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Vivid Racing Gear 
HPS High Temp 4-Ply Reinforced Silicone Bypass Loop Kit (Part #57-1864-BLK)
If you're looking to simplify your LS engine setup, the HPS High Temp 4-Ply Reinforced Silicone Bypass Loop Kit is your go-to solution for bypassing the cabin heater on LS family engines, including LS1, LT1, and LQ9. Whether you're working on a classic muscle car or a modern swap, this bypass loop is engineered to make your installation straightforward and hassle-free.
Fitment
This kit is compatible with any LS engine that features 5/8" and 3/4" heater supply and return ports. It's perfect for those who want to eliminate the cabin heater without the worry of air pockets forming when capping off heater lines. It’s a must-have for LS engine builds where every detail counts.
Key Features
- Designed specifically for LS family engines (LS1, LT1, LQ9) with 5/8" and 3/4" heater ports.
- Lowest profile heater loop on the market at just 3 inches tall, ensuring it fits snugly in tight engine bays.
- Prevents air pockets that can develop when capping off heater lines, keeping your cooling system efficient.
- Engineered to withstand extreme temperatures and high-pressure conditions, with a maximum temperature rating of 350°F (177°C).
- Includes 100% stainless steel embossed hose clamps that are industrial-grade, ensuring a secure fit without cutting through the silicone hose.
Specifications
- Product Type: Silicone Heater Bypass Hose
- Color: Black
- Application Notes: Compatible with LS, LT, and LQ engines
Customer Feedback
One satisfied LS1 Camaro owner shared, "I installed the HPS bypass loop when I swapped my engine. The fit was perfect, and I love that it’s so low profile. It cleared up a lot of clutter in the engine bay and made my cooling system simpler. No more worries about air pockets!"
For those who are serious about their LS builds, the HPS High Temp 4-Ply Reinforced Silicone Bypass Loop Kit is a reliable, performance-oriented upgrade that keeps things clean and efficient under the hood. Say goodbye to complications and hello to a streamlined setup!
Proposition 65
⚠ 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.
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