The STANDARD IGNITION X 4507 SI Starter Bushing is a precision engineered component designed to ensure optimal alignment and function within the starter motor assembly Manufactured with high grade copper this bushing offers superior electrical conductivity and durability effectively reducing frictiond wear during engine cranking Its precise dimensionsa an inner diameter of 0 472 inches and an outer diameter of 0 514 inchesa facilitate a seamless fit minimizing the risk of misalignment and associated mechanical failures By incorporating the X 4507 SI Starter Bushing into your fleet s maintenance regimen you can enhance the reliability and longevity of your vehicles starting systems thereby reducing the frequency of costly repairs and minimizing downtime This proactive approach not only ensures consistent engine starts but also contributes to the overall efficiency and productivity of your fleet operations