See all Engine products
Product thumb
HPS 1 1/16" (27mm) Reinforced Silicone Coolant Cap Black
$24.92

HPS Performance 1-1/16" Reinforced Silicone Coolant Cap - Black

Looking for a robust solution for your vehicle's cooling system? The HPS Performance 1-1/16" (27mm) Reinforced Silicone Coolant Cap in sleek black is just what you need. Designed with precision, this cap fits perfectly onto your cooling system, ensuring that everything runs smoothly.

Built to Last

Unlike standard vacuum caps that lack reinforcement and are only suitable for minor pressure, this HPS cap is crafted with three layers of polyester webbing. This means it can handle the high temperatures and pressures of your cooling system, providing reliable performance for years. Whether you're tackling a long road trip or just commuting to work, you can trust this cap to keep your system sealed and functioning optimally.

Versatile Compatibility

This silicone cap is incredibly versatile. It's not just for coolant; you can use it with water, air, turbocharger bypass valve ports, vacuum ports, throttle body water ports, heater cores, and much more. Its temperature range is impressive, functioning effectively from -65?F to +350?F (or -177?C to +177?C), making it suitable for a variety of applications.

Specifications at a Glance

  • Inside Diameter: 1-1/16" (27mm)
  • Wall Thickness: 5.5mm
  • Inside Length: 2"
  • Overall Length: 2-1/2"
  • UV and Ozone Resistant: Yes

Important Considerations

Keep in mind that while this cap is durable and versatile, it is not compatible with fuel, oil, or any petroleum-based products. Make sure to use it solely within the specified applications to ensure longevity and performance.

Upgrade your cooling system with the HPS Performance Reinforced Silicone Coolant Cap and experience peace of mind knowing your vehicle is equipped with quality parts that deliver when it matters most.

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.

You're seeing this because you're logged into an employee account or you're accessing the site through an internal IP address. This information is not normally visible.
Things
Sale price None
Wholesale price $17.65
Shipping Weight: 1.00
Length: 4
Width: 4
Height: 4
Product Added At Thursday 13 February, 2020
Product Modified At Thursday 10 July, 2025
Imported By ETLOverride
Last Edited By vendordata@vividracing.com
View In Admin

Emissions Info
Carb Approved -
Carb Number -
Epa Status -
Prop65 -
Carb Required -
Vendors
Some placeholder content for the collapse component. This panel is hidden by default but revealed when the user activates the relevant trigger.
Vendor Inv Cost Retail Jobber MAP Core Updated
HPS $14.96 $24.92 $24.92 $24.92 ? 2025-07-10 17:53:29


Check out these other great products