GM 4L60E Overhaul Rebuild Kit 1993-2003 This Super High Quality Kit is made by Transtec This Overhaul kit includes the Sealing Rings, Metal Clad Seals, Gaskets, and Orings. All these Kits have Sealing rings made by SPX/Filtran or Stellar and Gasket Sets made by the Co. TRANSTEC.