Silicone Coolant Cap 3/8 9.5mm Reinforced Hose End Cap with Clamp, Vacuum Port Plug for Water Bypass Turbo System, High Temperature Automotive Cooling Seal Kit

This silicone coolant cap is engineered for reliable sealing in demanding automotive systems. Made from reinforced multi layer silicone, it offers strong resistance to heat, pressure, and long term wear. The 3/8 inch 9.5mm design ensures a secure and stable fit for hose ends, vacuum ports, and coolant connections. Paired with a durable clamp, it enhances sealing performance and helps prevent leaks under high pressure conditions. Designed for use in turbo bypass systems, throttle body ports, and cooling systems, this cap provides dependable performance for both daily driving and performance applications.

• Built with multi layer reinforced silicone, this coolant cap delivers excellent durability and flexibility. It resists cracking, deformation, and aging under continuous heat and pressure in automotive environments
• Designed for precise 3/8 inch 9.5mm inner diameter applications, ensuring a tight and stable connection. Helps maintain a secure seal for hose ends, vacuum ports, and coolant systems
• Comes with a durable clamp that improves sealing performance and reduces the risk of leakage. Ideal for high pressure and high temperature automotive systems
• Suitable for coolant systems, turbo bypass setups, vacuum lines, throttle body ports, and water pathways. Works for both maintenance and performance upgrades
• Engineered to withstand temperatures up to 350F, providing reliable sealing performance in demanding engine environments