Key Features
Rated for temperatures up to 350°F, making them suitable for high-temperature applications.
Silicone is reinforced with 3 layers of polyester woven fabric to provide a durable, pressure-resistant connection.
Suitable for use with coolant, water, air, turbocharger bypass valve ports, vacuum ports, throttle body water ports, heater cores, and more.
Color: Red.
Inner Diameter: 5/16 inch (8mm). Total Length: 1-1/2 inches.
HPS reinforced silicone caps are not compatible with fuel or oil.
HPS Performance 5/16 inch high-temperature reinforced red silicone caps are specifically designed for installation in cooling systems. Vacuum caps lack reinforcement and are intended for such use. HPS Performance silicone caps are reinforced with 3 layers of polyester webbing to withstand the high temperatures and pressures of cooling systems for many years. Suitable for use with coolant, water, air, turbocharger bypass valve ports, vacuum ports, throttle body water ports, heater cores, etc. Temperature range: -65°F to +350°F (177°C). Reinforcement layers: 3-layer polyester. Inner Diameter: 5/16 inch (8mm). Color: Red. Wall thickness: 4mm. Inner length: 1-3/16 inches. Total 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 Shafutoya shopping site, we pay the import consumption tax incurred at the time of import on your behalf, so there are no additional charges beyond the total amount paid at checkout.
〇Compatibility Confirmation
Our entire product database is based on North American vehicles (USDM), so please confirm compatibility with Japanese vehicles (JDM) before placing your order. (If you are unsure whether a listed product fits 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 our homepage tabs, 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 costs are paid at the time of payment. Shipping estimates are calculated automatically on the checkout page once you enter your shipping address. For large items such as body parts, the automatically calculated shipping cost may rarely differ significantly from the actual shipping cost. In such cases, we will contact you individually via email.
All products are generally shipped internationally from our US warehouse. Unlike domestic Japanese shipping, international shipping takes about 7 to 14 days, so please order with sufficient time. If you are in a hurry, please contact us in advance to confirm delivery times. All products are transported via air freight. They are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Please be aware that all products we handle are designed and manufactured outside of Japan. They are not compliant with the "Japanese Vehicle Inspection System," and we are unable to provide strength study documents or similar for this purpose. Therefore, all parts are sold for "circuit, private property, or off-road use only," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. Since all products are shipped internationally from outside Japan, there is a possibility of shipping damage to the packaging or the product itself. Please understand that we will only provide returns, refunds, or replacements for damaged, defective, or incorrect items if notified within 7 days of receipt. Please note that for products sold through our company, warranty support will be handled "exclusively through us." We do not provide support through other companies or distributors located within Japan.