Gm Ls Head Bolt Kit Odd Size 12 Point 2003 & Earlier Tools secure locking mechanism and a

secure locking mechanism and a positive contact retention system

Inside Diameter of Outer Spring - 0

Auto-Dimming gauge brightness feature

yet withstand abuse and last a lifetime

Gm Ls Head Bolt Kit Odd Size 12 Point 2003 & Earlier Tools secure locking mechanism and aPart Number: AF37 2126 Aeroflow performance head bolts greatly improve your cylinder head to block sealingcompatibilities. This is important in engines with highpower adders such as turbochargers, superchargers or nitrous. They can even be agreat addition to a mildly modified build as insurance against failure. these head bolts are manufactured from aircraft quality 8740 high tensile strength chromolysteel and cold forged to ensure molecular integrity