Key Features
Rated for temperatures up to 350°F, suitable for high-temperature applications.
Reinforced with 3 layers of polyester fabric for durable, pressure-resistant connections.
Suitable for use with coolant, water, air, turbocharger bypass valve ports, vacuum ports, throttle body water ports, heater cores, etc.
Color: Blue.
Inside Diameter: 5/8 inch (16 mm). Overall Length: 1-5/8 inches.
HPS reinforced silicone caps are not compatible with fuel or oil.
HPS Performance 5/8 inch high-temperature reinforced blue silicone caps are specifically designed for installation in cooling systems. Unlike vacuum caps, which lack reinforcement and are intended for lighter use, HPS Performance silicone caps are reinforced with 3 layers of polyester webbing to withstand high temperatures and pressures in 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°F to +350°F (177°C). Reinforcement: 3-layer polyester. Inside Diameter: 5/8 inch (16mm). Color: Blue. Wall thickness: 4mm. Inside length: 1-3/16 inches. Overall length: 1-5/8 inches. UV and ozone resistant. Note: HPS reinforced silicone caps are not compatible with fuel, oil, or petroleum-based products.
Before You Order
〇 Regarding Import Consumption Tax
At Shaft-ya, we cover 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 Check
Our entire product database is based on North American vehicles (USDM). Please confirm whether the product can be installed on a Japanese vehicle (JDM) before placing your order. (If you are unsure if 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 from the tabs on our top page, this does not necessarily mean they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us if you have any questions before ordering.
○ Regarding Shipping
Shipping costs are paid at the time of checkout. Shipping estimates are calculated automatically once you enter your delivery address on the checkout page. For large items such as body parts, the actual shipping cost may occasionally differ significantly from the amount calculated automatically. In such cases, we will contact you individually via email.
All products are generally shipped internationally from our US warehouse. Unlike domestic shipping in Japan, international shipping takes approximately 7 to 14 days, so please allow sufficient time for your order to arrive. If you are in a hurry, please contact us in advance to confirm delivery times. Note that all items are transported by air. They are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Essentially, all products we handle are designed and manufactured outside of Japan. Please note that they are not compliant with the "Japanese Vehicle Inspection System," and we are unable to provide strength inspection documents or similar certifications for this system. Therefore, all parts are sold for "circuit, private land, or off-road use only," and installation and use are at your own risk.
○ Regarding Warranty
Please inspect the contents immediately upon arrival. As 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 exchanges for products with shipping damage, defective items, or items different from what was ordered if you contact us within 7 days of receipt. Furthermore, for products sold through us, all warranty-related matters will be handled "exclusively through us." Please note that we do not handle matters through other companies or distributors located within Japan.