Review on 🔒 Pair Locking Hubs for 2004-2015 Ford F150, 2003-2015 Ford Expedition, 2006-2008 Lincoln Mark LT, 2003-2015 Lincoln Navigator | Replaces 600-105 7L1Z3C247A (2 PCS) by Matt Morgan

I'm a master mechanic... When operated, the synchronizer clutch does not pull as far as in the factory OEM version, so there is still a grinding gear noise. Did a comparison between old and new. One side was worse than the other and I ended up reinstalling one of the old vacuum actuators that was still in good condition. If you've done this renovation you know how disappointed I am.