5.3 6.0 LQ9 LS1 LS6 LS2 LS3 Header Exhaust Manifold Bolts, Stainless Steel Use With 5.3 6.0 LQ9 LS1 LS6 LS2 LS3 Header Exhaust Manifold Stainless Steel Bolts And Lock Washers Set Includes 12 Header / Exhaust Manifold Stainless 18-8 Grade & 12 Lock Washers Bolts have Allen Socket Head Corrosion Resistant Bolts