This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. SEPTEMBER 2017 Page 1 of 8 NAVISTAR, INC. Material, Parts, and Process Specifications (MPAPS) NUMBER: MPAPS L-6601 Former Designation: TMS-6601 TITLE: Sound Deadener, Polymeric Molded revised reference standards to MPAPS and updated outdated ASTM Standards Referenced R. Goluch 9/27/2017