Cummins cylinder head 3683986

1、High strength and durability: The cylinder head casting material contains 5% more nickel, making it more resistant to cracking. In addition, the internal ribs are reinforced, which increases the rigidity and service life of the cylinder head, and allows it to better withstand high temperatures and pressures.

2、Good cooling: The coolant passages are increased by 30%, which improves the cooling of the cylinder head, prevents the engine from overheating and allows it to run stably under high loads.

3、Upgraded Inlet and Outlet Valves: The outlet valves have been upgraded to inconel valves, increasing their ability to withstand high temperatures and pressures, and preventing standard valves from rattling when running at higher power.

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Product Details

Product Presentation

CIMMINS 3683986 cylinder construction

The Cummins 3683986 cylinder head is made of high -quality aluminum alloy, which provides high strength and lightness. It has a compact and reliable design, which allows you to effectively perform all its functions.

1. The gas distribution mechanism

In the head of the Cummins 3683986 cylinder is a gas distribution mechanism, which controls the supply of fuel and the withdrawal of exhaust gases. This mechanism consists of gas distribution shafts, entry and output valves, valves and other parts. The gas distribution shafts are driven from the piston mechanism using a chain or belt. Valves of inlet and release open and close in a certain sequence, providing the correct engine of the engine.

2. Frequency chambers

In the head of the Cummins 3683986 cylinder, combustion chambers are located, in which fuel combustion occurs. Combustion chambers have a special shape, which allows you to effectively mix air fuel and provide a full combustion. In the combustion chambers, nozzles are also installed that supply fuel to the chamber.

3. Channel of the cooling system

The Cummins 3683986 cylinder head has cooling system channels, which provide cooling the head and other engine components. The channels of the cooling system are filled with coolant, which circulates the system and removes heat from the engine components. In the cylinder head, temperature sensors are also installed, which control the temperature of the coolant.

4. Places for nozzles or spark plugs

In the head of the Cummins 3683986 cylinder there are places for nozzles or spark plugs. The nozzles serve fuel in combustion chambers, and the spark plugs light a mixture of fuel and air. Places for nozzles or spark plugs have a special design, which allows you to securely fix these components and ensure their proper operation.

5. Valves of absorption and release

In the head of the Cummins 3683986 cylinder, valves of the inlets and release are installed, which control the supply of fuel and the withdrawal of the exhaust gases. Valves of intake and release have a special shape and design, which allows you to effectively perform their functions. Valves of inlet and release are driven from gas distribution shafts using springs and other parts.

6. Channels of the lubricant system

The cylinder head Cummins 3683986 has channels of the lubricant system, which provide lubrication of gas distribution shafts, entrance and release valves and other parts. The channels of the lubricant are filled with grease, which circulates the system and lubricates the engine components. Filters of lubrication are also installed in the cylinder head, which cleanse the grease of impurities.


Advantages of the cylinder head Cummins 3683986

The cylinder head Cummins 3683986 has a number of advantages that make it one of the best in the market.

7. High strength and durability

The cylinder head Cummins 3683986 is made of high -quality aluminum alloy, which provides high strength and durability. It can withstand high temperatures and pressure, which makes it ideal for use in diesel engines.

8. Effective cooling

The Cummins 3683986 cylinder head has cooling system channels, which provide effective cooling of the head and other engine components. This allows the engine to work stably at high loads and temperatures.

9. High efficiency of fuel combustion

The Cummins 3683986 cylinder head has a special shape combustion chambers, which provide effective mixing of air fuel and full combustion. This allows the engine to work with high efficiency and low levels of harmful substances.

10. Easy and compactness

The cylinder head Cummins 3683986 has a compact and light design, which allows it to be easily mounted and dismantled. It also allows you to reduce engine weight and increase its effectiveness.

11. Reliability and reliability

The cylinder head Cummins 3683986 has a reliable design and high quality manufacturing, which makes it very reliable and durable. It can work without failures for a long time, which ensures uninterrupted operation of the engine.

The scope of the cylinder head Cummins 3683986

The cylinder head Cummins 3683986 is designed for use of various models in Cummins diesel engines. It can be used in cars, buses, trucks, excavators, construction and agricultural equipment, as well as in other technical devices using diesel engines.


Regular list of spare parts for the CCEC Cummins engine

3008470-20 CCEC Parts
3008530-20 CCEC Parts
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Exhibition Cabinets

Exhibition Cabinets


Getting to know the factory

The factory employs a team of highly qualified and experienced engineers who continuously implement technological innovations and improve products.Currently, the company owns several independent intellectual property rights and patented technologies.The construction equipment we produce includes a wide range of equipment such as excavators, loaders, cranes, bulldozers, and other machines.The products are distinguished by high performance, reliability, energy efficiency, and environmental friendliness, as well as the ability to adapt to complex operating conditions in various climate and working environments around the world.

Getting to know the factory


Rewards and qualificationsforgery

Rewards and qualifications

frequently asked questions


1.Which countries do we export to?


Asia: Vietnam, India, Indonesia, Pakistan, Kazakhstan, Uzbekistan, etc.

Europe: Russia, Belarus, Ukraine, Lithuania, Saudi Arabia, etc.


South America: Brazil, Chile, Paraguay, Argentina, etc.


Africa: South Africa, Ethiopia, Libya, and others.


2.What payment terms can we accept?


Usually we can work with T/T, 30% TT before production and 70% TT before shipment.


3.What logistics methods can we use for delivery?


1) For most countries in Europe, South America, and Africa, etc.we can go by container or Roro via ocean freight.


2) For neighboring countries of China, such as Russia, Vietnam, Kazakhstan, Uzbekistan, etc.we can deliver by car or rail.


3) For light spare parts in urgent demand, we can send it using international courier services such as DHL, TNT, EMS or other air shipments.


4.How can you guarantee that you have delivered the goods to the customers?


A: We will provide you with complete shipping information for your confirmation.


5.What are our advantages compared to other manufacturers/factories?


1) Reliable Quality: We carefully select permanent manufacturers to support spare parts such as engines, axles, transmissions, and many parts designed and produced by us, always adapting with the best materials.


2)Competitive price: Concentration of mechanized production in large quantities reduces production costs to ensure a competitive price.

3) Customer Service Team: Firstly, our sales managers work 24 hours a day and are ready to answer your questions at any time.Secondly, a professional technical service team with senior technicians ready to provide support services to users and dealers.Most issues can be resolved within 24 hours.


4) Fast delivery: Generally, we can deliver within 10 business days at the factory after receiving prepayment from customers.



6.How can you provide after-sales service to customers?


A: We will respond to you promptly and help you resolve any issues within 24 hours.If we really need your local one, we

We will send your professional person to your locality to help you solve problems without any hesitation, providing you with comprehensive service.





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