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Tool, Sizing, For 34716-01, 4L80-E, GM

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Sizing Tool for 34716-01 Seal Rings
Price: $89.99
Part Number: TAT-34716-TL-TS
The 4L80-E forward drum is 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 ID to .900 and installing the Sonnax oversized outer diameter forward drum sealing rings 34716-01. The oversized seal diameter restores proper sealing with the larger bore, while the increased clearance reduces future wear by making clearance consistent with other applications, This fix works on all 4L80-E forward drums.

Features & Benefits

Salvages all 4L80-E forward drums with grooves worn in the ID bore.
Reduces the likelihood of future contact between forward drum ID and input shaft.

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