If you're already splurging on a new shifter handle, then it just makes sense to upgrade the boot and bezel at the same time. That way you'll get the feeling, and appearance, of a totally new shifter.

In addition to adding style to your interior, the primary purpose of shifter boots is to keep the area surrounding your shifter handle clean and to provide structural support while you are shifting gears. The lower boot bolts underneath the floor pan of your Mustang. It's designed to protect your shifter from weather and debris. The upper boot is the part you see every day, wrapped around the shifter lever.

Both shifter boots can need replacement over time, from use and from debris. Keeping them in good condition is necessary in order to keep your shifts smooth for years to come.