The Chrysler SB Steel SFI Flex Plate – LA 360 Small Block External Balance – 727 & 904 Compatible is a performance-grade flex plate designed for Chrysler small-block engines that require external balancing. Built from durable steel and engineered to meet SFI safety standards, this flex plate provides reliable power transfer between the engine crankshaft and automatic transmission. It is commonly used in high-performance builds, racing applications, and engine rebuild projects requiring dependable drivetrain components.