Kibblewhite Valve Seals for use with specific Kibblewhite Valve Guides and Tappets. Kibblewhite solid Viton® valve stem seals are designed to have optimum fitment, allow for maximum lift, and to give maximum life. Kibblewhite Red valve stem seals are resistant to high temperatures, petroleum products and the corrosive gasses that are the by-products of combustion. These seals retain their ability to seal in situations where other materials could harden and allow oil to enter the combustion chamber causing detonation, carbon build up and a loss of power. The Red Ones are truly the racer's choice. Detailed Specifications: Type: Exhaust, intake. Style: 4. Material: Solid Viton. Description: Solid Viton with choker spring and tension spring (O.E.M. style). Quantity: 1. Note: Image is for reference only; actual product may vary according to fitment.