Alright, gearheads and DIY aficionados, let’s talk about this HPS 3/8" (9.5mm) blue silicone heater hose. If you’re in the market for something that can take some serious heat—literally—this is it. It’s not just your run-of-the-mill hose; it’s built to handle the tough stuff, meeting and exceeding SAEJ20 standards. So, whether you're working on a heavy-duty project or just need something reliable for your custom turbo setup, this hose has got your back.
First off, the material is premium industrial-grade silicone. We’re talking heavy wall design here, which means it can handle extreme pressure without breaking a sweat. It’s ultra-flexible too, which makes it a breeze to work with, especially when you’re fitting it into tight spots. And let’s not forget about the tensile strength; this hose is built to last.
Now, let’s get into some specifics. This hose can handle temperatures from -65°F to a scorching +350°F (that’s about 177°C for you metric folks). It has an inside diameter of 3/8" (9.5mm) and an outside diameter of 5/8" (15.5mm). With a maximum working pressure of 80 psi and a bend radius of just 1-1/2", it’s perfect for those tricky angles in your cooling system or custom piping.
Just a heads up, though: this silicone hose isn’t compatible with fuel or oil, so keep it to water and antifreeze (coolant) applications. It’s also resistant to coolants, cracking, and ozone, so you won’t have to worry about it aging prematurely or leaking. Plus, it ships as a single continuous roll, so you can cut it to the length you need without dealing with multiple sections.
So, if you’re looking to upgrade your cooling system or tackle a custom project, this HPS silicone heater hose is a solid choice. It’s tough, flexible, and ready to take on whatever you throw at it.
⚠ 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.