3M Undercoating 08881 is a multi-purpose, non-paintable aerosol coating designed for use on undercarriages, wheel wells, frame rails, fenders, and other automotive parts. Other suggested applications include hiding welding and repair marks, sound dampening, abrasion resistance and corrosion protection. 3M Undercoating 08881 is a cost-effective choice for protecting the areas most vulnerable to corrosion and impact from the road where paint isn't enough.