BC Brian Valve Stem Seals for 4G63 Evo/DSM (BC3977) Prothane • Up to 64% Flow

• Up to 64% Flow Increase

• Dyno Proven gains of up to 18 hp and 14 lb-ft

• SAE J30R7 rated PCV/Emissions hose

• 047" Wall (1

160 lbs/in (214% Stiffer than Stock)

BC Brian Valve Stem Seals for 4G63 Evo/DSM (BC3977) Prothane • Up to 64% FlowThese Viton seals allow a carefully defined amount of engine oil from the cylinder head into the combustion chamberto lubricate the rotating valve stem in the valve guide. BC valve stem seals are produced from high performance materials for increased part life and lower wear. Vehicle Fitment: 1992 2006 Mitsubishi Evolution I IX (Evo 1 9) 1990 1999 Mitsubishi Eclipse GST GSX 1990 1998 Eagle Talon TSi 1990 1994 Plymouth Laser RS 1991 1992 Mitsubishi