The Insulator Kit is a practical solution for insulating your vehicle's parts. Made of durable polyurethane, this kit includes four MA36000 and four MA36500 insulators. Designed to fit OE parts Gaff 12039 and Mack, this kit provides excellent insulation and protection. With its high-quality materials and easy installation, the Insulator Kit is a reliable choice for enhancing the performance and longevity of your vehicle's parts.