Pioneer SFI certified flexplate are made of machined steel that exceeds factory specifications. This flexplate is also a fully inspected unit that uses a dichromate finish for corrosion resistance. This SFI flexplate is OUT OF DATE! This means that it is no longer SFI certified by expiration date! Flexplate unit, 164-tooth, Steel, Internal Balance, SFI 29.1. For: Ford; 4.6L, 5.4L, 6.8L