In the selection chart below, find the proper Dash Number in far left-hand column, and move horizontally until you arrive in the vertical column headed by the appropriate hose description. At this point, you’ll find the Part Number or Product Number for the recommended Spring Guard. NOTE: For your convenience, the Selection Chart has been simplified. In some cases, it may be possible to use the next smaller spring guard. To check if this possible, compare O.D. of hose to I.D. of spring guard. Allow 1/32″ for installation. To order – Specify the Part/Product Number and the spring guard length desired (in feet).