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HPS Performance Products 1.87" 4" Black High Temp 4-Ply Silicone Hump Coupler Hose - HTSHC-187-L4-BLK
HPS Performance Products 1.87" 4" Black High Temp 4-Ply Silicone Hump Coupler Hose - HTSHC-187-L4-BLK - Image 2 HPS Performance Products 1.87" 4" Black High Temp 4-Ply Silicone Hump Coupler Hose - HTSHC-187-L4-BLK - Image 2

If you're looking to step up your game with some serious reliability, this HPS Performance 4-ply silicone straight hump coupler is a solid choice. Built to handle the heat—literally—this coupler meets and even exceeds SAEJ20 standards, making it perfect for those heavy-duty pressure connections you need on your projects. It can take the heat, boasting a max temperature rating of 350°F (177°C), which is a big deal if you're pushing your setup to the limit.

Now, I’ve dealt with my fair share of rubber couplers from the local auto parts store, and let me tell you, they just don’t cut it like this silicone beauty does. The 4-ply reinforced design means it’s built to last, so you won’t be swapping it out every few months. Plus, it’s compatible with water and coolant (just don’t even think about using it with fuel or oil).

One of the standout features here is the hump design. It’s not just for looks—it actually compensates for misalignment and helps absorb vibrations, which is a lifesaver in custom builds or when you’re fabricating turbo or intercooler piping. Whether you’re working on a marine project, an industrial setup, or just tinkering with your DIY intake or radiator cooling system, this coupler has got your back.

In terms of size, it has an inside diameter of 1 7/8" (48mm) and a length of 4", making it versatile enough for a range of applications. The outside diameter measures 2.29" (58mm), and with a wall thickness of 5mm, you can count on it to hold up under pressure.

So, if you’re serious about your setup and want something that can handle the heat and the grind, this HPS coupler is worth considering. It’s black, it’s tough, and it’s ready to get the job done.

  • Max Temperature Rating: 350°F (177°C)
  • Inside Diameter: 1-7/8" (48mm)
  • Outside Diameter: 2.29" (58mm)
  • Length: 4"
  • Reinforced Layer: 4-ply Polyester
  • Wall Thickness: 5mm
  • UPC: 648044899060
Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

HPS Performance Products Logo

About HPS Performance Products

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 Hoses

HPS 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 Racing

Vivid 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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