The lower spring plate, designated as H 27080, serves as the foundational support for valve springs in the Sulzer ASL25 diesel engine. It ensures the spring is correctly seated and evenly distributes load during compression and release cycles. Constructed from durable, wear-resistant materials, this plate helps maintain the precise function of the valve mechanism over long operational periods. Its role, though simple in appearance, is critical for the accurate timing and efficiency of the engine’s valvetrain system.