Kibblewhite KPM-71011-4 Valve Guide Seals Viton for Harley-Davidson Big Twin 48-79

KPMI® Red 100% Viton valve stem seals are designed to have optimum fitment, allow , maximum lift, and to give maximum life. KPMI® Red valve stem seals are resistant to high temperatures, petroleum products and the corrosive gasses that are the by-products of combustion. These seals retain their ability to seal in situations where other materials could harden and allow oil to enter the combustion chamber causing detonation, carbon build up and a loss of power. The Red Ones are truly the racers choice.

Specs
Type: Intake/ Exhaust
Material: Red Viton®
Reference: See Figure 1
Quantity: 4
Stem Diameter: 3/8"
Overall Length: 0.516"
Seal O.D.: 0.661"
A: 0.562”±0.002”
B: ---
C: ---
D: 0.210"

Note: Use the diagram and specifications to ensure your valve guide shares the same dimensions for a proper fit

Important Note: To use these seals in HD® SHOVELHEAD™ 80" 1978-1983, it is required to modify the guides with a 0.562" Ø x 3/8" Pilot seal cutter