Kibblewhite Precision Manganese Bronze Intake Valve Guide - Standard 20-2120M

Precision Machined Guides. Manganese bronze guide material is softer than nickel bronze replacement valve guides. Excellent thermal conductivity promotes long replacement valve life. The hardness of the material helps support valve guide longevity. Guides can be easily reamed with a power or battery drill and finished with a ball bore. Eliminates the need for expensive honing equipment that would be required for nickel bronze replacement valve guides. Machined to accept OEM and aftermarket seals. Great choice for the home builder. Made in the USA. O.D.: (G): 0.5620in./ Std.. A: 0.650 in. B: 0.700 in. C: 0.800 in. D: 1.400 in. E: 0.615 in. F: 0.3098 in. Note: Special shouldered guide accepts 0.600 in. lift aftermarket valve stem. 0.420 in. top of guide accepts KPMI OEM style seal 20-20620, steel lined made with Viton seal 20-2015 and solid white PC style seal 20-2009