ATS Diesel's Premium Black Oxide exhaust manifold studs are 12.9 grade steel to make them stronger than stainless steel and designed to last while still looking good.

• Higher Tensile Strength (over 185,000psi)
• Higher Clamping Force (Torque to 40 ft-lbs)
• (12) Studs includes (12) Washers and (12) 12 Point Nuts

Fitment Notes:

• 1994-1998 5.9L 12V - Aftermarket exhaust manifold only
• 2003-2007 5.9L 24V CR - Requires removal of factory heat shield