This radiator cap ( AT173610) features a 15 PSI pressure rating and is designed as a direct-fit replacement for use with select models including 110, 120, S560, S690, 9560, 9660, 9760, 9770, 160, 200, 210, 2054, 2554, and 3554.It is engineered to maintain proper cooling system pressure and support consistent coolant flow.For full compatibility details, refer to the product images and specifications.