[Steve Grady]

SFI approved Flexplates to spec 29.1 have a 3 years from date of certification service life. Some manufactures will inspect and Recertify.



SFI approval 4.1 is for transmission shields and cases. They are one and the same for certification purposes. This is for the main case not the torque converter flexplate area. Reid, Dedenbear, ATI, BTE, Trans Specialties and JW are examples of aftermarket cases that are SFI approved and there are others. All of those if undamaged or unmodified usually can be inspected and recertified. Stock cases are not SFI approved and must use an Aftermarket Transmission shield or blanket if Required. SFI 4.1 certified parts have a 5 years from date of certification service life.



SFI approved 30.1 is for Flexplate shields and bellhousings. They are one and the same for certification purposes. This is for the area of the bellhousing that covers the Flexplate area. Reid, Dedenbear, ATI, BTE JW, Trans Specialties are examples of aftermarket bellhousings that are SFI approved and there are others. It can be part of a one piece case or separate bolt on bellhousing. Stock bellhousings are not SFI approved and must use an Aftermarket Flexplate shield if required. TCI and others make these. Most aftermaket bell housings and flexplate shields can be recertified if undamaged and unmodified. SFI 30.1 parts have a 5 years from date of certification service life


One piece cases like Reid and one piece shields like CSR will have both SFI 4.1 and SFI 30.1 both of which need to be recertified at 5 year intervals.