This Pioneer 871022 flexplate is a high-quality part designed for Ford Modular engines. With a 164-tooth count and an internal balance, this steel flexplate is built to last. The ring gear outside diameter is 12.24 inches, and it has a rimmed flywheel type. This flexplate is suitable for automatic transmission types and comes with performance enhancements. It is also compatible with OE/OEM part number 4C3Z6375AA and interchange part number PIO-871022. Although this item is not a vintage part, it is a great addition to any car or truck for improved performance.