Sonnax 34716-01 Sealing rings input shaft oversized fits 4L80-E, 4L85-E

Fitment Type: Direct ReplacementItems Included: 2-Pack Oversized Sealing RingsManufacturer Part Number: 34716-01Country of Manufacture: United StatesMounting Hardware Included: NoVintage Part: NoBrand: SonnaxType: Input ShaftInterchange Part Number: S34178BOSKSurface Finish: Steel Springs & Rollers Only, No RetainerCountry/Region of Manufacture: United StatesUniversal Fitment: YesPerformance Part: Yes4L80-E, 4L85-E Transmission Input Shaft Oversized Seal RingsPart No. 34716-01 Package Quantity: 2 Requires: 34716-TL (Recommended) GM 4L80-E and 4L85-E forward drums are often replaced due to wear of the sealing ring bore caused by contact with the input shaft. Contact between shaft and drum occurs because of looseness/wear of the support bushings and tight clearance between shaft and drum bore. Worn drums can be salvaged by machining away the worn area, increasing the bore I.D. to .900" and installing the Sonnax oversi