Description KPMI® Red 100% Viton valve stem seals are designed to have optimum fitment, allow, maximum lift, and to give maximum life. KPMI® 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 racers choice.Click Here to Download KPMI® Seal CatalogTypeIntake/ ExhaustMaterialRed Viton®Seal Style5Quantity3 Intake Seals/ 2 Exhaust SealsIntake ReferenceSee Figure 1Intake Stem Diameter4.0mmIntake Overall Length0.320″Intake Seal O.D.0.355″Intake (A)0.285”±0.002”Intake (B)0.245″Intake (C)0.120″Intake (D)0.215″Exhaust ReferenceSee Figure 2Exhaust Stem Diameter4.5mmExhaust Overall Length0.331″Exhaust Seal O.D.0.370″Exhaust (A)0.321”±0.002”Exhaust (B)0.281″Exhaust (C)0.120″Exhaust (D)0.240″Unique Identifier No.FR327789_01GAUS