This versatile 157-tooth steel flywheel from BluePrint Engines is designed to service a variety of Ford and GM crate engine applications. It comes with weights to accommodate 28 oz. external balance, 50 oz. external balance, or neutral (no weight) balance, making it a flexible solution for builders and restorers. Built from durable steel, this flywheel provides smooth clutch engagement, reliable starter engagement, and long-lasting performance for street, strip, and restoration builds. It replaces former part numbers BPPF50157MT and BPPF157T28, ensuring compatibility with a wide range of engines.