Energy Suspension has developed a Hyper-Flex polyurethane replacement exhaust isolator for Peterbilt replacing the easily damaged OE rubber isolator. Resistant to the elements, contaminants and oils, the polyurethane isolator provides long-lasting support and prevents damaging vibration. Innovative three-piece design allows quick installation with hand tools. The replacement part is available at a fraction of the cost of the OE replacement components and will last up to ten times longer than rubber.