Kibblewhite KPM-20-4320C Cast Iron Standard Intake/Exhaust Valve Guide for Harley-Davidson Big Twin 84-04/Sportster 86-03 w/Standard Outside Diameter OEM Replacement

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/ Exhaust
Outside Dia, (G): 0.5620"(Std.)
A: 0.375"
B: 0.375"
C: 1.700"
D: 2.025"
E: ---
F: 0.3095"