If you’re looking to enhance your vehicle's performance and reliability, the HPS 4" - 4-1/2" (102mm - 114mm) Silicone Reducer Coupler Hose is a must-have for your setup. Designed with automotive enthusiasts in mind, this high-temp, 4-ply reinforced blue silicone hose is engineered to meet and exceed SAE J20 industry standards, making it perfect for heavy-duty pressure connections.
This silicone reducer coupler hose is versatile and can be utilized in a variety of applications, including:
Whether you’re working on a 2020 Ford F-150 or a 2018 Subaru WRX, this coupler hose will fit seamlessly into your setup, ensuring optimal airflow and temperature management.
The HPS silicone reducer coupler hose is not just built for performance; it’s also designed to withstand the rigors of high-temperature environments. It’s perfect for applications where durability and reliability are critical. The 4-ply construction provides excellent resistance against heat and pressure, making it ideal for both automotive and marine use. Plus, its UV and ozone resistance means it can handle outdoor conditions without degrading.
Owners of various vehicles have praised this coupler hose for its quality and fitment. A 2021 Toyota Tacoma owner remarked, “I used this HPS coupler for my custom intake setup, and it fit perfectly. The quality feels top-notch, and I’ve noticed better throttle response since the install.”
Another 2019 Honda Civic Si user said, “Installed these hoses for my intercooler piping. They’ve held up great under pressure and heat, and the blue color adds a nice touch to the engine bay.”
Upgrade your vehicle’s performance with the HPS HTSR-400-450-BLUE Silicone Reducer Coupler Hose and experience the difference in your setup.
⚠ 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.