Brian Crower BC3911 6.6mm Exhaust Valve Guides for Mitsubishi 4G63/EVO

Brian Crower BC3911 valve guides are precision-engineered exhaust valve guides designed specifically for Mitsubishi 4G63 and EVO engines. These 6.6mm valve guides provide superior valve stem support and heat dissipation, critical for high-performance and racing applications.

Key Features:

• 6.6mm outer diameter for precise fitment in 4G63/EVO cylinder heads
• Manufactured from high-quality bronze alloy for excellent wear resistance
• Ensures proper valve alignment and sealing throughout the rpm range
• Reduces oil consumption and prevents valve stem damage
• Direct replacement for OEM exhaust valve guides

Brian Crower valve guides are essential components when rebuilding or upgrading your cylinder head, particularly when installing performance camshafts or higher-lift valve springs. Proper valve guide clearances are critical for maintaining valve control and preventing premature wear in high-performance applications.