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HPS Performance Products HPS 4-1/8" (105mm) 4-Ply Reinforced Black Silicone Straight Coupler Hose
$24.87

Looking for a solid silicone coupler that won’t let you down? Check out this HPS 4-1/8" (105mm) straight coupler hose. It’s built tough, with a 4-ply reinforced design that can handle some serious heat—up to 350°F (177°C) to be exact. So, whether you’re pushing your engine to the limit or just need something reliable for your custom setup, this hose has got you covered.

This isn’t just any coupler. It meets and exceeds SAEJ20 standards, which means it’s made for heavy-duty pressure connections. If you're into marine work, industrial applications, or fabricating your own turbo or intercooler piping, this is a great pick. And if you’re a DIY enthusiast looking to upgrade your intake or radiator cooling system, you’ll appreciate the durability and flexibility this hose offers.

Now, let’s talk specs. The inside diameter is 4.12" (or 105mm), while the outside diameter comes in at 4.53" (115mm). It’s 3 inches long with a wall thickness of about 4.5mm. Plus, it’s UV and ozone resistant, so it can take a beating from the elements. Just keep in mind, this silicone hose isn’t compatible with fuel or oil, so plan accordingly!

  • Made from high-temperature 4-ply reinforced silicone
  • Perfect for heavy-duty pressure connections
  • Great for marine, industrial, and custom applications
  • UV and ozone resistant for outdoor durability
  • Not suitable for fuel or oil use

If you’re serious about your project and need a hose that can keep up, this HPS coupler is a no-brainer. It’s built for performance and reliability, so you can focus on what really matters—getting the job done right.

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About HPS Performance Products

HPS Performance Products is a leading manufacturer of aftermarket performance parts, fabrication components, and silicone hoses. HPS serves a number of different industries, including automotive, aerospace, construction, commercial truck/bus, marine, agricultural, turbo diesel, off-road, performance racing, general manufacturing, and water treatment. The company’s ability to fabricate custom-shaped multiply silicone hoses make it ideal for a wide range of applications. The multiply carcass makes HPS’ hose perfect for coolant and turbocharged pressure applications while the fluoro-silicone-lined hoses make it safe to be used with petroleum-based oil and fuel.

HPS Performance Products is committed to meeting its original goals of producing quality parts at competitive pricing and providing customer service responses in a personal, timely manner. All HPS products have been thoroughly tested on the dyno and track, and meet or exceed SAEJ20 standards. The HPS staff has solid expertise in the silicone hose department, which allows them to deliver standard size silicone hoses with same-day shipping. HPS’ highly skilled and knowledgeable team, paired with the latest state-of-the-art technology, ensures the brand’s continued success and reputation as a premier manufacturer in the industry 

HPS Quality Silicone Hoses

HPS Performance Products specializes in and is best known for manufacturing multi-application silicone hoses. HPS silicone hoses are carefully crafted from only the highest quality 4-ply reinforced high-temperature material. The hoses are available in the following varieties: straight coupler, 1-foot tube, 3-foot coolant tube, charge air cooler hose (CAC), hump coupler, reducer couple her, 45-degree elbow coupler and reducer, and 90-degree elbow coupler and reducer.

HPS Performance Products also carries performance silicone vacuum hoses and silicone heater hoses. You can choose silicone hoses in both standard inch and hard-to-find metric sizes. Stainless steel T-bolt clamps are available to match with the silicone hoses as well. In order to meet the high demand and shorten the turnaround time for its silicone hoses, up to 90 percent of the product is already in stock and ready to ship or pick up from HPS authorized dealers like Vivid Racing. 

HPS Performance Products at Vivid Racing

Vivid Racing carries a comprehensive lineup of HPS Performance Products for a number of different makes, models, and applications. Our extensive inventory of HPS parts includes aluminum tubing, cold air and short ram intakes, vacuum lines, hoses and clamps, intercooler pipes, radiator caps, and much more! If you have any questions regarding the items listed above or have fitment concerns, please contact our expert sales team at (480) 966-3040. We are here to help you through the entire purchase process and make it a pleasant experience.

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