3/4 Inch ID Silicone Hose End Cap With 3 Ply Polyester Layer For High Temp Engine Coolant Lines Durable Turbo Bypass Vacuum Cap 40mm Outer Diameter 4.5mm Wall Black

3/4 in ID Silicone Hose End Cap for High-Temp Cooling
✔️ ID 19mm, OD 40mm, wall 4.5mm; silicone cap, 1 piece

This silicone hose end cap seals unused coolant and other fluid lines in automotive engines. It’s ideal for bypass setups and turbo lines where heat and chemical resistance matter.

✅ Inner diameter: 3/4" (19 mm)
✅ Outer diameter: 40 mm (1.57 in)
✅ Wall thickness: 4.5 mm (0.18 in)
✅ Material: silicone with 3-ply polyester outer layer
✅ Color: black
✅ Pack: 1 piece

💡 What is a silicone hose end cap used for in engine cooling systems?

A handy cap that blocks leaks and keeps lines clean.

• Seals unused coolant, oil, and other fluids in lines
• Withstands high engine temperatures and coolant chemistry
• Provides a simple, secure fit for maintenance or bypass work
• Useful for turbo bypass vacuum lines and diagnostic ports