Designed to open at 180 degrees every time, regardless of engine rpm, and it's high-flow design and brass and copper construction eliminate the damaging effects of cycling when you're stuck in stop-and-go traffic. It includes the rubber gasket and has a pressure relief valve.

Product Features:

• Opens sooner than stock at 180 degrees
• High flow design for performance applications
• Includes rubber o-ring seal/gasket
• Incorporates pressure relief valve