Gas Spring for the front window thatcontains compressed gas in a cylinder and uses a piston to exert force.Cat Gas Spring Assemblies are used to allow reduced force release or full extension of a piston and rod combination. With in-house testing and performance history tracking for use in specific applications, you can count on Cat springs for consistent assembly loads, resulting in superior reliability and functionality in your machine. Cat springs are manufactured to precise specifications and are built for durability, reliability, and productivity for the lifetime of your machine. You can trust Cat Springs to help you build it, maintain it, or fix it. No other company knows your equipment like we do — trust in Cat.Application:Consult your owner's manual or contact your local Cat Dealer for more information.