If you're looking to upgrade your ride or tackle some serious DIY projects, the HPS 4" High Temp 4-ply Reinforced Blue Silicone Straight Coupler Hose is a solid choice. I’ve had my hands on this piece, and let me tell you, it’s built to last. This isn’t just any silicone hose; it meets and even exceeds SAEJ20 industry standards, which means it’s ready for heavy-duty pressure connections. Whether you're working on a custom turbo setup or need something for your radiator cooling system, this hose has got your back.
One of the standout features is its impressive temperature range. This hose can handle temperatures from a chilly -65°F all the way up to a scorching 350°F. That’s pretty remarkable, especially if you’re pushing your engine to its limits. The 4-ply reinforcement ensures that it holds up under pressure, so you don’t have to worry about it blowing out when you need it most.
And let’s talk about versatility. This thing is perfect for marine setups, industrial applications, and of course, those custom projects that we all love to take on. The blue color adds a nice touch under the hood, and it’s UV and ozone resistant, so it won’t degrade over time from exposure to the elements.
Just a heads up, though—this silicone hose isn’t meant for fuel or oil, so keep that in mind when planning your setup. But if you’re looking for a reliable, high-performance coupler, this is it. Here are some specs that might help:
So if you’re ready to take your project to the next level, grab the HPS 4" Silicone Coupler Hose. It’s a reliable piece of gear that delivers on performance and durability.
⚠ 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.