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A Guide To Marine Engine Cylinder Head Manufacturers

Explore a comprehensive guide to top marine engine cylinder head manufacturers, ensuring reliability and durability for optimal engine performance on the seas.

When it comes to choosing a marine cylinder head, also known as a cylinder cover, there are numerous factors to consider. One of the most crucial aspects is selecting the right manufacturer for your ship from the wide range available. As a reputable marine parts supplier, Gosea Marine is here today to provide guidance in finding a suitable marine engine cylinder head manufacturers.

The Major Marine Engine Cylinder Head Manufacturers


Wärtsilä is a renowned global company that specializes in providing advanced solutions for the marine and energy sectors. In the marine industry, Wärtsilä offers a comprehensive range of products and services. This includes marine engines, propulsion systems, auxiliary systems, and environmental solutions. 

Within Wärtsilä’s marine product portfolio, the Wärtsilä cylinder head holds a crucial role. Wärtsilä cylinder heads are renowned for their exceptional quality, durability, and performance. They are designed to withstand the demanding conditions of marine operations and deliver optimal power and efficiency.


Sulzer, now known as MAN Energy Solutions, is a prominent company specializing in engineering and manufacturing solutions for various industries, including the marine sector. 

In the marine industry, Sulzer was renowned for its large two-stroke engines, which were widely used in different types of vessels. The Sulzer cylinder head are very important in these engines, ensuring efficient combustion and optimal performance. These cylinder covers were designed with advanced engineering and innovative features to meet the demanding requirements of marine applications.


In the marine sector, Mitsubishi offers a comprehensive range of products and services. They specialize in the construction of various types of vessels, such as cargo ships, tankers, cruise ships, and offshore structures.

Additionally, Mitsubishi manufactures marine engines and propulsion systems that are renowned for their reliability, performance, and fuel efficiency.As a result, Mitsubishi engine cylinder heads demonstrate exceptional performance in the marine sector.

Man B&W Engine cylinder head for marine operation

Man b&w

MAN B&W (Burmeister & Wain) is a renowned brand in the maritime industry, specializing in the production of large two-stroke diesel engines.

Man b&w cylinder head is engineered to deliver efficient power generation with reduced emissions. Their design and construction contribute to the overall reliability and longevity of MAN B&W engines.


Yanmar offer a diverse range of engines that power various types of vessels, including sailboats, powerboats, fishing boats, and small commercial vessels. 

Yanmar cylinder headsare integral components of their marine engines, with their expertise in engine technology, Yanmar ensures that their cylinder heads are perfectly matched to their engines, allowing for seamless integration and optimal performance. 


Daihatsu offer a diverse range of engines that power a wide array of marine applications, including fishing boats, workboats, passenger vessels, and offshore support vessels. Daihatsu engines are designed to deliver optimal power output, ensuring smooth operation and reliable performance on the water.

Daihatsu cylinder head are engineered to provide efficient sealing of the combustion chamber, optimizing power output and fuel efficiency.

Daihatsu engine cylinder head for marine operation


GDF (Guangzhou Diesel Engine Factory) excels in manufacturing medium-speed large power diesel engines, gas engines, and generating sets. 

One of GDF’s flagship products is the engine cylinder cover, specifically designed for marine applications. The GDF engine cylinder head exemplifies meticulous engineering and adherence to rigorous quality standards.

Marine Cylinder Head Manufacturer's Main Products

Wärtsilä cylinder head 6L20

Wärtsilä cylinder head 6L20 is constructed using durable grey cast iron. It incorporates several advanced features to optimize performance and reliability:

  • Efficient Cooling: The thermally loaded flame plate is effectively cooled by circulating cooling water. This water is directed from the periphery to the center of the head, ensuring efficient heat dissipation.

  • Valve Rotators: Each valve is equipped with valve rotators, which enhance valve movement and minimize wear, contributing to extended valve lifespan.

Sulzer Cylinder Head RTA84T

Sulzer RTA84T low-speed marine diesel engines are specifically designed to provide efficient propulsion for extremely large crude oil tankers (VLCCs and ULCCs). There are several features of Sulzer cylinder head RTA48T:

  • Secure Fastening: The cylinder cover is secured by eight elastic studs, providing a reliable and secure attachment to the engine block.

  • Anti-Corrosion Cladding: To protect the cylinder covers from hot corrosive or erosive attack, anti-corrosion cladding is applied downstream of the injection nozzles. This safeguards the cylinder covers and helps maintain their integrity over time.

Two Series Of Mitsubishi Cylinder Head

Mitsubishi offers two distinct series of Mitsubishi cylinder covers, each tailored for specific engine applications:

  • UEC (Unified Engine Control):The UEC series  Mitsubishi cylinder heads designed for durability and efficient performance. These cylinder covers are specifically engineered for Mitsubishi’s large, low-speed marine engines used in cargo vessels and tankers.
  • UET (Unified Engine Technology):The UET series of cylinder covers is optimized to enhance combustion efficiency, power output, and emissions control. These covers are designed for Mitsubishi’s medium-speed engines used in various applications such as tugboats, workboats, and power generation. 

Other type of marine cylinder head like Yanmar cylinder head, Man b&w cylinder head, Daihatsu cylinder head and GDF cylinder head, you can contact us for the specific information.

Who Is The Best Cylinder Head Manufacturer?

Choosing a single “best” marine engine cylinder head manufacturers is subjective and depends on various factors such as specific engine requirements, performance needs, and individual preferences. However, based on reputation, industry expertise, and a track record of producing high-quality marine cylinder covers, Wärtsilä can be considered one of the top manufacturers in this field.

Wärtsilä’s continuous investment in research and development has allowed them to stay at the forefront of technological advancements in Wärtsilä  cylinder head design. By integrating cutting-edge technologies and optimizing performance characteristics, they have been able to offer cylinder heads that maximize engine efficiency, fuel economy, and power output. This added value appeals to customers seeking high-performance solutions for their marine propulsion systems.

Find Marine Engine Cylinder Head At Gosea Marine

With our strong partnerships with renowned marine cylinder cover manufacturers like Wärtsilä, Sulzer, MAN B&W, Mitsubishi, Daihatsu, Yanmar, and GDF, Gosea Marine confidently provides a comprehensive one-stop service. We trust the exceptional quality of these manufacturers’ products and assure our customers of our ability to deliver top-notch service and support for all their marine cylinder head requirements.


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