OER Parts offers a wide selection of Cowl, Dash & Firewall Insulation and Sound Deadeners for your Plymouth Duster. OER Parts offers Plymouth Duster Acousti Shield Insulation, Plymouth Duster HushMat Insulation, Plymouth Duster Dynamat Xtreme Interior Insulation, Plymouth Duster Quiet Ride Insulators, Plymouth Duster Thermo-Tec, Plymouth Duster Thermo-Guard FR, Plymouth Duster Firewall Pad Retainer Clips, Plymouth Duster LizardSkin Sound Control, and Plymouth Duster LizardSkin Sound Control & Ceramic Insulation Kit.