HINSON ARP LS Exhaust Manifold Header Bolts - Set of 12 Works on all LS1, LS2, LS3, LS6, LS7, LS9, LSA, LSx, Gen 5 LT1, and all truck engines (4.8, 5.3, 6.0, & 6.2) HINSON ARP LS Exhaust & Header Bolt & Washer Kit - Set of 12 Fits OEM Exhaust Manifolds and Aftermarket Headers All exhaust manifold bolts (ARP or not) should be installed with anti-seize lubricant