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View Full Version : Cylinder Head Bolt Confusion


Cletus Garfunkle
02-25-2021, 07:35 PM
TL;DR: My 1nz-fe head bolts are 9mm Triplesquare bolts I've searched the forum and everything I can find says 8mm Triplesquares are they supposed to be 8mm or 9mm?

I recently got a 1nz-fe out of a 2006 Scion xB. I ran into a problem with the head bolts. I searched on the forum and everything I could find says 8mm Bi hexagon wrench. I bought one and it didn't fit so tried to buy a 9mm could not find any 9mm Triple square/Bihexagon in a 100-mile radius called every auto parts and hardware store. So got on ebay and bought a 9mm works perfect has anyone else had this problem are the head bolts supposed to be 8mm or 9mm?