Kibblewhite 20-2031C Cast Iron Exhaust Valve Guide for Harley-Davidson Panhead and Shovelhead

After chemically separating several samples of cast iron material , analysis and evaluating the test data, we decided to have our own specification of cast iron made exclusively , us. We specify elements such as carbon, silicon, manganese, nickel, chromium, copper and sulfur to produce a highly pearlitic structure with dense fine grains , excellent wear resistance.

The Kibblewhite 20-2031C cast iron exhaust valve guide is designed for Harley-Davidson Panhead and Shovelhead engines from 1948 through 1977. This heavy-duty replacement guide supports accurate valve alignment and dependable operation in demanding vintage motorcycle applications.

Manufactured from cast iron, the guide features a heavy-duty construction intended to provide reliable service in rebuilt or restored cylinder heads. Its exhaust-specific design is suitable for compatible Harley-Davidson engines, helping maintain proper valve-train geometry and supporting consistent engine performance.

This Kibblewhite valve guide is supplied with an oversize outside diameter of +0.001 inch for applications requiring additional material to achieve the correct interference fit during installation. Professional measurement, machining, and installation are recommended to ensure the guide is matched properly to the cylinder head and valve assembly.

Use the Kibblewhite 20-2031C as a quality replacement component for vintage Harley-Davidson Panhead and Shovelhead cylinder head service. Verify engine compatibility, guide position, and required fitment specifications before installation.

Features:

• Brand: Kibblewhite
• Part Number: 20-2031C
• Material: Cast iron
• Application: Exhaust valve guide
• Compatibility: Harley-Davidson Panhead and Shovelhead engines from 1948 through 1977
• Fitment: +0.001-inch oversize outside diameter
• Construction: Heavy-duty design
• Quantity: One valve guide