KIBBLEWHITE Manganese Valve Guide — 0.3760" ID, 0.5650" OD, Standard – 48-69, 72 Big Twin

Precision-machined manganese valve guides provide easy finishing and durable performance. 🔧

• Precision-machined guides
• Manganese bronze guide material is softer than nickel aluminum bronze valve guides for easier honing
• Excellent heat conductivity which promotes long valve life
• Can be reamed with a battery-operated or electric drill and finished with a high-quality ball hone
• Eliminates the need for expensive honing equipment required for nickel bronze valve guides
• Machined to accept OEM and aftermarket seals
• Made in the USA 🇺🇸
• Requires the use of either Viton® or teflon valve seals. No machining required.