4 inch Silicone Coupler
Support customization of silicone hose.
Kinglin silicone hose meets or exceeds SAE J20 standards.
Designed for applications requiring high-temperature resistance and high performance.
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4 inch silicone coupler
Kinglin 4-inch silicone couplers meet or exceed SAE J20 standards and are designed for high-performance applications in automotive, racing, truck, marine, and industrial systems. They also provide stable and reliable connections between intake manifolds, turbochargers, intercoolers, and cooling systems.
Our 4-inch silicone couplers are made from high-quality silicone raw materials and four layers of aramid-reinforced silicone. This structure withstands high temperatures and pressures without expanding or bursting, and they are durable, flexible, and long-lasting, even in extreme weather.
- Temperature range -60°C ~ +260°C
- Inner Diameter: 4 inch (102mm)
- Length: Standard 3 inch / 4 inch (custom available)
- Reinforcement: 4-ply polyester / aramid fabric
- Colors: Black / Blue / Red (customization available)

4 inch Silicone Hose Supply in China
Kinglin specializes in silicone hoses, with over 20 years of experience in manufacturing and exporting.
We offer a comprehensive range of standard silicone hose sizes. Not only offer the most common 4-inch silicone coupler,4 Inch Silicone Coupler, 4 inch silicone coupler 90 degree, 3 inch to 4 inch silicone coupler, but also custom-designed lengths, wall thicknesses, angles, and inner diameters to meet your specific requirements. Simply send us your desired sizes and we’ll provide them.
Our silicone couplers come in a variety of standard colors, including blue, red, and black, and we can also customize them to your specifications. We use a professional colorimeter to ensure color consistency, ensuring your equipment or vehicle maintains high performance while maintaining a stylish, beautiful engine.
Featured Silicone Coupler Products
Our products adhere to the strict product quality standards of ISO 9001:2015 and IATF 16949:2016.
If you need other silicone hose sizes, please contact us. We support customization

4 inch 45 degree silicone coupler
Good flexibility, reducing vibration and hose rupture under pressure

4.25 inch silicone coupler
Customizable length, wall thickness, color and OEM logo printing

3 inch 90 degree silicone elbow
Wide range of applications, can be customized according to your different applications

Quality Assurance
Our factory is ISO9001, IATF16949, RoHS, and REACH certified. Our professional quality control team conducts rigorous quality inspections at every production step, ensuring 100% factory inspection.
We guarantee that every 4 inch silicone coupler meets your quality requirements and is dimensional within your desired tolerances.

Our Factory Strength
Our products are available in a wide range of sizes, with more than 10,000 standard silicone hose sizes.
If you want to customize silicone hoses, we have a professional design team that can provide free design drawings, free samples and tests to ensure that the products are 100% consistent with the drawings.
Our factory has rich production experience and advanced production equipment, with a monthly output of more than 500,000 pieces.
Our strong production capacity enables us to process orders quickly. Whether you have a minimum order quantity or a bulk order, we can deliver on time.
Choose to buy from our kinglin silicone hose factory, factory prices and professional services, which can help you save more costs and get more benefits.
Latest Project
Why Choose the Silicone Hoses From Our Factory?

We have a professional technical engineering team that can design products and develop molds based on drawings, samples or dimensions provided by customers. No matter what the requirements are, we can provide one-stop service from design to mass production.

We insist on selecting high-quality raw materials to control product performance and stability from the source. All silicone, fluorosilicone and other raw materials are strictly screened from reliable suppliers and meet international quality and environmental standards such as IATF16949, ISO9001, and RoHS.

We have semi-automatic production lines and skilled workers, with a daily output of more than 400,000 silicone hoses. Standard products are in stock, with faster delivery and support for emergency order processing; factory direct sales provide you with competitive price advantages

The products have passed IATF16949, ISO9001, ROHS and other certification standards, strictly implement the quality management system, support the provision of third-party test reports, and are exported to Europe, America, South America, the Middle East, Southeast Asia and other markets.

At Kinglin, we not only focus on product quality, but also on the experience in cooperation. We have an independent after-sales service team that responds within 24 hours to help you solve problems and avoid affecting your business progress. We provide timely, professional and reliable after-sales service to every customer.

Our silicone hose can be shipped quickly. We have cooperated with professional logistics teams for many years and support multiple modes of shipping, including sea transportation, air transportation, and international express delivery to ensure perfect product delivery and effectively guarantee your delivery date and project progress.
Welcome to Visit Our Factory!
We just moved into the new factory in May this year, welcome to visit our new factory
Kinglin is a professional silicone hose manufacturer in China with more than 20 years of experience. You can trust us.
Frequently Asked Questions
If your question is not listed, please email us now
Our 4-inch silicone coupler can withstand temperatures from -60°C to +260°C, making it ideal for use in turbocharger systems, cooling systems, and high-temperature environments.
Ordinary silicone is not resistant to fuel and oil. If contact with fuel or oil mist is expected, we recommend using fluorosilicone.
It’s 4-ply polyester reinforced. For higher requirements, we offer 5-ply or aramid fiber reinforced versions for higher-temperature or high-pressure applications.
We look forward to assisting you!
Free sample delivery
Get in touch
Boost Your Projects With Silicone Hoses!
In order to provide better silicone hoses and customized services, please contact us!
Email us
service@hbkinglin.com
Phone
15613933397
Location
No. 29, Minjiang West Street, Qinghe County, Xingtai City, Hebei Province, China