If you're diving into some serious performance upgrades or DIY projects, this HPS Performance 4-ply silicone straight hump coupler is a solid choice. Built tough to meet and beat SAEJ20 standards, it’s made for heavy-duty pressure connections and can handle the heat like a champ—up to 350°F (177°C) to be exact. So, if you’re working on a custom turbo setup or need something reliable for your radiator cooling system, this coupler has got your back.
What sets this coupler apart from the rubber ones you find at the local auto parts store? Well, for starters, it’s got a 4-ply reinforced silicone construction. This means it’s not just going to wear out after a few uses like those cheaper options. The hump design is pretty clever too; it helps compensate for any misalignment and dampens vibrations, making your setup a lot smoother.
Now, let’s talk specifics. This coupler has an inside diameter of 1 7/8" (or about 48mm), which should fit nicely in a variety of applications. It’s 6" long, giving you enough length for a solid connection without being too bulky. Just a heads up: while it’s great for water and coolant, it’s not meant for fuel or oil, so keep that in mind while planning your project.
Whether you're in the marine world, industrial setups, or just tinkering with your car’s intake system, this coupler is versatile enough to get the job done. And hey, it comes in a sharp blue color that can add a nice touch to your engine bay. Just remember, it’s all about the details when you’re building something special.
⚠ 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.