scope:

This specification defines the minimum durability requirements of all thermal, foam gasket and sound absorption/insulation applications, where various materials are combined to provide an assembly having thermal and/or acoustical (sound absorption/barrier/insulation) and/or functional features. This includes interior passenger, luggage compartment, and engine compartment thermal and/or acoustical (sound absorbing/barrier/ insulation) parts. This document also includes high temperature applications such as exhaust shields. In addition, ultra high temperature parts exposed to heat from turbochargers, EGR systems and exhaust pipes are also included.

• Acoustical wheel arch/well liners and underbody/engine shields are not in scope for this performance specification. Use WSS-M99P32-D2/D3/D4/D5.