Keep your cylinder head freeze plugs from blowing out when running turbochargers with high amounts of boost, potentially causing high internal cooling system pressures
Includes 4 freeze plugs, and mounting bolts (enough for both cylinder heads - front and rear)
Made in Wichita Kansas from aerospace grade, USA produced, billet aluminum
Compatible with all GM gen III and IV cylinder heads
Install the retainer plates over the top of the existing freeze plugs in your heads. These can be mounted on the front and rear of each cylinder head