Ford Motorcraft Cam Phaser Bolt is specifically designed for use on 2005 to 2010 3 valved 4.6L powered Mustangs when installing new cams. Sold individually.
If your swapping out the stock cams in your 3 valve 4.6L modular engine for something a bit more aggressive you are going to require two new Cam Phaser Bolts. This is because Ford uses "torque-to-yield" style bolts once they have been used and removed, they are useless.
This camshaft phaser bolt is made to the original factory specifications from OEM quality materials for a perfect secure fit.