If you're diving into some serious custom work, the HPS 4" (102mm) High Temp 4-ply Reinforced Silicone 45 Degree Elbow Coupler Hose is a solid choice. This isn't just any hose—it's built to handle the heat and pressure that come with high-performance setups. Whether you're fabricating turbo or intercooler piping, or even working on your DIY intake or radiator cooling system, this elbow coupler has got your back.
What makes it stand out? For starters, it meets and exceeds SAEJ20 industry standards, so you know it’s tough enough for heavy-duty pressure connections. It’s designed for temperatures ranging from -65°F to +350°F (that’s about -54°C to 177°C), making it perfect for those high-heat applications where lesser hoses would fail. The reinforced 4-ply construction means you won't have to worry about it collapsing under pressure, and the wall thickness of 4.5mm ensures durability without being overly bulky.
Now, let's talk fitment. This hose has an inside diameter of 4 inches (102mm) and an outside diameter of 4.41 inches (112mm), with a leg length of 4 inches on each side. So, it’s got the dimensions to fit snugly into your setup without any fuss. Just a heads-up though: this silicone hose isn’t compatible with fuel or oil, so keep that in mind when you're planning your build.
And for those worried about the elements, don’t sweat it. This hose is UV and ozone resistant, meaning it can take a beating from the sun and the elements without degrading. Plus, it comes in a vibrant blue that not only looks great but also stands out in your engine bay.
In short, if you're looking for a reliable, sturdy elbow coupler that can handle the heat and pressure of your high-performance projects, the HPS 4" Silicone Elbow is worth considering. It's built for those who take their setups seriously and want something that can keep up with the demands of their passion.
⚠ 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.