If you're diving into some serious automotive work, let me tell you about the HPS black silicone reducer coupler hose. This isn’t just any hose; it's built to handle the heat and pressure that come with high-performance applications. With an inside diameter that stretches from 1-7/8 inches to 2-1/2 inches, and a solid 3-inch length, it’s versatile enough to fit a variety of setups. Whether you're working on turbo diesel trucks, custom cooling systems, or even getting into some DIY turbo intercooler piping, this hose has got your back.
Now, let’s talk about what makes this hose stand out. The 4-ply reinforced design means it’s not just tough on paper—it's ready to take on the real world. It can handle a maximum working pressure of 80 psi, which is pretty impressive for a hose of this size. And when it comes to temperature, it’s rated for a range from -65°F to a scorching 350°F (that’s about 177°C for those of you who prefer metric). So whether you're working in the dead of winter or in the heat of summer, this hose won’t let you down.
One thing to keep in mind: this silicone hose isn’t compatible with fuel or oil, but it plays nice with air, water, and coolant. So if your setup involves those fluids, you’re golden. Plus, it meets and exceeds SAEJ20 industry standards, which means you can trust it for heavy-duty pressure connections.
As for the specs, the wall thickness is around 4.5mm, so you know it’s built to last. It’s also UV and ozone resistant, which is a nice touch if you’re going to have it exposed to the elements. And just to back up its quality, HPS offers a limited lifetime warranty on this product, giving you peace of mind with your purchase.
In short, if you're looking for a reliable, high-performance silicone reducer coupler hose that can handle the tough stuff, the HPS 1-7/8" - 2-1/2" ID hose is worth considering. It's not just a piece of rubber; it’s a solid investment for anyone serious about their automotive projects.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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 HosesHPS 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 RacingVivid 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.