Kibblewhite 20-4096C Cast Iron Valve Guide +0.002 Oversize for Harley Knucklehead

The Kibblewhite 20-4096C precision valve guide is engineered specifically for Harley-Davidson Knucklehead engines (1936-1947). This +0.002" oversize guide fits both intake and exhaust applications, providing a reliable replacement for worn valve guide bores.

Key Features:

• Premium cast iron construction with proprietary metallurgy for superior wear resistance
• +0.002" oversize diameter for machined or worn guide bores
• Fits both intake and exhaust positions
• Highly pearlitic structure with dense fine grain for extended service life
• Precision-manufactured to exacting tolerances
• Direct replacement for Harley-Davidson Knucklehead 1936-1947

Kibblewhite Precision Machining produces these valve guides using a custom cast iron specification developed through extensive metallurgical analysis. The precisely controlled carbon, silicon, manganese, nickel, chromium, copper, and sulfur content creates an optimized material that delivers excellent wear characteristics and long-term durability in demanding engine environments.