For those of you who take pride in your ride and demand reliability, the HPS AN834-4 Bulkhead Adapter is a must-have component. This adapter is designed to safely pass hoses through firewalls and body panels, ensuring a clean and secure connection for your fluids. Whether you’re working on a custom project or simply upgrading your existing setup, this part is engineered to meet the rigorous demands of automotive enthusiasts.
The HPS AN834-4 is compatible with various HPS fittings, specifically the 150, 250, and 350 series. Its AN-4 size ensures that it fits seamlessly into your existing setup, whether you’re dealing with fuel, oil, coolant, or even nitrous. This is particularly beneficial for owners of performance vehicles looking to streamline their fluid routing without compromising safety.
“I installed the HPS AN834-4 on my 2020 Ford F-150 to run new coolant lines. The fit was perfect, and I was able to route everything cleanly through the firewall without any leaks. Highly recommend for anyone looking to tidy up their engine bay!” - F-150 Owner
“Used this bulkhead adapter in my 2019 Subaru WRX build. It allowed me to easily connect my oil lines through the firewall. The quality is top-notch, and it looks great with the black anodized finish.” - WRX Owner
Upgrade your vehicle’s plumbing with the HPS AN834-4 Bulkhead Adapter and experience the difference in both performance and aesthetics. Don’t settle for less when it comes to your car’s integrity—make the smart choice today!
⚠ 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.