HPS Performance Products EPCC-005x10 Silicone Coolant Bypass Cap - 10-Pack

The HPS Performance EPCC-005x10 is a convenient value pack of 10 high-quality silicone end caps designed to plug and seal unused coolant ports, heater hose barbs, bypass nipples, and other open fittings in your cooling system. Whether you're deleting the heater core, performing an engine swap, or simplifying your cooling system layout, these caps provide a clean, reliable, and pressure-rated seal.

Key Features:

• Pack of 10 silicone end caps — ideal for shop use or multi-port applications
• Made from high-grade silicone for excellent heat, pressure, and chemical resistance
• Withstands continuous temperatures up to 350°F (177°C)
• Rated for cooling system pressures — no cracking, splitting, or deforming over time
• Flexible design allows easy installation and removal without special tools
• Compatible with standard coolant, antifreeze, and water wetter solutions
• Provides a professional, OEM-quality finished appearance

HPS Performance silicone caps are a trusted solution for motorsports builds, street performance upgrades, and engine bay clean-up projects. The EPCC-005x10 bulk pack ensures you always have caps on hand for any port that needs to be blocked off cleanly and securely.