See all Engine products
Product thumb
HPS Performance Products 5/8" Reinforced Silicone Coolant Cap Black, RSCC-062-BLK
$21.42

If you're diving into the world of cooling systems, you’ll want to check out the HPS Reinforced Silicone Caps. Sure, they might look like your average vacuum caps, but trust me, these bad boys are built for something way more demanding. Unlike those flimsy vacuum caps that can barely handle a little pressure, these caps are made specifically for your cooling system, which means they’re ready to take on the heat—literally.

These caps are crafted with the same attention to detail as HPS's reinforced silicone radiator hoses. What sets them apart? Each cap is constructed with three layers of tough polyester webbing. This means they can handle high temperatures and pressures without breaking a sweat. I’ve used them in my own setup, and I can vouch for their durability. You’ll find that they hold up over time, even when the engine is working hard.

So, what can you use these caps for? Well, they’re versatile. Whether it’s coolant, water, air, or even turbocharger bypass valve ports, these caps have got you covered. Just keep in mind, they aren’t meant for fuel or oil, so don’t go mixing them up. They work great with heater cores and throttle body water ports too, making them a solid choice for a variety of applications.

Here’s a quick rundown of what you can expect:

  • Type: Reinforced Silicone Coolant Cap
  • Temperature Range: -65°F to +350°F (that’s about -54°C to 177°C for the metric folks)
  • Reinforcement: 3-ply Polyester for that extra toughness
  • Color Options: You can grab them in Black or Blue
  • UV and Ozone Resistant: Built to last in harsh environments
  • Inside Diameter: Available in 1/4" (6.5mm) and 5/8" (16mm)

For example, the RSCC-062-BLK is your go-to 5/8" (16mm) Reinforced Silicone Coolant Cap in Black. It’s reliable, tough, and just what you need to keep your cooling system running smoothly. If you're serious about your setup, these caps are definitely worth considering.

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.

Check out these other great products