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 - 51907100641 suitable for MAN D-engines

- 51907100641 suitable for MAN D-engines

Excellent Quality: Nut 9/36/3 at a GlanceExperience the outstanding quality of the product with the comparison number 51907100641. This nut 9/36/3 is a top-notch OEM replacement part that can be reliably used in engines compatible with MAN D. The precise fit complements your machines ideally, allowing them to continue delivering excellent performance at work.

Sale price: €7.48Regular price:€8.31(10% saved)
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 - 51907100640 suitable for MAN D-engines

- 51907100640 suitable for MAN D-engines

Gasket: Disk 9/19/3 Discover the disk 9/19/3, an important product in the group of gaskets. Our comparison number 51907100640 ensures a perfect fit and reliability. This OEM spare part is ideal for your applications in the marine and stationary sectors.Durability and Quality for MAN D Engines This disk is suitable for MAN D engines and meets high-quality standards. Rely on our OEM spare parts, which offer excellent durability and dependability. Opt for straightforward spare parts in original equipment manufacturer quality at competitive prices.

Sale price: €4.57Regular price:€5.08(10% saved)
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 - 51907100639 suitable for MAN D-engines

- 51907100639 suitable for MAN D-engines

Disc DMR 8.4/20/4 for MAN D Engines Discover our disc DMR 8.4/20/4, suitable for MAN D engines. With the comparison number 51907100639, this product is ideally designed for use in demanding marine and stationary applications.OEM Replacement Parts for Engines Our replacement parts are OEM replacement parts that offer optimal quality and fit. The comparison number 51907100639 ensures accuracy when selecting this product, which is specifically tailored to the requirements of engines.

Sale price: €2.09Regular price:€2.33(10% saved)
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 - 51907100637 suitable for MAN D-engines

- 51907100637 suitable for MAN D-engines

Precise Connecting Elements: DMR 9/18/2Discover the disc DMR 9/18/2, a replacement part that precisely meets your needs. With the comparison number 51907100637, this product offers outstanding precision and durability in your engine operation. By using top-quality materials, we ensure reliability and efficiency.Suitable for MAN D EnginesThis product is perfectly suited for applications in diesel and gas engines, particularly compatible with MAN D engines. Rely on our replacement parts that have been specifically designed for versatile use. Utilize the disc component compatible with MAN D to optimize your engine's performance.

Sale price: €3.42Regular price:€3.80(10% saved)
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PLAIN WASHER - 51907100636 suitable for MAN D-engines

PLAIN WASHER - 51907100636 suitable for MAN D-engines

Excellent Quality of the Plain Washer Discover the plain washer with the part number 51907100636, suitable for MAN D engines. This product belongs to the category of washers and offers you the precision and performance you need in engine applications.

Sale price: €0.73Regular price:€0.81(10% saved)
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 - 51907100632 suitable for MAN D-engines

- 51907100632 suitable for MAN D-engines

Product Description: Disc 11/26/3.2 – Robust and ReliableDiscover the disc 11/26/3.2, a versatile product with the comparison number 51907100632. This OEM spare part is specifically designed and offers excellent performance for your engines.Optimal Fit for MAN D EnginesThe spare part is suitable for MAN D engines and impresses with its exact fit and durability. With the comparison number 51907100632, you can expect the best functionality in operation.

Sale price: €1.63Regular price:€1.81(10% saved)
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PLAIN WASHER - 51907100629 suitable for MAN D-engines

PLAIN WASHER - 51907100629 suitable for MAN D-engines

Premium Plain Washer for Your Engine ApplicationsDiscover our Plain washer with the comparison number 51907100629, an OEM spare part, specifically designed for applications in the industry. This Plain washer is an essential component that provides optimal performance and durability in conjunction with diesel and gas engines.

Sale price: €2.74Regular price:€3.04(10% saved)
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PLAIN WASHER - 51907100628 suitable for MAN D-engines

PLAIN WASHER - 51907100628 suitable for MAN D-engines

Reliable Plain Washer Suitable for MAN D EnginesDiscover the plain washer with the comparison number 51907100628, an essential OEM spare part specifically designed for use in numerous MAN D engines. This plain washer enhances the efficiency and stability of your engines, allowing you to rely on dependable performance.OEM Spare Parts of the Highest QualityWith this plain washer, which is suitable for MAN D engines, you benefit from OEM spare parts that meet original equipment manufacturer quality standards. The comparison number 51907100628 verifies compatibility, so you can be confident you have chosen the right product.

Sale price: €0.98Regular price:€1.09(10% saved)
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 - 51907100627 suitable for MAN D-engines

- 51907100627 suitable for MAN D-engines

Premium OEM Spare Part: Washer 6.4x14x1.6Discover the Washer 6.4x14x1.6 with the part number 51907100627 – a premium OEM spare part suitable for MAN D engines. This product is designed for engines with the highest precision and optimizes their performance.Enthusiastic Confidence in MAN D EnginesThe Washer 6.4x14x1.6 belongs to the category of gauges and sensors. It is suitable and compatible with all MAN D engines, making installation easier and ensuring higher efficiency. Trust in the quality of our OEM spare parts!

Sale price: €2.74Regular price:€3.04(10% saved)
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 - 51907100625 suitable for MAN D-engines

- 51907100625 suitable for MAN D-engines

Reliable Disc 12.5/24/5 for Your EnginesOur disc 12.5/24/5 is the ideal OEM replacement part for your engines. With the reference number 51907100625, this replacement part is particularly suitable for MAN D engines. Thanks to careful processing, excellent performance and durability in demanding applications are ensured.

Sale price: €2.05Regular price:€2.28(10% saved)
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PLAIN WASHER - 51907100623 suitable for MAN D engines

PLAIN WASHER - 51907100623 suitable for MAN D engines

Reliable OEM Spare Part: Plain Washer 51907100623Discover our plain washer, listed under the comparative number 51907100623. This professional product is suitable for MAN D engines and is ideal for use in marine and stationary engine technology. Thanks to the excellent quality of this plain washer, your engine will always operate smoothly.Compact Dimensions for Flexible ApplicationsWith a weight of only 0.01 kg and a size of 2.4 cm in length and width, as well as a height of 0.4 cm, the plain washer is perfect for tight installation conditions. It has been designed to fit MAN D engines and meets all requirements for reliable performance.

Sale price: €6.91Regular price:€7.68(10% saved)
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 - 51907100622 suitable for MAN D-engines

- 51907100622 suitable for MAN D-engines

Excellent OEM Spare Part for Reliable EnginesDiscover the disc dmr 11/24/1.8 (comparison number 51907100622), a top-quality OEM spare part categorized under "Gears and toothed wheels." Our products are designed to fit perfectly with engines used in areas such as marine applications.Suitable for MAN D EnginesThe OEM spare part is suitable for MAN D engines and ensures a perfect fit. With the comparison number 51907100622, we provide you with the highest quality that is essential for the reliable operation of your engines. Compared to aftermarket solutions, our product ensures durability and the performance you expect.

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 - 51907100620 suitable for MAN D-engines

- 51907100620 suitable for MAN D-engines

Robust Disc with Comparison Number 51907100620Discover our disc 11x22x5-11smnpb30+c-man183-3 with the comparison number 51907100620. This OEM spare part is an essential product specifically designed to optimize engine efficiency. This disc offers outstanding durability and reliability.

Sale price: €3.00Regular price:€3.33(10% saved)
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WASHER - 51907100619 suitable for MAN D engines

WASHER - 51907100619 suitable for MAN D engines

Essential Washer – Comparison Number 51907100619The washer with the comparison number 51907100619 is an essential OEM spare part required for maintenance and operation in demanding applications. It ensures reliable fastening and ensures that the mechanical components within engine operation work optimally together. Due to its robust construction, this product is ideal for anyone who values high quality and wants to operate their MAN D engines efficiently.Suitable for MAN D Engines of the D2842 SeriesWeighing only 0.006 kg and with compact dimensions of 3 cm x 3 cm x 0.2 cm, the washer is suitable for MAN D engines, particularly the engine type D2842LE301. Its precise fit facilitates installation and contributes to the longevity of your engines. Rely on effective maintenance and servicing supported by OEM spare parts to avoid long downtimes.

Sale price: €6.24Regular price:€6.93(10% saved)
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 - 51907100618 suitable for MAN D-engines

- 51907100618 suitable for MAN D-engines

Washer 6.4x14x1.6 – Your Reliable ProductDiscover our product, the washer 6.4x14x1.6, specially designed as a reliable spare part for MAN D engines. This washer contributes to the optimal function of your valve train and features the comparison number 51907100618, which stands for its exact compatibility.Quality Through Internal ControlOur item is manufactured as an OEM spare part and is subject to stringent internal controls. These conditions provide you with the assurance that the product suitable for MAN D engines meets the necessary requirements for reliability and performance.

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PLAIN WASHER - 51907100615 suitable for MAN D engines

PLAIN WASHER - 51907100615 suitable for MAN D engines

PLAIN WASHER with the comparison number 51907100615 suitable for MAN D engines

Sale price: €8.07Regular price:€8.97(10% saved)
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 - 51907100614 suitable for MAN D-engines

- 51907100614 suitable for MAN D-engines

Ready to Use: Disc 11/21/3 as an OEM Replacement PartThe OEM replacement part "Disc 11/21/3" with the comparison number 51907100614 is the ideal product for efficient use in various applications. This product impresses with its quality and durability in use with diesel and gas engines in marine and stationary areas.Suitable for MAN D EnginesThis product is suitable for MAN D engines and thus facilitates excellent operation of your machines. TÜV-certified and compliant with specifications, OEM replacement parts allow you to enhance your efficiency.

Sale price: €1.88Regular price:€2.09(10% saved)
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 - 51907100606 suitable for MAN D-engines

- 51907100606 suitable for MAN D-engines

Efficient Solution with Disc dmr 13/26/4.5 Discover the Disc dmr 13/26/4.5, a damping element that features the comparison number 51907100606. This spare part offers you the quality essential for the smooth operation of engines. Benefit from our wide selection and rely on spare parts that support your drive systems.Products Suitable for MAN D Engines The Disc dmr 13/26/4.5 is specifically designed to be suitable for MAN D engines. We have placed the highest value on precision and necessary performance efficiency. These spare parts are optimized to meet the most demanding conditions, both in the maritime sector and in stationary applications.

Sale price: €7.38Regular price:€8.20(10% saved)
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 - 51907100594 suitable for MAN D-engines

- 51907100594 suitable for MAN D-engines

Exact Fit Disk for MAN D Engines Discover our product, the disk 12.5x30x7, with the comparison number 51907100594. This OEM replacement part offers an ideal fit and maximum durability for your engines. The disk is designed to optimize the performance of diesel and gas engines.Advantages of OEM Replacement Parts Why should you choose our replacement part? OEM replacement parts, such as the disk suitable for MAN D, provide significant advantages over aftermarket products. They ensure reliable quality and perfect fit, significantly enhancing the functionality of your engines.

Sale price: €9.01Regular price:€10.01(10% saved)
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 - 51907100558 suitable for MAN D-engines

- 51907100558 suitable for MAN D-engines

A Quality Product for Your Engine Our Disc 12/26/4.8 is an essential spare part with the comparison number 51907100558 and optimizes the performance of your applications. This product is specially designed and indispensable for the operation of water turbines and generators.Comparison Number 51907100558: Made for MAN D Engines The product, suitable for MAN D engines, provides a precise solution for all applications of diesel and gas engines. As a compatible spare part, it ensures that the necessary adjustments are made to secure smooth operation of your system.

Sale price: €14.91Regular price:€16.56(10% saved)
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 - 51907100555 suitable for MAN D-engines

- 51907100555 suitable for MAN D-engines

Disk suitable for MAN D enginesDiscover our disk 22.5x32x2.2, an essential other spare part, specifically designed for MAN D engines. With the comparison number 51907100555, you secure a product that stands out for its superior quality and durability. Rely on the first choice and avoid aftermarket alternatives that often do not meet the required standards.

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 - 51907100554 suitable for MAN D-engines

- 51907100554 suitable for MAN D-engines

Special Product: Washer 13/60/3Our washer 13/60/3 is an essential part that offers optimal performance and durability. This precisely manufactured washer belongs to the category of screws and impresses particularly with its high quality.

Sale price: €17.63Regular price:€19.59(10% saved)
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Function and advantages

Engine washers serve several key functions in engine construction and repair. They are used to:

  • Distribute clamping force evenly across surfaces
  • Protect soft materials or coatings from fastener damage
  • Improve sealing and prevent loosening due to vibration

In dynamic applications, engine washers also help compensate for thermal expansion, surface irregularities and pressure shifts within the engine block or housing.

Types and applications

Engine washers are used across all major engine components – from cylinder heads and manifolds to oil pans, pumps and brackets. Common types include:

  • Flat washers for load distribution
  • Spring washers for vibration resistance
  • Sealing washers (e.g. copper or rubberized) for fluid-tight joints

Each engine washer must be matched to the specific fastener size, torque requirement and environmental condition. In marine and high-vibration engines, corrosion-resistant and locking washer types are preferred.

Materials and availability

Engine washers are typically made from hardened steel, stainless steel, brass, aluminum or copper – depending on application and environment. Coated variants help prevent corrosion and galling. We offer a wide range of engine washers for MTU, MAN, Volvo Penta, Deutz and MWM engines – in OEM-compatible quality and with fast availability.

Engine washer for industrial and marine engines – suitable for MTU, Deutz, MAN, Volvo Penta and MWM – replacement parts

FAQ

What is an engine washer used for?
An engine washer is placed under a nut, bolt or screw to distribute pressure, improve grip and prevent damage to surrounding surfaces. It also helps maintain torque and sealing under heat, pressure and vibration.

Are all engine washers the same?
No. Engine washers vary in size, thickness, material and function. Some are designed for sealing, others for locking or vibration damping. Using the correct washer type is critical for safety and performance.

When should engine washers be replaced?
Engine washers should be replaced during engine overhauls, when fasteners are removed, or when there are signs of wear, corrosion or deformation. Reusing worn washers can lead to leaks or torque loss.

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