The Lock Plate is designed to prevent the bracket from loosening or coming loose, which could cause the engine oil lines to leak. The Engine Oil Lines Bonnet Bracket is a metal bracket that holds the engine oil lines in place. It is made up of strong and durable material, such as steel, to ensure strength and withstand high operating conditions.Attributes:• Provided with 4 mounting holes to fit the fastener of size 3/8"• Has high strength and wear resistanceApplications:The Lock Plate provides a strong and stable mounting point for the bracket, which helps to prevent it from vibrating or moving under normal operating conditions.