Kibblewhite KPM-20-2050C Cast Iron Standard Intake Valve Guide for Harley-Davidson Big Twin 80-84 w/Standard Outside Diameter

Cast Iron: 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.

Specs
Quantity: 1
Type: Intake
Outside Dia, (G): 0.6250"(Std.) (+0.025") 
A: 0.450"
B: 0.540"
C: 0.755"
D: 1.370"
E: 0.745"
F: 0.3745"