4-Ply Silicone Hose End Cap With Polyester Reinforcement For Coolant And Vacuum Lines, Five Sixteenth Inch Inner Diameter Eight Millimeter, Built For Hot Engine Temps, Black Outer With Red Inner, Turbo Bypass Valve Cap

4-Ply Silicone Hose End Cap, 5/16 in ID, High Temp
✔️ 8 mm ID, 30 mm long, 5 mm thick, black outer, red inner

This compact silicone hose end cap seals coolant and vacuum hose ends in automotive systems. Built to withstand hot engine temps and coolant exposure, it’s ideal for turbo bypass and radiator connections.

✅ Inner diameter: 8 mm (5/16 in) ID
✅ Length: 30 mm (1.18 in); Thickness: 5 mm (0.2 in)
✅ Material: silicone with multi-layer polyester reinforcement for durability
✅ Color: black outer, red inner; suited for coolant, engine oil, and vacuum lines

💡 What is a silicone hose end cap used for in automotive cooling and vacuum systems? This handy seal protects hose ends from leaks and contamination. - Handy for sealing coolant lines and vacuum hoses in turbo bypass and radiator setups - Helps resist high engine temperatures and coolant chemistry - Works with 8 mm ID hoses and 30 mm length