Feature●Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)●GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.●GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle●GM regularly updates production and service part designs to integrate new materials and technologiesDescription Theyre made fromtough stainless steel alloy and are carefully designed to increase gas flow for more power. They also have hardened stem tips for durability. Strengthen the valve train with these performance replacement valves. Lightweight 2.205 inch intake valve, as used on the COPO racing engines and production LS7 engine. Use to assemble COPO LS7 CNC Bare Head. Sold individually. Eight required per engine.