APDTY 14522 Cylinder Head To Exhaust Manifold Stud Bolt & Nut Set Pack of 10 Fits Select 1992-2011 4.6L 5.4L 6.0L 6.8L Ford Lincoln Mercury Navistar Engines (Replaces W701706-S2, N811313-S431) Commonly Needed From Breaking Due To Rust/Corrosion 10 Studs & Nuts Included (Replaces 1 Side Completely) Used To Attach The Exhaust Manifold To Cyliunder Head on Ford 4.6L 5.4L 6.0L 6.8L Engines Upgraded Stud Design Exceeds OEM Specs