Key Features
Rated for temperatures up to 350 degrees F for high-temperature applications.
Silicone is reinforced with 3-ply polyester weave, providing a highly durable, pressure-resistant connection.
Suitable for use with coolant, water, air, turbocharger bypass valve ports, vacuum ports, throttle body water ports, heater cores, etc.
Color: Blue.
Inside Diameter: 5/16 inch (8mm). Overall Length: 1-1/2 inches.
HPS reinforced silicone caps are not compatible with fuel or oil.
HPS Performance 5/16 inch high-temperature reinforced blue silicone caps are specifically designed for installation in cooling systems. Vacuum caps lack reinforcement and are intended for that purpose. HPS Performance silicone caps are reinforced with 3-ply polyester webbing to withstand the high temperatures and pressures of cooling systems for years. Suitable for use with coolant, water, air, turbocharger bypass valve ports, vacuum ports, throttle body water ports, heater cores, etc. Temperature range: -65 degrees Fahrenheit to +350 degrees Fahrenheit (177 degrees Celsius). Reinforcement: 3-ply polyester. Inside Diameter: 5/16 inch (8mm). Color: Blue. Wall Thickness: 4mm. Inside Depth: 1-3/16 inches. Overall Length: 1-1/2 inches. UV and ozone resistant. Note: HPS reinforced silicone caps are not compatible with fuel, oil, or petroleum-based products.
Before Ordering
〇 Regarding Import Consumption Tax
At the Shaftoya shopping site, we pay the import consumption tax incurred at the time of import on your behalf, so you will not be charged any additional fees beyond the total amount paid at checkout.
〇Checking Compatibility
Our entire product database is based on North American vehicles (USDM), so please verify whether parts are compatible with Japanese vehicles (JDM) before placing your order. (If you are unsure whether a listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to look into it for you.)
If you place an order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, make, and model on the tabs on our homepage, this does not necessarily mean they will fit Japanese model vehicles without modification.
All product descriptions have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Shipping
Shipping fees are paid at the time of checkout. Shipping estimates are calculated automatically once you enter your shipping address on the checkout page. For large items such as body parts, the actual shipping cost may occasionally differ significantly from the automated calculation. In such cases, we will contact you individually via email.
Essentially, all products are shipped internationally from our U.S. warehouse. Unlike domestic shipping in Japan, international shipping takes approximately 7 to 14 days, so please allow sufficient time when ordering. If you are in a hurry, please contact us in advance to confirm delivery times. Note that all products are transported by air; they are never shipped by sea freight.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Basically, all products we handle are designed and manufactured outside of Japan. Please understand that they are not compliant with the "Japanese Vehicle Inspection System," and we cannot provide documents such as strength calculation reports for Japanese vehicle inspection purposes. Therefore, all parts are sold for use on circuits, private property, or off-road, and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents of your order immediately upon arrival. Since all products are shipped internationally from outside Japan, there is a possibility that packaging or products may sustain shipping damage. We will only provide returns, refunds, or replacements for items with shipping damage, defective products, or incorrect items if notified within 7 days of receipt. Please understand that for products sold through our company, warranty support will be provided "exclusively through us." We do not provide support through other companies or distributors located within Japan.