Exhaust Manifold Set GM LS w/2.5in Outlet 2005-chevrolet-silverado-2500-hd-esi2278428 032 in Compression Thickness -

032 in Compression Thickness - Driver Side - Multi-Layer Steel - Ford Modular - Each

Jam Nut - 5/8-18 in Right Hand Thread - Aluminum - Natural - Set of 50

Every exhaust header has been designed specifically for your application to get the most horsepower and torque out of the engine

Fitting - Y Block - 8 AN Female Inlet - Dual 6 AN Female Outlets - Aluminum - Black Anodized - Each

810 in Head - 11/32 in Valve Stem - Stainless - Edelbrock Victor Big-Block / Victor Max Wedge - Mopar B / RB-Series - Each

Exhaust Manifold Set GM LS w/2.5in Outlet 2005-chevrolet-silverado-2500-hd-esi2278428 032 in Compression Thickness -Exhaust Manifold LS Cast Iron 2. 5 in Outlet Ductile Iron Natural GM LS Series Pair