Boots that protect CV joints from dirt and moisture.
Cracked boots allow grease loss and cause rapid joint wear. Match the boot by joint diameter, shaft size and length. Ensure clamps are tight and grease volume is correct. Early replacement helps avoid complete joint failure. A secure boot helps CV joints run clean in daily driving.
Heat, age and road debris can weaken the rubber.
Use the amount supplied with the kit or specified for the joint.
It risks joint failure as grease escapes and dirt enters.