If you’re diving into a custom fabrication project for your ride, the HPS Performance Products AJ300-400 6061 Aluminum Joiner is a must-have component. Designed with automotive enthusiasts in mind, this joiner fits seamlessly into your DIY air intakes, cooling systems, or turbo intercooler piping setups. With its robust construction, this joiner is perfect for anyone looking to enhance their vehicle’s performance and reliability.
This joiner has an outside diameter of 4 inches (102mm) and a length of 3 inches, making it versatile enough to fit various applications across different automotive, marine, and aerospace projects. Whether you're upgrading your 2020 WRX's intake system or fabricating a custom intercooler for your 2018 Mustang GT, this joiner is engineered to meet your needs.
The HPS 6061 Aluminum Joiner stands out due to its high-quality construction and practical applications. Whether you’re a DIYer or a seasoned mechanic, this joiner allows for easy integration into your project, ensuring a secure and leak-free fit. The bead roll design enhances its strength, making it suitable for high-performance setups.
One 2021 Ford F-150 owner mentioned, “I used this joiner to connect my custom intake and it fits perfectly. The 4-inch diameter was just right for my setup, and I haven't experienced any leaks.” Another satisfied customer working on a 2019 Subaru STI noted, “This joiner made my intercooler piping installation a breeze. It’s solid and looks great too!”
When it comes to enhancing your vehicle’s performance, the HPS AJ300-400 6061 Aluminum Joiner is an essential component for anyone serious about their automotive projects. Get yours today and take the first step towards optimizing your custom 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.