Oversize Intake Valve Guide. Fits Big Twin 1948-1979. +.004in. Outside Diameter
Oversize Intake Valve Guide. Fits Big Twin 1948-1979. +.004in. Outside Diameter
Oversize Intake Valve Guide. Fits Big Twin 1948-1979. +.004in. Outside Diameter

Oversize Intake Valve Guide. Fits Big Twin 1948-1979. +.004in. Outside Diameter

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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.

* OD = 0.5690" (+0.004" Oversize)

* ID = 0.3745"

* Replaces OEM # 18141-79 & 18167-49

Matching Exhaust Guide # KPM-20-2034C

Valve Guide Seal # KPM-71011-4