Manganese Valve Guide Precision-machined guides
Manganese bronze guide material is softer than nickel aluminum bronze valve guides
Excellent heat conductivity which promotes long valve life
Guides can be easily reamed with a battery-operated or electric drill and finished with a high-quality ball hone
Eliminates the need for expensive honing equipment that would be required for nickel bronze valve guides
Machined to accept OEM and aftermarket seals
Made in the U.S.A.