Bolt and screw – solutions for marine & industrial
Every engine relies on a secure and vibration-resistant fastening system. A high-quality bolt and screw setup holds together engine blocks, manifolds, and accessories across diesel, gas, and marine systems. In industrial applications, engine screws and motor bolts provide structural stability, resist thermal cycling, and support precision alignment. For marine use, corrosion-resistant marine bolt and marine screws ensure lasting safety even in harsh saltwater environments.
Choose from following:
STUD - 121B01003 suitable for MTU engines
Stud with Comparison Number 121B01003The stud with the comparison number 121B01003 is an essential OEM spare part developed to fit MTU engines. This screw belongs to the category of screws and is vital for the reliable functioning of your engines. Rely on the quality we provide at MOPA Motorparts!Exact Fit for Optimal PerformanceOur stud ensures a perfect fit for your applications. It is an OEM spare part that allows your MTU engines to operate optimally. Trust in the durability and longevity of our products, which are tailored to your needs.
STRESS BOLT - 121A37006 suitable for MTU engines
Stress bolt suitable for MTU enginesDiscover our stress bolt with the reference number 121A37006, which has been specifically designed to support the reliability and safety of your engines. This OEM spare part is essential for engine assembly and provides the necessary clamping force to securely hold all components together. Weighing only 0.37 kg, the stress bolt impresses with its thoughtful design and excellent performance characteristics.
STRESS BOLT - 121A37002 suitable for MTU engines
Precise Stress Bolt 121A37002 for Your EnginesThe stress bolt with the comparison number 121A37002 is an essential OEM replacement part that plays a crucial role in the reliability of your engines. It belongs to the category of screws and weighs 0.306 kg. Thanks to its careful processing, this stress bolt is optimally suited to create a durable connection in demanding applications.Optimal Fit for MTU EnginesThe stress bolt with the comparison number 121A37002 is compatible with engines of series 493 and specifically designed for the engine type 12V493. This precision is crucial to maximizing the efficiency and performance of the engines. Rely on a product that meets the high-quality standards of MTU and offers reliable functionality.
SCREW PLUG - 81111290003 suitable for MAN D engines
Product details of the screw plug suitable for Deutz enginesThe product with the reference number 81111290003 is a screw plug manufactured as an OEM replacement part. This product is suitable for Deutz engines and offers a precise fit required for OEM replacement parts. With compact dimensions of 2.2 x 2.2 x 1.9 cm and a weight of 0.03 kg, the screw plug meets the demands placed on screws in high-performance engines.Screw suitable for Deutz manufacturer – OEM replacement part qualityThis screw plug is an OEM replacement part specifically designed for Deutz engines and impresses with reliable craftsmanship. In the article group Screws, this product ensures optimal functionality and efficiency. Only a suitable OEM replacement part like this supports the long-term use of Deutz engines.
SCREW/BOLT - 0001840173 suitable for MTU engines
Reliable Screw for Your Requirements Discover the screw with the comparison number 0001840173, an essential OEM replacement part for engines used in marine and stationary applications. This screw weighs only 0.035 kg, providing the ideal combination of strength and convenience. Rely on the efficiency that this product delivers in demanding applications.
VENT PLUG - 1453410000 suitable for Bosch engines
Reference number 1453410000 and vent plug suitable for Deutz enginesThe product with the reference number 1453410000 is a vent plug manufactured as an OEM replacement part suitable for Deutz engines. This screw from the article group Screws impresses with its precise dimensions of 2.1 cm length, 2.1 cm width, and 1.1 cm height at a weight of 0.007 kg. It ensures that the ventilation in Deutz engines functions safely and reliably. As an OEM replacement part, this product delivers the required fit and performance appreciated by professional users.Vent plug suitable for Deutz series and their engine typesThe product fits various Deutz series, including the 232, 816, 604 DIESEL, and 616 DIESEL models. Additionally, the vent plug as an OEM replacement part is available for engine types such as D232-V12, SBA12M816, TBD604-BV8, or TBD616-V12. Thanks to this precise alignment with the mentioned Deutz engines, the screw is an important component for ventilation that supports the operation of Deutz engines and improves their reliability.
VENT PLUG - 1413453020 suitable for Bosch engines
Cross Reference Number 1413453020: Discover Product Suitable for Deutz Engines The product with the cross reference number 1413453020 is a vent plug specifically designed for Deutz engines. This OEM spare part ensures efficient ventilation and contributes to the reliable operation of the engines. The precise manufacturing provides an exact fit, which is especially important in demanding applications. As an OEM spare part, the vent plug meets the manufacturer's requirements and enables long-lasting use.Vent Plug Suitable for Deutz Series and Engine Types The product is usable as a vent plug suitable for the Deutz series 232, 816, 604 DIESEL, as well as 616 DIESEL. Furthermore, it is compatible with the engine types D232-V12, SBA12M816, TBD604-BV8, and TBD616-V12. The versatile compatibility ensures easy integration into various engine models and supports their safe operation.
SCREW/BOLT - 114L63028 suitable for MTU engines
Screw suitable for MTU enginesDiscover the screw with the comparison number 114L63028, an essential OEM spare part suitable for MTU engines. This precisely manufactured screw ensures the necessary stability and performance, allowing your engines to operate at their best. Trust the quality that OEM spare parts provide.Comparison number and featuresThe comparison number 114L63028 indicates the compatibility of this screw with MTU engines. The exact workmanship ensures that this product meets the standards of quality and performance that are essential in marine and stationary engine technology.
ADJUSTING SCREW - 114D42702 suitable for MTU engines
OEM Replacement Part: Adjusting Screw with Comparison Number 114D42702Discover our product, the adjusting screw with the comparison number 114D42702, specifically designed to ensure optimal performance. This OEM replacement part is suitable for MTU engines and provides you with the reliability needed for demanding applications in marine and locomotives.Quality that ConvinceThe comparison number 114D42702 stands for the highest precision and fit accuracy. This adjusting screw is an essential component to ensure the functionality of your engines. Trust in the quality that only OEM replacement parts can provide, and choose our product for long-term efficiency.
SCREW/BOLT - 114B19002 suitable for MTU engines
Excellent Product for Your ApplicationsDiscover our product, the screw/bolt with the comparison number 114B19002, which is perfectly suited for MTU engines. This OEM replacement part offers the quality essential for the reliable operation of your engines. Every single aspect of the screw/bolt has been designed to meet the requirements of engines that are compatible with MTU engines.
BIG END BOLT - 114B09004 suitable for MTU engines
Premium Big End Bolt for Reliable EnginesDiscover our high-quality spare part suitable for MTU engines – the Big End Bolt (comparison number: 114B09004). This OEM spare part provides optimal performance and reliability and is designed for the demanding requirements in marine and stationary applications.
STRESS BOLT - 114B02003 suitable for MTU engines
Reliable Product: Stress Bolt 114B02003 Discover the stress bolt, which is listed as an OEM spare part under the comparison number 114B02003. This product is suitable for MTU engines and provides the performance you can expect from professional spare parts.
HEXAGON BOLT - 114A80012 suitable for MTU engines
Precise Hexagon Bolt with Reference Number 114A80012 Discover the Hexagon bolt with the reference number 114A80012 – an excellent product that impresses as an OEM replacement part. This precisely manufactured Hexagon bolt is essential for the reliability of your engines.Quality Components Suitable for MTU Engines Our Hexagon bolt belongs to the group of screws and is perfectly suited for MTU engines. Rely on OEM replacement parts that support optimal fitting and promote the longevity of your engines.
SCREW/BOLT - 114A65002 suitable for MTU engines
Excellent OEM Replacement Part for Your EnginesDiscover our OEM replacement part, the screw/bolt with the comparison number 114A65002. This precisely manufactured screw/bolt is specifically suitable for MTU engines and ensures optimal performance in your applications. Rely on quality that supports durability and secures the functionality of your engines.Reliable Components for Your ApplicationsOur screw/bolt is part of an extensive product group tailored to your specific requirements. With the comparison number 114A65002, we offer you a top-quality OEM replacement part that optimizes the performance of your MTU engines. Trust in our many years of experience in the field of engine replacement parts.
STUD - 114A06003 suitable for MTU engines
Precision Stud for the Highest DemandsThe stud with the reference number 114A06003 is a top-quality OEM replacement part designed for the highest demands in MTU engines. This product ensures an excellent fit and reliable performance to optimally support your engines.
STUD - 114A06001 suitable for MTU engines
Stud compatible with MTU enginesDiscover the stud with the comparison number 114A06001, an essential product specifically designed for engines. This OEM replacement part ensures a reliable connection and is compatible with the renowned MTU engines. Trust in quality and durability!
STUD - 114A05002 suitable for MTU engines
Stud: Reliable Spare Part for EnginesDiscover the stud with the comparison number 114A05002. This stud is an essential OEM spare part specifically designed to meet the demands of marine and stationary applications. It ensures effective operation of your engines.Suitable for MTU EnginesOur stud is suitable for MTU engines and offers optimal integration into your existing system. With the comparison number 114A05002, you can ensure that this OEM spare part meets your expectations and provides the highest quality standards.
HOLLOW SCREW - 112D12002 suitable for MTU engines
Optimal Solution: Hollow Screw 112D12002 The hollow screw with the comparison number 112D12002 is an essential OEM spare part specifically designed for your MTU engines. This product provides the quality and stability you need for the reliable operation of your engines.Suitable for MTU: Quality You Can Count On Spare parts suitable for MTU ensure first-class performance. The hollow screw is an essential component, whose functionality is crucial for the efficiency of your engines. Rely on our experience and our extensive range of over 1 million OEM spare parts.
SCREW/BOLT - 112C64006 suitable for MTU engines
Precise screw/bolt with comparison number 112C64006 Our screw/bolt with the comparison number 112C64006 is a precise OEM spare part, ideally suited to enhance the performance of your engines. This product meets the highest standards and impresses with top-quality features.
SCREW/BOLT - 112B14008 suitable for MTU engines
Reliable Screw/Bolt: Comparison Number 112B14008 Discover the screw/bolt with the comparison number 112B14008, which seamlessly integrates into your engine solutions. This OEM spare part offers performance and durability.Suitable for MTU Engines This screw/bolt is specifically designed for MTU engines. Thanks to our careful selection of OEM spare parts, you can be assured of receiving the right product for your requirements.
BIG END BOLT - 112B10004 suitable for MTU engines
Discover the Big End Bolt – An Important ProductThe Big End Bolt with the comparison number 112B10004 is an essential OEM replacement part specifically designed to reliably support engines. This component plays a crucial role in the functionality and longevity of engines.Quality That Convins – Suitable for MTU EnginesThis OEM replacement part is suitable for MTU engines and is made from high-quality materials. With careful quality control, we ensure that the Big End Bolt provides both reliability and efficiency that your engines need.
BIG END BOLT - 112B10003 suitable for MTU engines
Big end bolt with comparison number 112B10003Discover our product, the big end bolt with the comparison number 112B10003, specifically designed for use in MTU engines. This OEM spare part meets the highest quality standards and ensures reliable performance in demanding environments.Precision for MTU enginesThe big end bolt is an essential component designed for MTU engines. By using this OEM spare part, you ensure that your engines operate optimally. The comparison number 112B10003 stands for excellent fit and durability.
SCREW/BOLT - 112A80008 suitable for MTU engines
Precise Screw/Bolt Suitable for MTU EnginesDiscover our screw/bolt with part number 112A80008, the optimal solution for engines in demanding environments. This product has been carefully developed as an OEM replacement part to provide the highest quality and performance. Technically advanced, the screw/bolt meets all requirements for use in MTU engines.
SCREW/BOLT - 112A80006 suitable for MTU engines
Quality of OEM Spare Parts in the IndustryDiscover the screw/bolt with the comparison number 112A80006, an essential OEM spare part for your engines. This product is specifically designed to be suitable for MTU engines. At MOPA Motorparts, we place the highest value on innovative and reliable spare parts to ensure the efficiency of your machines.
What are bolts and screws used for in engine systems?
A bolt and screw is used to fasten components under mechanical stress. This includes cylinder heads, pumps, intake manifolds, mounts, and brackets. Engine bolt assemblies require high tensile strength and precise thread profiles to prevent loosening under load. In marine settings, bolts marine configurations include additional corrosion protection through zinc coatings, stainless alloys, or composite heads. Whether for permanent fastening or removable joints, motor screws and bolts form the basis of structural integrity in all engine types.
Function and benefits of bolts and screws in engines
- Secure static and dynamic connections across engine assemblies
- Resist vibration, pressure, and thermal expansion
- Support torque retention and load distribution
- Enable safe disassembly for maintenance and inspection
- Allow modular engine construction with standard sizes
In both land-based and marine power units, engine screws and motor bolt types are selected for load class, material strength, and thread pitch. Using the right bolt and screw combination reduces failure risks and simplifies service procedures.
Types and materials of marine and engine fasteners
- Hex head and flange bolts for structural engine joints
- Socket head motor screws for precision components
- Thread-locking marine screws for hull or motor mounts
- High-strength engine bolt sets with graded coatings
- Marine bolt systems with stainless steel or brass
Bolts marine assemblies often use A4 stainless or Duplex steel, ensuring protection against seawater and galvanic reactions. Motor screws in enclosed spaces may use black oxide or phosphate finishes for corrosion protection and ease of removal. Material selection depends on torque level, accessibility, and contact with fluids or chemicals.
Compatibility and sourcing
We offer fastening solutions suitable for MTU, Deutz, MAN, Volvo Penta, and MWM. Whether you're rebuilding a turbo mount, re-securing an exhaust manifold, or replacing critical head bolts, our bolt and screw range fits a wide variety of marine and industrial engines. We stock bolts by dimension, thread, material, and application group.
Thanks to our well-equipped warehouse and fast delivery options, we offer short lead times and quick availability for both standard and application-specific fasteners.
Use cases in industrial and marine applications
Marine screws are often used for water-cooled exhaust, hull penetrations, and engine bed mounting. Motor bolt sets are required for rotating assemblies and timing covers. Across applications, the right engine bolt and screw setup ensures alignment under thermal expansion and torque loading. For boats, hose adapter brackets, alternators, and gearboxes also require vibration-resistant marine bolt systems with low galling and secure locking.
Buying advantages with us
Our B2B shop provides:
- Fast worldwide shipping via DHL Express
- Material and strength class selection support
- Easy ordering for bulk or precision fasteners
We supply OEM-standard bolt and screw combinations for maintenance, repairs, or assembly upgrades. With practical kit options and single part selection, technicians can easily match specs during overhauls or engine conversions.
Related components to bolt and screw systems
Complementary items often include washers, retaining rings, thread-locking pastes, brackets, and custom spacers. These elements contribute to torque stability and fastener longevity in both mobile and stationary engines. A correct bolt and screw setup is fundamental to safe operation.
Frequently asked questions about bolts and screws
What is a screw?
A screw is a threaded fastener designed to be inserted into material or a pre-threaded hole to hold components together.
What is the difference between a bolt and a screw?
A bolt typically works with a nut and is used through unthreaded holes, while a screw forms its own thread or fits into a tapped hole.